/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_spec2_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:16:00,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:16:00,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:16:00,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:16:00,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:16:00,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:16:00,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:16:00,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:16:00,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:16:00,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:16:00,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:16:00,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:16:00,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:16:00,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:16:00,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:16:00,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:16:00,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:16:00,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:16:00,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:16:00,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:16:00,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:16:00,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:16:00,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:16:00,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:16:00,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:16:00,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:16:00,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:16:00,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:16:00,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:16:00,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:16:00,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:16:00,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:16:00,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:16:00,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:16:00,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:16:00,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:16:00,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:16:00,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:16:00,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:16:00,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:16:00,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:16:00,890 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 06:16:00,916 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:16:00,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:16:00,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:16:00,916 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:16:00,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:16:00,917 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:16:00,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:16:00,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:16:00,917 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:16:00,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:16:00,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:16:00,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:16:00,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:16:00,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:16:00,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:16:00,918 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:16:00,918 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:16:00,918 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:16:00,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:16:00,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:16:00,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:16:00,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:16:00,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:16:00,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:16:00,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:16:00,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:16:00,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:16:00,919 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:16:00,919 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:16:00,919 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:16:00,919 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:16:00,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:16:00,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:16:00,919 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:16:01,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:16:01,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:16:01,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:16:01,102 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:16:01,103 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:16:01,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product28.cil.c [2022-01-10 06:16:01,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac1c71a2b/c51d155525bd4534b6918d787f682bcf/FLAG10f84705d [2022-01-10 06:16:01,599 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:16:01,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product28.cil.c [2022-01-10 06:16:01,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac1c71a2b/c51d155525bd4534b6918d787f682bcf/FLAG10f84705d [2022-01-10 06:16:01,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac1c71a2b/c51d155525bd4534b6918d787f682bcf [2022-01-10 06:16:01,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:16:01,645 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:16:01,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:16:01,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:16:01,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:16:01,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:16:01" (1/1) ... [2022-01-10 06:16:01,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1320fa87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:01, skipping insertion in model container [2022-01-10 06:16:01,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:16:01" (1/1) ... [2022-01-10 06:16:01,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:16:01,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:16:01,998 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_spec2_product28.cil.c[35981,35994] [2022-01-10 06:16:02,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:16:02,102 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:16:02,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:16:02,142 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_spec2_product28.cil.c[35981,35994] [2022-01-10 06:16:02,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:16:02,171 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:16:02,222 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_spec2_product28.cil.c[35981,35994] [2022-01-10 06:16:02,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:16:02,269 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:16:02,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:02 WrapperNode [2022-01-10 06:16:02,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:16:02,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:16:02,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:16:02,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:16:02,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:02" (1/1) ... [2022-01-10 06:16:02,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:02" (1/1) ... [2022-01-10 06:16:02,348 INFO L137 Inliner]: procedures = 99, calls = 348, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 1116 [2022-01-10 06:16:02,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:16:02,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:16:02,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:16:02,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:16:02,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:02" (1/1) ... [2022-01-10 06:16:02,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:02" (1/1) ... [2022-01-10 06:16:02,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:02" (1/1) ... [2022-01-10 06:16:02,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:02" (1/1) ... [2022-01-10 06:16:02,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:02" (1/1) ... [2022-01-10 06:16:02,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:02" (1/1) ... [2022-01-10 06:16:02,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:02" (1/1) ... [2022-01-10 06:16:02,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:16:02,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:16:02,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:16:02,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:16:02,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:02" (1/1) ... [2022-01-10 06:16:02,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:16:02,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:16:02,493 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 06:16:02,501 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 06:16:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-01-10 06:16:02,523 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-01-10 06:16:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-01-10 06:16:02,524 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-01-10 06:16:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-01-10 06:16:02,524 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-01-10 06:16:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-01-10 06:16:02,524 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-01-10 06:16:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-01-10 06:16:02,525 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-01-10 06:16:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-01-10 06:16:02,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-01-10 06:16:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-01-10 06:16:02,525 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-01-10 06:16:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-01-10 06:16:02,525 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-01-10 06:16:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-01-10 06:16:02,526 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-01-10 06:16:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:16:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-01-10 06:16:02,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-01-10 06:16:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-01-10 06:16:02,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-01-10 06:16:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-01-10 06:16:02,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-01-10 06:16:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-01-10 06:16:02,526 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-01-10 06:16:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-01-10 06:16:02,526 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-01-10 06:16:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-01-10 06:16:02,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-01-10 06:16:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-01-10 06:16:02,527 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-01-10 06:16:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:16:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-01-10 06:16:02,527 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-01-10 06:16:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-01-10 06:16:02,527 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-01-10 06:16:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-01-10 06:16:02,527 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-01-10 06:16:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-01-10 06:16:02,527 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-01-10 06:16:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-01-10 06:16:02,528 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-01-10 06:16:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-01-10 06:16:02,528 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-01-10 06:16:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-01-10 06:16:02,528 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-01-10 06:16:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:16:02,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:16:02,538 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-01-10 06:16:02,538 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-01-10 06:16:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-01-10 06:16:02,539 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-01-10 06:16:02,666 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:16:02,667 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:16:03,566 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:16:03,574 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:16:03,574 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:16:03,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:16:03 BoogieIcfgContainer [2022-01-10 06:16:03,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:16:03,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:16:03,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:16:03,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:16:03,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:16:01" (1/3) ... [2022-01-10 06:16:03,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1865692e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:16:03, skipping insertion in model container [2022-01-10 06:16:03,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:02" (2/3) ... [2022-01-10 06:16:03,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1865692e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:16:03, skipping insertion in model container [2022-01-10 06:16:03,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:16:03" (3/3) ... [2022-01-10 06:16:03,584 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product28.cil.c [2022-01-10 06:16:03,587 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:16:03,587 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:16:03,617 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:16:03,623 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 06:16:03,624 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:16:03,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 578 states, 452 states have (on average 1.6880530973451326) internal successors, (763), 475 states have internal predecessors, (763), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) [2022-01-10 06:16:03,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 06:16:03,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:03,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:03,652 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:03,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:03,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1274281264, now seen corresponding path program 1 times [2022-01-10 06:16:03,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:03,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056128599] [2022-01-10 06:16:03,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:03,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:03,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:03,667 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 06:16:03,690 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 06:16:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:04,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:16:04,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:04,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:04,169 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:04,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056128599] [2022-01-10 06:16:04,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056128599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:04,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:04,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:16:04,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745374468] [2022-01-10 06:16:04,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:04,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:16:04,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:04,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:16:04,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:16:04,209 INFO L87 Difference]: Start difference. First operand has 578 states, 452 states have (on average 1.6880530973451326) internal successors, (763), 475 states have internal predecessors, (763), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 06:16:04,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:04,291 INFO L93 Difference]: Finished difference Result 599 states and 991 transitions. [2022-01-10 06:16:04,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:16:04,292 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2022-01-10 06:16:04,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:04,307 INFO L225 Difference]: With dead ends: 599 [2022-01-10 06:16:04,308 INFO L226 Difference]: Without dead ends: 570 [2022-01-10 06:16:04,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 59 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 06:16:04,312 INFO L933 BasicCegarLoop]: 952 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, 952 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 06:16:04,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:04,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-01-10 06:16:04,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2022-01-10 06:16:04,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6860986547085202) internal successors, (752), 467 states have internal predecessors, (752), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-01-10 06:16:04,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 945 transitions. [2022-01-10 06:16:04,382 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 945 transitions. Word has length 60 [2022-01-10 06:16:04,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:04,383 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 945 transitions. [2022-01-10 06:16:04,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 06:16:04,383 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 945 transitions. [2022-01-10 06:16:04,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 06:16:04,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:04,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:04,399 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 06:16:04,596 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 06:16:04,597 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:04,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:04,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1482839356, now seen corresponding path program 1 times [2022-01-10 06:16:04,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:04,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898794116] [2022-01-10 06:16:04,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:04,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:04,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:04,600 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 06:16:04,601 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 06:16:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:04,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:04,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:04,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:04,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:04,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898794116] [2022-01-10 06:16:04,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898794116] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:04,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:04,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:04,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415232283] [2022-01-10 06:16:04,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:04,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:04,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:04,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:04,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:04,905 INFO L87 Difference]: Start difference. First operand 570 states and 945 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:05,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:05,053 INFO L93 Difference]: Finished difference Result 1122 states and 1866 transitions. [2022-01-10 06:16:05,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:05,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2022-01-10 06:16:05,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:05,069 INFO L225 Difference]: With dead ends: 1122 [2022-01-10 06:16:05,069 INFO L226 Difference]: Without dead ends: 570 [2022-01-10 06:16:05,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 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 06:16:05,075 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 14 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:05,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 2791 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:05,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-01-10 06:16:05,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2022-01-10 06:16:05,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6838565022421526) internal successors, (751), 467 states have internal predecessors, (751), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-01-10 06:16:05,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 944 transitions. [2022-01-10 06:16:05,124 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 944 transitions. Word has length 62 [2022-01-10 06:16:05,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:05,124 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 944 transitions. [2022-01-10 06:16:05,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:05,124 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 944 transitions. [2022-01-10 06:16:05,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 06:16:05,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:05,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:05,143 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 06:16:05,339 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 06:16:05,340 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:05,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:05,340 INFO L85 PathProgramCache]: Analyzing trace with hash -577179706, now seen corresponding path program 1 times [2022-01-10 06:16:05,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:05,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996684748] [2022-01-10 06:16:05,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:05,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:05,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:05,346 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 06:16:05,348 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 06:16:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:05,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:05,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:05,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:05,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:05,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:05,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996684748] [2022-01-10 06:16:05,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996684748] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:05,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:05,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:05,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717394189] [2022-01-10 06:16:05,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:05,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:05,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:05,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:05,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:05,669 INFO L87 Difference]: Start difference. First operand 570 states and 944 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:05,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:05,741 INFO L93 Difference]: Finished difference Result 1122 states and 1865 transitions. [2022-01-10 06:16:05,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:05,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-01-10 06:16:05,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:05,745 INFO L225 Difference]: With dead ends: 1122 [2022-01-10 06:16:05,745 INFO L226 Difference]: Without dead ends: 570 [2022-01-10 06:16:05,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 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 06:16:05,750 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 12 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:05,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2791 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:05,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-01-10 06:16:05,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2022-01-10 06:16:05,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6816143497757847) internal successors, (750), 467 states have internal predecessors, (750), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-01-10 06:16:05,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 943 transitions. [2022-01-10 06:16:05,779 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 943 transitions. Word has length 63 [2022-01-10 06:16:05,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:05,780 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 943 transitions. [2022-01-10 06:16:05,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:05,780 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 943 transitions. [2022-01-10 06:16:05,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 06:16:05,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:05,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:05,812 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 06:16:05,997 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 06:16:05,998 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:05,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:05,999 INFO L85 PathProgramCache]: Analyzing trace with hash 766305152, now seen corresponding path program 1 times [2022-01-10 06:16:05,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:05,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344750328] [2022-01-10 06:16:05,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:05,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:06,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:06,001 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 06:16:06,002 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 06:16:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:06,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:06,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:06,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:06,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:06,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344750328] [2022-01-10 06:16:06,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344750328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:06,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:06,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:06,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139307357] [2022-01-10 06:16:06,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:06,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:06,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:06,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:06,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:06,435 INFO L87 Difference]: Start difference. First operand 570 states and 943 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:06,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:06,482 INFO L93 Difference]: Finished difference Result 1122 states and 1864 transitions. [2022-01-10 06:16:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:06,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-01-10 06:16:06,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:06,487 INFO L225 Difference]: With dead ends: 1122 [2022-01-10 06:16:06,487 INFO L226 Difference]: Without dead ends: 570 [2022-01-10 06:16:06,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 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 06:16:06,490 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 10 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:06,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2791 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:06,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-01-10 06:16:06,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2022-01-10 06:16:06,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6793721973094171) internal successors, (749), 467 states have internal predecessors, (749), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-01-10 06:16:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 942 transitions. [2022-01-10 06:16:06,509 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 942 transitions. Word has length 64 [2022-01-10 06:16:06,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:06,509 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 942 transitions. [2022-01-10 06:16:06,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:06,509 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 942 transitions. [2022-01-10 06:16:06,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 06:16:06,510 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:06,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:06,530 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 06:16:06,721 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 06:16:06,721 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:06,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:06,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1497497726, now seen corresponding path program 1 times [2022-01-10 06:16:06,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:06,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791063516] [2022-01-10 06:16:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:06,722 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:06,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:06,724 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 06:16:06,756 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 06:16:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:06,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:06,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:06,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:07,000 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:07,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791063516] [2022-01-10 06:16:07,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791063516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:07,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:07,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:07,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297925971] [2022-01-10 06:16:07,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:07,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:07,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:07,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:07,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:07,001 INFO L87 Difference]: Start difference. First operand 570 states and 942 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:07,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:07,034 INFO L93 Difference]: Finished difference Result 1122 states and 1863 transitions. [2022-01-10 06:16:07,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:07,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 06:16:07,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:07,038 INFO L225 Difference]: With dead ends: 1122 [2022-01-10 06:16:07,038 INFO L226 Difference]: Without dead ends: 570 [2022-01-10 06:16:07,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 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 06:16:07,042 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 8 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:07,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 2791 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:07,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-01-10 06:16:07,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2022-01-10 06:16:07,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6771300448430493) internal successors, (748), 467 states have internal predecessors, (748), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-01-10 06:16:07,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 941 transitions. [2022-01-10 06:16:07,061 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 941 transitions. Word has length 65 [2022-01-10 06:16:07,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:07,062 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 941 transitions. [2022-01-10 06:16:07,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:07,062 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 941 transitions. [2022-01-10 06:16:07,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 06:16:07,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:07,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:07,076 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 06:16:07,274 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 06:16:07,274 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:07,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:07,275 INFO L85 PathProgramCache]: Analyzing trace with hash 376896572, now seen corresponding path program 1 times [2022-01-10 06:16:07,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:07,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832285846] [2022-01-10 06:16:07,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:07,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:07,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:07,277 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 06:16:07,278 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 06:16:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:07,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:07,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:07,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:07,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:07,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832285846] [2022-01-10 06:16:07,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832285846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:07,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:07,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:07,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025395613] [2022-01-10 06:16:07,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:07,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:07,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:07,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:07,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:07,602 INFO L87 Difference]: Start difference. First operand 570 states and 941 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:07,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:07,658 INFO L93 Difference]: Finished difference Result 1122 states and 1862 transitions. [2022-01-10 06:16:07,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:07,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-01-10 06:16:07,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:07,662 INFO L225 Difference]: With dead ends: 1122 [2022-01-10 06:16:07,662 INFO L226 Difference]: Without dead ends: 570 [2022-01-10 06:16:07,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 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 06:16:07,666 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 6 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:07,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 2791 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:07,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-01-10 06:16:07,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2022-01-10 06:16:07,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6748878923766817) internal successors, (747), 467 states have internal predecessors, (747), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-01-10 06:16:07,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 940 transitions. [2022-01-10 06:16:07,684 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 940 transitions. Word has length 66 [2022-01-10 06:16:07,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:07,686 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 940 transitions. [2022-01-10 06:16:07,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:07,686 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 940 transitions. [2022-01-10 06:16:07,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 06:16:07,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:07,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:07,719 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 06:16:07,897 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 06:16:07,898 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:07,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:07,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1686384446, now seen corresponding path program 1 times [2022-01-10 06:16:07,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:07,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483751742] [2022-01-10 06:16:07,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:07,899 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:07,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:07,920 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 06:16:07,936 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 06:16:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:08,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:16:08,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:08,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:08,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:08,243 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:08,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483751742] [2022-01-10 06:16:08,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483751742] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:08,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:08,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:16:08,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996550095] [2022-01-10 06:16:08,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:08,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:16:08,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:08,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:16:08,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:16:08,244 INFO L87 Difference]: Start difference. First operand 570 states and 940 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 06:16:08,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:08,359 INFO L93 Difference]: Finished difference Result 1088 states and 1794 transitions. [2022-01-10 06:16:08,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:16:08,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2022-01-10 06:16:08,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:08,363 INFO L225 Difference]: With dead ends: 1088 [2022-01-10 06:16:08,363 INFO L226 Difference]: Without dead ends: 585 [2022-01-10 06:16:08,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 06:16:08,366 INFO L933 BasicCegarLoop]: 929 mSDtfsCounter, 117 mSDsluCounter, 4553 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 5482 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:08,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 5482 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:16:08,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-01-10 06:16:08,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 583. [2022-01-10 06:16:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 456 states have (on average 1.6710526315789473) internal successors, (762), 479 states have internal predecessors, (762), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-01-10 06:16:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 959 transitions. [2022-01-10 06:16:08,380 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 959 transitions. Word has length 67 [2022-01-10 06:16:08,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:08,380 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 959 transitions. [2022-01-10 06:16:08,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 06:16:08,381 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 959 transitions. [2022-01-10 06:16:08,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 06:16:08,381 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:08,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:08,395 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 06:16:08,592 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 06:16:08,593 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:08,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:08,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1445844317, now seen corresponding path program 1 times [2022-01-10 06:16:08,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:08,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134412676] [2022-01-10 06:16:08,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:08,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:08,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:08,595 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 06:16:08,596 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 06:16:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:08,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:08,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:08,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:08,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:08,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:08,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134412676] [2022-01-10 06:16:08,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134412676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:08,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:08,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:08,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240651003] [2022-01-10 06:16:08,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:08,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:08,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:08,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:08,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:08,919 INFO L87 Difference]: Start difference. First operand 583 states and 959 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:08,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:08,951 INFO L93 Difference]: Finished difference Result 1140 states and 1888 transitions. [2022-01-10 06:16:08,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:08,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-01-10 06:16:08,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:08,954 INFO L225 Difference]: With dead ends: 1140 [2022-01-10 06:16:08,954 INFO L226 Difference]: Without dead ends: 564 [2022-01-10 06:16:08,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 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 06:16:08,957 INFO L933 BasicCegarLoop]: 933 mSDtfsCounter, 3 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:08,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2792 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:08,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-01-10 06:16:08,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2022-01-10 06:16:08,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 440 states have (on average 1.665909090909091) internal successors, (733), 461 states have internal predecessors, (733), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-01-10 06:16:08,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 926 transitions. [2022-01-10 06:16:08,969 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 926 transitions. Word has length 67 [2022-01-10 06:16:08,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:08,969 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 926 transitions. [2022-01-10 06:16:08,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 926 transitions. [2022-01-10 06:16:08,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 06:16:08,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:08,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:08,983 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 06:16:09,181 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 06:16:09,181 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:09,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:09,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1638465115, now seen corresponding path program 1 times [2022-01-10 06:16:09,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:09,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446705035] [2022-01-10 06:16:09,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:09,182 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:09,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:09,183 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 06:16:09,185 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 06:16:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:09,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:09,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:09,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:09,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:09,540 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:09,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446705035] [2022-01-10 06:16:09,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446705035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:09,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:09,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:09,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616636899] [2022-01-10 06:16:09,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:09,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:09,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:09,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:09,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:09,542 INFO L87 Difference]: Start difference. First operand 564 states and 926 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:09,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:09,654 INFO L93 Difference]: Finished difference Result 1076 states and 1772 transitions. [2022-01-10 06:16:09,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:09,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-01-10 06:16:09,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:09,659 INFO L225 Difference]: With dead ends: 1076 [2022-01-10 06:16:09,667 INFO L226 Difference]: Without dead ends: 564 [2022-01-10 06:16:09,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 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 06:16:09,671 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 90 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:09,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 2605 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:16:09,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-01-10 06:16:09,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2022-01-10 06:16:09,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 440 states have (on average 1.6568181818181817) internal successors, (729), 461 states have internal predecessors, (729), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-01-10 06:16:09,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 922 transitions. [2022-01-10 06:16:09,688 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 922 transitions. Word has length 68 [2022-01-10 06:16:09,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:09,689 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 922 transitions. [2022-01-10 06:16:09,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:09,689 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 922 transitions. [2022-01-10 06:16:09,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 06:16:09,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:09,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:09,707 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 06:16:09,904 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 06:16:09,905 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:09,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:09,905 INFO L85 PathProgramCache]: Analyzing trace with hash -99915903, now seen corresponding path program 1 times [2022-01-10 06:16:09,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:09,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450734673] [2022-01-10 06:16:09,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:09,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:09,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:09,907 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 06:16:09,909 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 06:16:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:10,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:10,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:10,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:10,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:10,293 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:10,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450734673] [2022-01-10 06:16:10,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450734673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:10,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:10,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:10,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310932462] [2022-01-10 06:16:10,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:10,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:10,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:10,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:10,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:10,295 INFO L87 Difference]: Start difference. First operand 564 states and 922 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:10,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:10,400 INFO L93 Difference]: Finished difference Result 1076 states and 1768 transitions. [2022-01-10 06:16:10,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:10,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-01-10 06:16:10,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:10,403 INFO L225 Difference]: With dead ends: 1076 [2022-01-10 06:16:10,403 INFO L226 Difference]: Without dead ends: 564 [2022-01-10 06:16:10,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 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 06:16:10,406 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 85 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:10,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 2605 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:16:10,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-01-10 06:16:10,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2022-01-10 06:16:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 440 states have (on average 1.6477272727272727) internal successors, (725), 461 states have internal predecessors, (725), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-01-10 06:16:10,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 918 transitions. [2022-01-10 06:16:10,421 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 918 transitions. Word has length 69 [2022-01-10 06:16:10,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:10,421 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 918 transitions. [2022-01-10 06:16:10,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:10,421 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 918 transitions. [2022-01-10 06:16:10,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 06:16:10,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:10,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:10,445 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 06:16:10,633 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 06:16:10,633 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:10,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:10,634 INFO L85 PathProgramCache]: Analyzing trace with hash -398635808, now seen corresponding path program 1 times [2022-01-10 06:16:10,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:10,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798543267] [2022-01-10 06:16:10,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:10,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:10,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:10,635 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 06:16:10,670 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 06:16:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:10,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:10,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:10,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:10,973 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:10,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798543267] [2022-01-10 06:16:10,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798543267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:10,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:10,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:10,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50308954] [2022-01-10 06:16:10,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:10,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:10,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:10,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:10,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:10,975 INFO L87 Difference]: Start difference. First operand 564 states and 918 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:11,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:11,061 INFO L93 Difference]: Finished difference Result 1076 states and 1764 transitions. [2022-01-10 06:16:11,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:11,061 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-01-10 06:16:11,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:11,066 INFO L225 Difference]: With dead ends: 1076 [2022-01-10 06:16:11,066 INFO L226 Difference]: Without dead ends: 564 [2022-01-10 06:16:11,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 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 06:16:11,069 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 80 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:11,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 2605 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:16:11,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-01-10 06:16:11,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2022-01-10 06:16:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 440 states have (on average 1.6386363636363637) internal successors, (721), 461 states have internal predecessors, (721), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-01-10 06:16:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 914 transitions. [2022-01-10 06:16:11,085 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 914 transitions. Word has length 70 [2022-01-10 06:16:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:11,086 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 914 transitions. [2022-01-10 06:16:11,086 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:11,086 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 914 transitions. [2022-01-10 06:16:11,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 06:16:11,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:11,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:11,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:11,298 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 06:16:11,298 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:11,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:11,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1867098464, now seen corresponding path program 1 times [2022-01-10 06:16:11,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:11,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255346657] [2022-01-10 06:16:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:11,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:11,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:11,303 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 06:16:11,304 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 06:16:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:11,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:16:11,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:11,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:11,635 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:11,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255346657] [2022-01-10 06:16:11,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255346657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:11,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:11,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:16:11,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722006622] [2022-01-10 06:16:11,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:11,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:16:11,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:11,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:16:11,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:16:11,636 INFO L87 Difference]: Start difference. First operand 564 states and 914 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 06:16:11,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:11,698 INFO L93 Difference]: Finished difference Result 1076 states and 1760 transitions. [2022-01-10 06:16:11,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:16:11,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2022-01-10 06:16:11,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:11,702 INFO L225 Difference]: With dead ends: 1076 [2022-01-10 06:16:11,702 INFO L226 Difference]: Without dead ends: 543 [2022-01-10 06:16:11,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 64 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 06:16:11,704 INFO L933 BasicCegarLoop]: 902 mSDtfsCounter, 110 mSDsluCounter, 4426 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 5328 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:11,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 5328 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:11,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-01-10 06:16:11,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2022-01-10 06:16:11,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 419 states have (on average 1.639618138424821) internal successors, (687), 440 states have internal predecessors, (687), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-01-10 06:16:11,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 880 transitions. [2022-01-10 06:16:11,716 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 880 transitions. Word has length 70 [2022-01-10 06:16:11,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:11,716 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 880 transitions. [2022-01-10 06:16:11,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 06:16:11,716 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 880 transitions. [2022-01-10 06:16:11,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 06:16:11,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:11,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:11,739 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 06:16:11,927 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 06:16:11,928 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:11,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:11,928 INFO L85 PathProgramCache]: Analyzing trace with hash 982465830, now seen corresponding path program 1 times [2022-01-10 06:16:11,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:11,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660958671] [2022-01-10 06:16:11,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:11,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:11,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:11,930 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 06:16:11,932 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 06:16:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:12,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:12,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:12,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:12,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:12,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660958671] [2022-01-10 06:16:12,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660958671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:12,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:12,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:12,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892655329] [2022-01-10 06:16:12,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:12,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:12,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:12,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:12,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:12,302 INFO L87 Difference]: Start difference. First operand 543 states and 880 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:12,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:12,392 INFO L93 Difference]: Finished difference Result 1055 states and 1726 transitions. [2022-01-10 06:16:12,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:12,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-01-10 06:16:12,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:12,396 INFO L225 Difference]: With dead ends: 1055 [2022-01-10 06:16:12,396 INFO L226 Difference]: Without dead ends: 543 [2022-01-10 06:16:12,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 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 06:16:12,398 INFO L933 BasicCegarLoop]: 870 mSDtfsCounter, 41 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:12,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 2591 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:12,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-01-10 06:16:12,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2022-01-10 06:16:12,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 419 states have (on average 1.6372315035799523) internal successors, (686), 440 states have internal predecessors, (686), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-01-10 06:16:12,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 879 transitions. [2022-01-10 06:16:12,410 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 879 transitions. Word has length 71 [2022-01-10 06:16:12,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:12,411 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 879 transitions. [2022-01-10 06:16:12,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:12,411 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 879 transitions. [2022-01-10 06:16:12,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 06:16:12,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:12,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:12,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-01-10 06:16:12,622 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 06:16:12,623 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:12,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:12,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1396539547, now seen corresponding path program 1 times [2022-01-10 06:16:12,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:12,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054203250] [2022-01-10 06:16:12,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:12,623 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:12,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:12,624 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 06:16:12,626 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 06:16:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:12,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:12,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:12,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:12,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:12,925 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:12,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054203250] [2022-01-10 06:16:12,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054203250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:12,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:12,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:12,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117144765] [2022-01-10 06:16:12,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:12,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:12,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:12,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:12,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:12,926 INFO L87 Difference]: Start difference. First operand 543 states and 879 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:12,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:12,961 INFO L93 Difference]: Finished difference Result 1055 states and 1725 transitions. [2022-01-10 06:16:12,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:12,962 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-01-10 06:16:12,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:12,965 INFO L225 Difference]: With dead ends: 1055 [2022-01-10 06:16:12,965 INFO L226 Difference]: Without dead ends: 543 [2022-01-10 06:16:12,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 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 06:16:12,967 INFO L933 BasicCegarLoop]: 870 mSDtfsCounter, 39 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:12,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 2591 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:12,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-01-10 06:16:12,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2022-01-10 06:16:12,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 419 states have (on average 1.6348448687350836) internal successors, (685), 440 states have internal predecessors, (685), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-01-10 06:16:12,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 878 transitions. [2022-01-10 06:16:12,978 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 878 transitions. Word has length 72 [2022-01-10 06:16:12,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:12,978 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 878 transitions. [2022-01-10 06:16:12,978 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:16:12,978 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 878 transitions. [2022-01-10 06:16:12,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 06:16:12,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:12,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:12,993 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 06:16:13,189 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 06:16:13,190 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:13,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:13,190 INFO L85 PathProgramCache]: Analyzing trace with hash -79778101, now seen corresponding path program 1 times [2022-01-10 06:16:13,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:13,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994381683] [2022-01-10 06:16:13,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:13,191 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:13,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:13,192 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 06:16:13,193 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 06:16:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:13,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:16:13,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:13,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:13,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:13,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:13,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994381683] [2022-01-10 06:16:13,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994381683] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:13,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:13,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:16:13,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809162016] [2022-01-10 06:16:13,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:13,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:16:13,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:13,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:16:13,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:16:13,546 INFO L87 Difference]: Start difference. First operand 543 states and 878 transitions. Second operand has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 06:16:13,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:13,627 INFO L93 Difference]: Finished difference Result 1049 states and 1713 transitions. [2022-01-10 06:16:13,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:16:13,635 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2022-01-10 06:16:13,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:13,638 INFO L225 Difference]: With dead ends: 1049 [2022-01-10 06:16:13,638 INFO L226 Difference]: Without dead ends: 543 [2022-01-10 06:16:13,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 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 06:16:13,642 INFO L933 BasicCegarLoop]: 863 mSDtfsCounter, 31 mSDsluCounter, 5156 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 6019 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:13,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 6019 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:16:13,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-01-10 06:16:13,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2022-01-10 06:16:13,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 419 states have (on average 1.6324582338902147) internal successors, (684), 440 states have internal predecessors, (684), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-01-10 06:16:13,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 877 transitions. [2022-01-10 06:16:13,654 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 877 transitions. Word has length 73 [2022-01-10 06:16:13,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:13,654 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 877 transitions. [2022-01-10 06:16:13,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 06:16:13,654 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 877 transitions. [2022-01-10 06:16:13,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 06:16:13,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:13,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:13,670 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 06:16:13,867 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 06:16:13,867 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:13,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:13,868 INFO L85 PathProgramCache]: Analyzing trace with hash -688964934, now seen corresponding path program 1 times [2022-01-10 06:16:13,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:13,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707853490] [2022-01-10 06:16:13,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:13,868 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:13,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:13,869 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 06:16:13,871 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 06:16:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:14,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:16:14,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:14,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:14,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:14,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:14,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707853490] [2022-01-10 06:16:14,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707853490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:14,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:14,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:16:14,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390437487] [2022-01-10 06:16:14,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:14,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:16:14,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:14,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:16:14,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:16:14,715 INFO L87 Difference]: Start difference. First operand 543 states and 877 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 06:16:18,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:18,354 INFO L93 Difference]: Finished difference Result 2124 states and 3525 transitions. [2022-01-10 06:16:18,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:16:18,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 74 [2022-01-10 06:16:18,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:18,362 INFO L225 Difference]: With dead ends: 2124 [2022-01-10 06:16:18,362 INFO L226 Difference]: Without dead ends: 1626 [2022-01-10 06:16:18,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 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 06:16:18,364 INFO L933 BasicCegarLoop]: 1553 mSDtfsCounter, 2781 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 3135 mSolverCounterSat, 615 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2964 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 3750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 615 IncrementalHoareTripleChecker+Valid, 3135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:18,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2964 Valid, 2687 Invalid, 3750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [615 Valid, 3135 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-01-10 06:16:18,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2022-01-10 06:16:18,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1427. [2022-01-10 06:16:18,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1114 states have (on average 1.6651705565529622) internal successors, (1855), 1153 states have internal predecessors, (1855), 254 states have call successors, (254), 57 states have call predecessors, (254), 58 states have return successors, (259), 231 states have call predecessors, (259), 249 states have call successors, (259) [2022-01-10 06:16:18,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 2368 transitions. [2022-01-10 06:16:18,411 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 2368 transitions. Word has length 74 [2022-01-10 06:16:18,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:18,411 INFO L470 AbstractCegarLoop]: Abstraction has 1427 states and 2368 transitions. [2022-01-10 06:16:18,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 06:16:18,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 2368 transitions. [2022-01-10 06:16:18,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:16:18,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:18,415 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, 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 06:16:18,425 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 06:16:18,625 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 06:16:18,625 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:18,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:18,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2061681991, now seen corresponding path program 1 times [2022-01-10 06:16:18,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:18,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214962536] [2022-01-10 06:16:18,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:18,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:18,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:18,627 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 06:16:18,628 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 06:16:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:18,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:16:18,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:19,089 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 06:16:19,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:19,090 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:19,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214962536] [2022-01-10 06:16:19,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214962536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:19,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:19,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:19,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137822751] [2022-01-10 06:16:19,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:19,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:16:19,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:19,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:16:19,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:16:19,091 INFO L87 Difference]: Start difference. First operand 1427 states and 2368 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 06:16:19,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:19,520 INFO L93 Difference]: Finished difference Result 2821 states and 4777 transitions. [2022-01-10 06:16:19,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:16:19,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2022-01-10 06:16:19,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:19,534 INFO L225 Difference]: With dead ends: 2821 [2022-01-10 06:16:19,534 INFO L226 Difference]: Without dead ends: 1439 [2022-01-10 06:16:19,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 06:16:19,540 INFO L933 BasicCegarLoop]: 847 mSDtfsCounter, 819 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:19,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 2184 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:16:19,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2022-01-10 06:16:19,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1439. [2022-01-10 06:16:19,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1123 states have (on average 1.6598397150489759) internal successors, (1864), 1162 states have internal predecessors, (1864), 254 states have call successors, (254), 60 states have call predecessors, (254), 61 states have return successors, (262), 231 states have call predecessors, (262), 249 states have call successors, (262) [2022-01-10 06:16:19,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 2380 transitions. [2022-01-10 06:16:19,583 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 2380 transitions. Word has length 127 [2022-01-10 06:16:19,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:19,583 INFO L470 AbstractCegarLoop]: Abstraction has 1439 states and 2380 transitions. [2022-01-10 06:16:19,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 06:16:19,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 2380 transitions. [2022-01-10 06:16:19,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 06:16:19,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:19,586 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, 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 06:16:19,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-01-10 06:16:19,812 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 06:16:19,812 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:19,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:19,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2041046293, now seen corresponding path program 1 times [2022-01-10 06:16:19,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:19,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365539853] [2022-01-10 06:16:19,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:19,813 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:19,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:19,814 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 06:16:19,822 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 06:16:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:20,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:16:20,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 06:16:20,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:20,326 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:20,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365539853] [2022-01-10 06:16:20,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365539853] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:20,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:20,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:20,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576385916] [2022-01-10 06:16:20,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:20,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:16:20,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:20,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:16:20,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:16:20,328 INFO L87 Difference]: Start difference. First operand 1439 states and 2380 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 06:16:20,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:20,853 INFO L93 Difference]: Finished difference Result 2848 states and 4798 transitions. [2022-01-10 06:16:20,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:16:20,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 129 [2022-01-10 06:16:20,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:20,865 INFO L225 Difference]: With dead ends: 2848 [2022-01-10 06:16:20,865 INFO L226 Difference]: Without dead ends: 1454 [2022-01-10 06:16:20,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 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 06:16:20,873 INFO L933 BasicCegarLoop]: 848 mSDtfsCounter, 817 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:20,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [834 Valid, 2185 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:16:20,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2022-01-10 06:16:20,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1454. [2022-01-10 06:16:20,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1135 states have (on average 1.652863436123348) internal successors, (1876), 1174 states have internal predecessors, (1876), 254 states have call successors, (254), 63 states have call predecessors, (254), 64 states have return successors, (265), 231 states have call predecessors, (265), 249 states have call successors, (265) [2022-01-10 06:16:20,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 2395 transitions. [2022-01-10 06:16:20,912 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 2395 transitions. Word has length 129 [2022-01-10 06:16:20,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:20,912 INFO L470 AbstractCegarLoop]: Abstraction has 1454 states and 2395 transitions. [2022-01-10 06:16:20,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 06:16:20,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 2395 transitions. [2022-01-10 06:16:20,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 06:16:20,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:20,915 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, 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 06:16:20,927 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 06:16:21,126 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 06:16:21,126 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash 677248839, now seen corresponding path program 1 times [2022-01-10 06:16:21,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:21,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752469371] [2022-01-10 06:16:21,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:21,127 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:21,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:21,129 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 06:16:21,133 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 06:16:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:21,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:16:21,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:21,656 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 06:16:21,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:21,657 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:21,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752469371] [2022-01-10 06:16:21,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752469371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:21,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:21,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:21,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83777006] [2022-01-10 06:16:21,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:21,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:16:21,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:21,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:16:21,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:16:21,659 INFO L87 Difference]: Start difference. First operand 1454 states and 2395 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 06:16:22,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:22,202 INFO L93 Difference]: Finished difference Result 2881 states and 4825 transitions. [2022-01-10 06:16:22,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:16:22,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2022-01-10 06:16:22,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:22,210 INFO L225 Difference]: With dead ends: 2881 [2022-01-10 06:16:22,210 INFO L226 Difference]: Without dead ends: 1472 [2022-01-10 06:16:22,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 06:16:22,216 INFO L933 BasicCegarLoop]: 848 mSDtfsCounter, 817 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:22,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [834 Valid, 2185 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:16:22,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2022-01-10 06:16:22,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1472. [2022-01-10 06:16:22,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1150 states have (on average 1.6443478260869566) internal successors, (1891), 1189 states have internal predecessors, (1891), 254 states have call successors, (254), 66 states have call predecessors, (254), 67 states have return successors, (268), 231 states have call predecessors, (268), 249 states have call successors, (268) [2022-01-10 06:16:22,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2413 transitions. [2022-01-10 06:16:22,279 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2413 transitions. Word has length 131 [2022-01-10 06:16:22,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:22,280 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 2413 transitions. [2022-01-10 06:16:22,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 06:16:22,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2413 transitions. [2022-01-10 06:16:22,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 06:16:22,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:22,282 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, 1, 1, 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 06:16:22,303 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 06:16:22,494 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 06:16:22,494 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:22,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:22,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1165257971, now seen corresponding path program 1 times [2022-01-10 06:16:22,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:22,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173523772] [2022-01-10 06:16:22,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:22,495 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:22,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:22,504 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 06:16:22,505 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 06:16:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:22,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:16:22,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:22,994 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 06:16:22,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:22,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:22,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173523772] [2022-01-10 06:16:22,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173523772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:22,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:22,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:22,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721894148] [2022-01-10 06:16:22,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:22,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:16:22,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:22,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:16:22,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:16:22,996 INFO L87 Difference]: Start difference. First operand 1472 states and 2413 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 06:16:23,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:23,435 INFO L93 Difference]: Finished difference Result 2920 states and 4858 transitions. [2022-01-10 06:16:23,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:16:23,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2022-01-10 06:16:23,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:23,451 INFO L225 Difference]: With dead ends: 2920 [2022-01-10 06:16:23,451 INFO L226 Difference]: Without dead ends: 1493 [2022-01-10 06:16:23,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 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 06:16:23,458 INFO L933 BasicCegarLoop]: 848 mSDtfsCounter, 817 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:23,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [834 Valid, 2185 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:16:23,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2022-01-10 06:16:23,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1493. [2022-01-10 06:16:23,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1168 states have (on average 1.634417808219178) internal successors, (1909), 1207 states have internal predecessors, (1909), 254 states have call successors, (254), 69 states have call predecessors, (254), 70 states have return successors, (271), 231 states have call predecessors, (271), 249 states have call successors, (271) [2022-01-10 06:16:23,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2434 transitions. [2022-01-10 06:16:23,511 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2434 transitions. Word has length 133 [2022-01-10 06:16:23,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:23,512 INFO L470 AbstractCegarLoop]: Abstraction has 1493 states and 2434 transitions. [2022-01-10 06:16:23,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 06:16:23,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2434 transitions. [2022-01-10 06:16:23,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 06:16:23,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:23,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:23,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-01-10 06:16:23,728 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 06:16:23,729 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:23,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:23,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1462667079, now seen corresponding path program 1 times [2022-01-10 06:16:23,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:23,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276400417] [2022-01-10 06:16:23,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:23,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:23,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:23,731 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 06:16:23,732 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 06:16:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:24,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 06:16:24,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:16:24,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:16:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-10 06:16:25,123 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:25,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276400417] [2022-01-10 06:16:25,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276400417] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:16:25,123 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:16:25,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2022-01-10 06:16:25,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544241966] [2022-01-10 06:16:25,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:16:25,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 06:16:25,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:25,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 06:16:25,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-01-10 06:16:25,125 INFO L87 Difference]: Start difference. First operand 1493 states and 2434 transitions. Second operand has 18 states, 18 states have (on average 9.5) internal successors, (171), 14 states have internal predecessors, (171), 8 states have call successors, (29), 5 states have call predecessors, (29), 10 states have return successors, (30), 12 states have call predecessors, (30), 7 states have call successors, (30) [2022-01-10 06:16:32,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:32,915 INFO L93 Difference]: Finished difference Result 5063 states and 8434 transitions. [2022-01-10 06:16:32,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 06:16:32,927 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.5) internal successors, (171), 14 states have internal predecessors, (171), 8 states have call successors, (29), 5 states have call predecessors, (29), 10 states have return successors, (30), 12 states have call predecessors, (30), 7 states have call successors, (30) Word has length 135 [2022-01-10 06:16:32,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:32,970 INFO L225 Difference]: With dead ends: 5063 [2022-01-10 06:16:32,970 INFO L226 Difference]: Without dead ends: 3615 [2022-01-10 06:16:32,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 254 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 06:16:32,977 INFO L933 BasicCegarLoop]: 1740 mSDtfsCounter, 7927 mSDsluCounter, 5080 mSDsCounter, 0 mSdLazyCounter, 9534 mSolverCounterSat, 3086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8006 SdHoareTripleChecker+Valid, 6820 SdHoareTripleChecker+Invalid, 12620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3086 IncrementalHoareTripleChecker+Valid, 9534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:32,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8006 Valid, 6820 Invalid, 12620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3086 Valid, 9534 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-01-10 06:16:32,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2022-01-10 06:16:33,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 3269. [2022-01-10 06:16:33,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3269 states, 2529 states have (on average 1.6291024120205615) internal successors, (4120), 2610 states have internal predecessors, (4120), 580 states have call successors, (580), 134 states have call predecessors, (580), 159 states have return successors, (689), 559 states have call predecessors, (689), 575 states have call successors, (689) [2022-01-10 06:16:33,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 5389 transitions. [2022-01-10 06:16:33,073 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 5389 transitions. Word has length 135 [2022-01-10 06:16:33,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:33,073 INFO L470 AbstractCegarLoop]: Abstraction has 3269 states and 5389 transitions. [2022-01-10 06:16:33,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.5) internal successors, (171), 14 states have internal predecessors, (171), 8 states have call successors, (29), 5 states have call predecessors, (29), 10 states have return successors, (30), 12 states have call predecessors, (30), 7 states have call successors, (30) [2022-01-10 06:16:33,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 5389 transitions. [2022-01-10 06:16:33,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 06:16:33,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:33,078 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, 1, 1, 1, 1, 1, 1, 1, 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 06:16:33,105 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 06:16:33,289 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 06:16:33,289 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:33,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:33,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1768616661, now seen corresponding path program 1 times [2022-01-10 06:16:33,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:33,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770094547] [2022-01-10 06:16:33,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:33,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:33,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:33,291 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 06:16:33,292 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 06:16:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:33,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:16:33,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:33,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 06:16:33,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:33,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:33,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770094547] [2022-01-10 06:16:33,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770094547] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:33,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:33,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:16:33,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110494132] [2022-01-10 06:16:33,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:33,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:16:33,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:33,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:16:33,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:16:33,749 INFO L87 Difference]: Start difference. First operand 3269 states and 5389 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:16:33,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:33,836 INFO L93 Difference]: Finished difference Result 4710 states and 7754 transitions. [2022-01-10 06:16:33,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:16:33,838 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 138 [2022-01-10 06:16:33,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:33,845 INFO L225 Difference]: With dead ends: 4710 [2022-01-10 06:16:33,845 INFO L226 Difference]: Without dead ends: 1475 [2022-01-10 06:16:33,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 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 06:16:33,855 INFO L933 BasicCegarLoop]: 856 mSDtfsCounter, 27 mSDsluCounter, 5108 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 5964 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:33,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 5964 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:33,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2022-01-10 06:16:33,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1475. [2022-01-10 06:16:33,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1156 states have (on average 1.6323529411764706) internal successors, (1887), 1195 states have internal predecessors, (1887), 248 states have call successors, (248), 69 states have call predecessors, (248), 70 states have return successors, (265), 225 states have call predecessors, (265), 243 states have call successors, (265) [2022-01-10 06:16:33,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 2400 transitions. [2022-01-10 06:16:33,912 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 2400 transitions. Word has length 138 [2022-01-10 06:16:33,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:33,912 INFO L470 AbstractCegarLoop]: Abstraction has 1475 states and 2400 transitions. [2022-01-10 06:16:33,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:16:33,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 2400 transitions. [2022-01-10 06:16:33,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-10 06:16:33,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:33,915 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-10 06:16:33,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:34,127 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 06:16:34,127 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:34,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:34,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1251842829, now seen corresponding path program 1 times [2022-01-10 06:16:34,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:34,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393757301] [2022-01-10 06:16:34,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:34,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:34,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:34,144 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 06:16:34,181 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 06:16:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:34,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 06:16:34,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:34,719 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 06:16:34,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:16:35,277 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:16:35,277 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:35,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393757301] [2022-01-10 06:16:35,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393757301] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:16:35,277 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:16:35,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-01-10 06:16:35,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511771678] [2022-01-10 06:16:35,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:16:35,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 06:16:35,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:35,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 06:16:35,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-01-10 06:16:35,279 INFO L87 Difference]: Start difference. First operand 1475 states and 2400 transitions. Second operand has 14 states, 14 states have (on average 12.214285714285714) internal successors, (171), 12 states have internal predecessors, (171), 8 states have call successors, (30), 5 states have call predecessors, (30), 8 states have return successors, (30), 10 states have call predecessors, (30), 7 states have call successors, (30) [2022-01-10 06:16:37,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:37,595 INFO L93 Difference]: Finished difference Result 2926 states and 4809 transitions. [2022-01-10 06:16:37,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:16:37,596 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.214285714285714) internal successors, (171), 12 states have internal predecessors, (171), 8 states have call successors, (30), 5 states have call predecessors, (30), 8 states have return successors, (30), 10 states have call predecessors, (30), 7 states have call successors, (30) Word has length 141 [2022-01-10 06:16:37,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:37,601 INFO L225 Difference]: With dead ends: 2926 [2022-01-10 06:16:37,601 INFO L226 Difference]: Without dead ends: 1493 [2022-01-10 06:16:37,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 270 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 06:16:37,604 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 1967 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 4676 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 5231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 4676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:37,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1967 Valid, 3097 Invalid, 5231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 4676 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 06:16:37,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2022-01-10 06:16:37,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1487. [2022-01-10 06:16:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1165 states have (on average 1.6274678111587983) internal successors, (1896), 1204 states have internal predecessors, (1896), 248 states have call successors, (248), 69 states have call predecessors, (248), 73 states have return successors, (280), 228 states have call predecessors, (280), 243 states have call successors, (280) [2022-01-10 06:16:37,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2424 transitions. [2022-01-10 06:16:37,667 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2424 transitions. Word has length 141 [2022-01-10 06:16:37,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:37,667 INFO L470 AbstractCegarLoop]: Abstraction has 1487 states and 2424 transitions. [2022-01-10 06:16:37,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.214285714285714) internal successors, (171), 12 states have internal predecessors, (171), 8 states have call successors, (30), 5 states have call predecessors, (30), 8 states have return successors, (30), 10 states have call predecessors, (30), 7 states have call successors, (30) [2022-01-10 06:16:37,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2424 transitions. [2022-01-10 06:16:37,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 06:16:37,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:37,671 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-10 06:16:37,691 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 06:16:37,889 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 06:16:37,889 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:37,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:37,889 INFO L85 PathProgramCache]: Analyzing trace with hash 280376982, now seen corresponding path program 1 times [2022-01-10 06:16:37,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:37,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926538874] [2022-01-10 06:16:37,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:37,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:37,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:37,891 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 06:16:37,893 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 06:16:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:38,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:16:38,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:38,496 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 06:16:38,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:16:39,132 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 06:16:39,133 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:39,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926538874] [2022-01-10 06:16:39,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926538874] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:16:39,134 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:16:39,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-01-10 06:16:39,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492685020] [2022-01-10 06:16:39,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:16:39,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 06:16:39,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:39,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 06:16:39,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:16:39,136 INFO L87 Difference]: Start difference. First operand 1487 states and 2424 transitions. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 6 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (24), 7 states have call predecessors, (24), 5 states have call successors, (24) [2022-01-10 06:16:43,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:43,209 INFO L93 Difference]: Finished difference Result 5846 states and 9681 transitions. [2022-01-10 06:16:43,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 06:16:43,210 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 6 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (24), 7 states have call predecessors, (24), 5 states have call successors, (24) Word has length 142 [2022-01-10 06:16:43,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:43,233 INFO L225 Difference]: With dead ends: 5846 [2022-01-10 06:16:43,233 INFO L226 Difference]: Without dead ends: 4401 [2022-01-10 06:16:43,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 282 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 06:16:43,240 INFO L933 BasicCegarLoop]: 1415 mSDtfsCounter, 4599 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 5648 mSolverCounterSat, 1330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 6978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1330 IncrementalHoareTripleChecker+Valid, 5648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:43,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4683 Valid, 3794 Invalid, 6978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1330 Valid, 5648 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-01-10 06:16:43,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4401 states. [2022-01-10 06:16:43,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4401 to 4299. [2022-01-10 06:16:43,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4299 states, 3346 states have (on average 1.6084877465630603) internal successors, (5382), 3450 states have internal predecessors, (5382), 730 states have call successors, (730), 206 states have call predecessors, (730), 222 states have return successors, (885), 680 states have call predecessors, (885), 725 states have call successors, (885) [2022-01-10 06:16:43,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4299 states to 4299 states and 6997 transitions. [2022-01-10 06:16:43,356 INFO L78 Accepts]: Start accepts. Automaton has 4299 states and 6997 transitions. Word has length 142 [2022-01-10 06:16:43,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:43,357 INFO L470 AbstractCegarLoop]: Abstraction has 4299 states and 6997 transitions. [2022-01-10 06:16:43,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 6 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (24), 7 states have call predecessors, (24), 5 states have call successors, (24) [2022-01-10 06:16:43,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4299 states and 6997 transitions. [2022-01-10 06:16:43,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 06:16:43,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:43,360 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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 06:16:43,376 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 06:16:43,574 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 06:16:43,574 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:43,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:43,575 INFO L85 PathProgramCache]: Analyzing trace with hash 454928455, now seen corresponding path program 1 times [2022-01-10 06:16:43,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:43,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213221148] [2022-01-10 06:16:43,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:43,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:43,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:43,576 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 06:16:43,577 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 06:16:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:43,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:16:43,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:44,254 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:16:44,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:44,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:44,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213221148] [2022-01-10 06:16:44,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213221148] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:44,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:44,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:16:44,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105625373] [2022-01-10 06:16:44,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:44,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:16:44,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:44,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:16:44,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:16:44,255 INFO L87 Difference]: Start difference. First operand 4299 states and 6997 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-01-10 06:16:47,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:47,204 INFO L93 Difference]: Finished difference Result 11902 states and 19124 transitions. [2022-01-10 06:16:47,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:16:47,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 143 [2022-01-10 06:16:47,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:47,242 INFO L225 Difference]: With dead ends: 11902 [2022-01-10 06:16:47,242 INFO L226 Difference]: Without dead ends: 7635 [2022-01-10 06:16:47,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 139 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 06:16:47,259 INFO L933 BasicCegarLoop]: 1241 mSDtfsCounter, 2016 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 4773 mSolverCounterSat, 705 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2097 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 5478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 705 IncrementalHoareTripleChecker+Valid, 4773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:47,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2097 Valid, 3189 Invalid, 5478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [705 Valid, 4773 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 06:16:47,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7635 states. [2022-01-10 06:16:47,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7635 to 7446. [2022-01-10 06:16:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7446 states, 5615 states have (on average 1.544612644701692) internal successors, (8673), 5813 states have internal predecessors, (8673), 1401 states have call successors, (1401), 377 states have call predecessors, (1401), 429 states have return successors, (1708), 1332 states have call predecessors, (1708), 1396 states have call successors, (1708) [2022-01-10 06:16:47,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7446 states to 7446 states and 11782 transitions. [2022-01-10 06:16:47,743 INFO L78 Accepts]: Start accepts. Automaton has 7446 states and 11782 transitions. Word has length 143 [2022-01-10 06:16:47,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:47,743 INFO L470 AbstractCegarLoop]: Abstraction has 7446 states and 11782 transitions. [2022-01-10 06:16:47,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-01-10 06:16:47,762 INFO L276 IsEmpty]: Start isEmpty. Operand 7446 states and 11782 transitions. [2022-01-10 06:16:47,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-10 06:16:47,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:47,767 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-10 06:16:47,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-01-10 06:16:47,967 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 06:16:47,968 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:47,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:47,968 INFO L85 PathProgramCache]: Analyzing trace with hash -939910626, now seen corresponding path program 1 times [2022-01-10 06:16:47,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:47,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072785606] [2022-01-10 06:16:47,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:47,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:47,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:47,970 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 06:16:47,971 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 06:16:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:48,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 06:16:48,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:48,496 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 06:16:48,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:48,496 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:48,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072785606] [2022-01-10 06:16:48,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072785606] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:48,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:48,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:16:48,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650473219] [2022-01-10 06:16:48,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:48,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:16:48,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:48,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:16:48,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:16:48,498 INFO L87 Difference]: Start difference. First operand 7446 states and 11782 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 6 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-01-10 06:16:52,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:52,290 INFO L93 Difference]: Finished difference Result 21497 states and 34984 transitions. [2022-01-10 06:16:52,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 06:16:52,291 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 6 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 144 [2022-01-10 06:16:52,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:52,362 INFO L225 Difference]: With dead ends: 21497 [2022-01-10 06:16:52,362 INFO L226 Difference]: Without dead ends: 14087 [2022-01-10 06:16:52,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-01-10 06:16:52,399 INFO L933 BasicCegarLoop]: 1600 mSDtfsCounter, 3308 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 4470 mSolverCounterSat, 834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3442 SdHoareTripleChecker+Valid, 3419 SdHoareTripleChecker+Invalid, 5304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 834 IncrementalHoareTripleChecker+Valid, 4470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:52,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3442 Valid, 3419 Invalid, 5304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [834 Valid, 4470 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-10 06:16:52,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14087 states. [2022-01-10 06:16:52,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14087 to 13315. [2022-01-10 06:16:52,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13315 states, 9767 states have (on average 1.5412101976041774) internal successors, (15053), 10220 states have internal predecessors, (15053), 2834 states have call successors, (2834), 584 states have call predecessors, (2834), 713 states have return successors, (3639), 2776 states have call predecessors, (3639), 2829 states have call successors, (3639) [2022-01-10 06:16:53,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 21526 transitions. [2022-01-10 06:16:53,039 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 21526 transitions. Word has length 144 [2022-01-10 06:16:53,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:53,039 INFO L470 AbstractCegarLoop]: Abstraction has 13315 states and 21526 transitions. [2022-01-10 06:16:53,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 6 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-01-10 06:16:53,039 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 21526 transitions. [2022-01-10 06:16:53,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-10 06:16:53,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:53,042 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-10 06:16:53,062 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 06:16:53,257 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 06:16:53,258 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:53,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:53,258 INFO L85 PathProgramCache]: Analyzing trace with hash 364483103, now seen corresponding path program 1 times [2022-01-10 06:16:53,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:53,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364121820] [2022-01-10 06:16:53,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:53,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:53,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:53,260 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 06:16:53,263 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 06:16:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:53,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 06:16:53,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:16:53,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:53,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:53,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364121820] [2022-01-10 06:16:53,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364121820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:53,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:53,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:16:53,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512637331] [2022-01-10 06:16:53,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:53,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:16:53,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:53,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:16:53,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:16:53,868 INFO L87 Difference]: Start difference. First operand 13315 states and 21526 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-01-10 06:16:58,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:58,347 INFO L93 Difference]: Finished difference Result 40995 states and 67575 transitions. [2022-01-10 06:16:58,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 06:16:58,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 144 [2022-01-10 06:16:58,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:58,651 INFO L225 Difference]: With dead ends: 40995 [2022-01-10 06:16:58,651 INFO L226 Difference]: Without dead ends: 29247 [2022-01-10 06:16:58,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-01-10 06:16:58,702 INFO L933 BasicCegarLoop]: 1037 mSDtfsCounter, 2940 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 3874 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3016 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 4509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 3874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:58,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3016 Valid, 2791 Invalid, 4509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 3874 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-10 06:16:58,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29247 states. [2022-01-10 06:17:00,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29247 to 27864. [2022-01-10 06:17:00,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27864 states, 20470 states have (on average 1.5444553004396677) internal successors, (31615), 21430 states have internal predecessors, (31615), 5819 states have call successors, (5819), 1147 states have call predecessors, (5819), 1574 states have return successors, (8074), 5780 states have call predecessors, (8074), 5814 states have call successors, (8074) [2022-01-10 06:17:00,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27864 states to 27864 states and 45508 transitions. [2022-01-10 06:17:00,228 INFO L78 Accepts]: Start accepts. Automaton has 27864 states and 45508 transitions. Word has length 144 [2022-01-10 06:17:00,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:00,229 INFO L470 AbstractCegarLoop]: Abstraction has 27864 states and 45508 transitions. [2022-01-10 06:17:00,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-01-10 06:17:00,229 INFO L276 IsEmpty]: Start isEmpty. Operand 27864 states and 45508 transitions. [2022-01-10 06:17:00,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 06:17:00,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:00,235 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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 06:17:00,257 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 06:17:00,449 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 06:17:00,449 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:00,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:00,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1542182495, now seen corresponding path program 1 times [2022-01-10 06:17:00,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:00,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858926631] [2022-01-10 06:17:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:00,451 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:00,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:00,459 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 06:17:00,462 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 06:17:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:00,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 06:17:00,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:17:01,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:01,166 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:01,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858926631] [2022-01-10 06:17:01,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858926631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:01,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:01,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 06:17:01,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559931267] [2022-01-10 06:17:01,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:01,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 06:17:01,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:01,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 06:17:01,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:17:01,168 INFO L87 Difference]: Start difference. First operand 27864 states and 45508 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 9 states have internal predecessors, (101), 6 states have call successors, (17), 4 states have call predecessors, (17), 6 states have return successors, (17), 8 states have call predecessors, (17), 5 states have call successors, (17) [2022-01-10 06:17:04,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:04,274 INFO L93 Difference]: Finished difference Result 53970 states and 88853 transitions. [2022-01-10 06:17:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:17:04,275 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 9 states have internal predecessors, (101), 6 states have call successors, (17), 4 states have call predecessors, (17), 6 states have return successors, (17), 8 states have call predecessors, (17), 5 states have call successors, (17) Word has length 146 [2022-01-10 06:17:04,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:04,428 INFO L225 Difference]: With dead ends: 53970 [2022-01-10 06:17:04,428 INFO L226 Difference]: Without dead ends: 27673 [2022-01-10 06:17:04,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-01-10 06:17:04,539 INFO L933 BasicCegarLoop]: 763 mSDtfsCounter, 1426 mSDsluCounter, 2023 mSDsCounter, 0 mSdLazyCounter, 3927 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 4300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 3927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:04,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1426 Valid, 2786 Invalid, 4300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 3927 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 06:17:04,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27673 states. [2022-01-10 06:17:06,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27673 to 27673. [2022-01-10 06:17:06,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27673 states, 20365 states have (on average 1.544758163515836) internal successors, (31459), 21309 states have internal predecessors, (31459), 5768 states have call successors, (5768), 1128 states have call predecessors, (5768), 1539 states have return successors, (7979), 5729 states have call predecessors, (7979), 5763 states have call successors, (7979) [2022-01-10 06:17:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27673 states to 27673 states and 45206 transitions. [2022-01-10 06:17:06,525 INFO L78 Accepts]: Start accepts. Automaton has 27673 states and 45206 transitions. Word has length 146 [2022-01-10 06:17:06,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:06,526 INFO L470 AbstractCegarLoop]: Abstraction has 27673 states and 45206 transitions. [2022-01-10 06:17:06,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 9 states have internal predecessors, (101), 6 states have call successors, (17), 4 states have call predecessors, (17), 6 states have return successors, (17), 8 states have call predecessors, (17), 5 states have call successors, (17) [2022-01-10 06:17:06,526 INFO L276 IsEmpty]: Start isEmpty. Operand 27673 states and 45206 transitions. [2022-01-10 06:17:06,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 06:17:06,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:06,530 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-10 06:17:06,562 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 06:17:06,747 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 06:17:06,748 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:06,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:06,748 INFO L85 PathProgramCache]: Analyzing trace with hash -371905603, now seen corresponding path program 1 times [2022-01-10 06:17:06,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:06,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91945548] [2022-01-10 06:17:06,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:06,749 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:06,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:06,757 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 06:17:06,759 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 06:17:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:07,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 06:17:07,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:07,395 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:17:07,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:07,395 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:07,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91945548] [2022-01-10 06:17:07,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91945548] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:07,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:07,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 06:17:07,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460792494] [2022-01-10 06:17:07,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:07,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 06:17:07,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:07,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 06:17:07,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:17:07,397 INFO L87 Difference]: Start difference. First operand 27673 states and 45206 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 8 states have internal predecessors, (102), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2022-01-10 06:17:12,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:12,103 INFO L93 Difference]: Finished difference Result 59376 states and 97369 transitions. [2022-01-10 06:17:12,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 06:17:12,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 8 states have internal predecessors, (102), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) Word has length 149 [2022-01-10 06:17:12,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted.