java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 12:28:01,928 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:28:01,930 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:28:01,947 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:28:01,948 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:28:01,949 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:28:01,951 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:28:01,953 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:28:01,954 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:28:01,955 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:28:01,956 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:28:01,956 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:28:01,957 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:28:01,958 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:28:01,960 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:28:01,960 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:28:01,961 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:28:01,963 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:28:01,965 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:28:01,967 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:28:01,968 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:28:01,969 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:28:01,972 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 12:28:01,973 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 12:28:01,973 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 12:28:01,974 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 12:28:01,975 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 12:28:01,976 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 12:28:01,977 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 12:28:01,978 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 12:28:01,978 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 12:28:01,979 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 12:28:01,979 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 12:28:01,980 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 12:28:01,981 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 12:28:01,982 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 12:28:01,982 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 12:28:02,007 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:28:02,008 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:28:02,009 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:28:02,009 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:28:02,009 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:28:02,009 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:28:02,010 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:28:02,010 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:28:02,010 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:28:02,010 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:28:02,011 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:28:02,011 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:28:02,012 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:28:02,012 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:28:02,012 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:28:02,012 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:28:02,012 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:28:02,013 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:28:02,013 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:28:02,013 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:28:02,013 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:28:02,013 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:28:02,014 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:28:02,014 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:28:02,014 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:28:02,014 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:28:02,015 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:28:02,015 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:28:02,015 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:28:02,015 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:28:02,015 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:28:02,016 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:28:02,016 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:28:02,016 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:28:02,061 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:28:02,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:28:02,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:28:02,082 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:28:02,082 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:28:02,083 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c [2018-09-18 12:28:02,439 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e9f6f5d6/01bd8f284fa04c57a9ecc0e430f0503e/FLAGe985fbc24 [2018-09-18 12:28:03,034 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:28:03,035 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c [2018-09-18 12:28:03,081 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e9f6f5d6/01bd8f284fa04c57a9ecc0e430f0503e/FLAGe985fbc24 [2018-09-18 12:28:03,099 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e9f6f5d6/01bd8f284fa04c57a9ecc0e430f0503e [2018-09-18 12:28:03,114 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:28:03,117 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:28:03,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:28:03,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:28:03,126 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:28:03,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:28:03" (1/1) ... [2018-09-18 12:28:03,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a64aa8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:28:03, skipping insertion in model container [2018-09-18 12:28:03,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:28:03" (1/1) ... [2018-09-18 12:28:03,145 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:28:05,107 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:28:05,128 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:28:06,142 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:28:06,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:28:06 WrapperNode [2018-09-18 12:28:06,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:28:06,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:28:06,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:28:06,780 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:28:06,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:28:06" (1/1) ... [2018-09-18 12:28:06,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:28:06" (1/1) ... [2018-09-18 12:28:07,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:28:07,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:28:07,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:28:07,131 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:28:08,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:28:06" (1/1) ... [2018-09-18 12:28:08,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:28:06" (1/1) ... [2018-09-18 12:28:08,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:28:06" (1/1) ... [2018-09-18 12:28:08,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:28:06" (1/1) ... [2018-09-18 12:28:08,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:28:06" (1/1) ... [2018-09-18 12:28:08,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:28:06" (1/1) ... [2018-09-18 12:28:08,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:28:06" (1/1) ... [2018-09-18 12:28:08,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:28:08,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:28:08,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:28:08,868 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:28:08,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:28:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:28:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:28:08,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:28:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-09-18 12:28:08,939 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-09-18 12:28:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-09-18 12:28:08,939 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-09-18 12:28:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 12:28:08,940 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 12:28:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 12:28:08,941 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 12:28:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:28:08,941 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:28:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:28:08,941 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:28:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:28:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:28:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:28:08,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:28:26,948 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:28:26,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:28:26 BoogieIcfgContainer [2018-09-18 12:28:26,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:28:26,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:28:26,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:28:26,953 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:28:26,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:28:03" (1/3) ... [2018-09-18 12:28:26,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68985a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:28:26, skipping insertion in model container [2018-09-18 12:28:26,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:28:06" (2/3) ... [2018-09-18 12:28:26,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68985a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:28:26, skipping insertion in model container [2018-09-18 12:28:26,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:28:26" (3/3) ... [2018-09-18 12:28:26,957 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label02_true-unreach-call.c [2018-09-18 12:28:26,967 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:28:26,978 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:28:27,047 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:28:27,048 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:28:27,049 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:28:27,049 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:28:27,049 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:28:27,049 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:28:27,049 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:28:27,049 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:28:27,049 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:28:27,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-09-18 12:28:27,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-18 12:28:27,112 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:28:27,114 INFO L376 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] [2018-09-18 12:28:27,115 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:28:27,120 INFO L82 PathProgramCache]: Analyzing trace with hash -204669534, now seen corresponding path program 1 times [2018-09-18 12:28:27,123 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:28:27,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:28:27,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:28:27,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:28:27,173 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:28:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:28:27,677 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:28:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:28:27,756 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:28:27,756 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 12:28:27,756 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:28:27,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:28:27,779 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:28:27,779 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:28:27,782 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-09-18 12:28:43,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:28:43,717 INFO L93 Difference]: Finished difference Result 5034 states and 9499 transitions. [2018-09-18 12:28:43,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:28:43,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2018-09-18 12:28:43,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:28:43,771 INFO L225 Difference]: With dead ends: 5034 [2018-09-18 12:28:43,771 INFO L226 Difference]: Without dead ends: 3254 [2018-09-18 12:28:43,786 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:28:43,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2018-09-18 12:28:44,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3207. [2018-09-18 12:28:44,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3207 states. [2018-09-18 12:28:44,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 5994 transitions. [2018-09-18 12:28:44,042 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 5994 transitions. Word has length 73 [2018-09-18 12:28:44,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:28:44,045 INFO L480 AbstractCegarLoop]: Abstraction has 3207 states and 5994 transitions. [2018-09-18 12:28:44,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:28:44,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 5994 transitions. [2018-09-18 12:28:44,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-18 12:28:44,063 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:28:44,063 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:28:44,064 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:28:44,064 INFO L82 PathProgramCache]: Analyzing trace with hash -238257218, now seen corresponding path program 1 times [2018-09-18 12:28:44,065 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:28:44,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:28:44,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:28:44,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:28:44,067 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:28:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:28:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:28:44,661 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:28:44,661 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:28:44,661 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:28:44,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:28:44,663 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:28:44,664 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:28:44,664 INFO L87 Difference]: Start difference. First operand 3207 states and 5994 transitions. Second operand 6 states. [2018-09-18 12:29:10,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:29:10,128 INFO L93 Difference]: Finished difference Result 9590 states and 17980 transitions. [2018-09-18 12:29:10,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-18 12:29:10,132 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-09-18 12:29:10,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:29:10,180 INFO L225 Difference]: With dead ends: 9590 [2018-09-18 12:29:10,180 INFO L226 Difference]: Without dead ends: 6389 [2018-09-18 12:29:10,192 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:29:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2018-09-18 12:29:10,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 6281. [2018-09-18 12:29:10,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6281 states. [2018-09-18 12:29:10,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 11310 transitions. [2018-09-18 12:29:10,412 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 11310 transitions. Word has length 146 [2018-09-18 12:29:10,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:29:10,413 INFO L480 AbstractCegarLoop]: Abstraction has 6281 states and 11310 transitions. [2018-09-18 12:29:10,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:29:10,413 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 11310 transitions. [2018-09-18 12:29:10,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-09-18 12:29:10,420 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:29:10,420 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:29:10,424 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:29:10,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1315033247, now seen corresponding path program 1 times [2018-09-18 12:29:10,425 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:29:10,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:29:10,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:29:10,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:29:10,426 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:29:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:29:10,718 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:29:10,718 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:29:10,718 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 12:29:10,718 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:29:10,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:29:10,719 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:29:10,719 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 12:29:10,720 INFO L87 Difference]: Start difference. First operand 6281 states and 11310 transitions. Second operand 5 states. [2018-09-18 12:29:44,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:29:44,452 INFO L93 Difference]: Finished difference Result 18963 states and 34370 transitions. [2018-09-18 12:29:44,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:29:44,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2018-09-18 12:29:44,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:29:44,517 INFO L225 Difference]: With dead ends: 18963 [2018-09-18 12:29:44,517 INFO L226 Difference]: Without dead ends: 12688 [2018-09-18 12:29:44,539 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:29:44,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12688 states. [2018-09-18 12:29:44,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12688 to 12416. [2018-09-18 12:29:44,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12416 states. [2018-09-18 12:29:44,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12416 states to 12416 states and 18931 transitions. [2018-09-18 12:29:44,895 INFO L78 Accepts]: Start accepts. Automaton has 12416 states and 18931 transitions. Word has length 160 [2018-09-18 12:29:44,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:29:44,900 INFO L480 AbstractCegarLoop]: Abstraction has 12416 states and 18931 transitions. [2018-09-18 12:29:44,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:29:44,901 INFO L276 IsEmpty]: Start isEmpty. Operand 12416 states and 18931 transitions. [2018-09-18 12:29:44,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-18 12:29:44,904 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:29:44,905 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:29:44,905 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:29:44,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1267702423, now seen corresponding path program 1 times [2018-09-18 12:29:44,905 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:29:44,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:29:44,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:29:44,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:29:44,911 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:29:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:29:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 132 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:29:45,229 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:29:45,229 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:29:45,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:29:45,238 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:29:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:29:45,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:29:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 12:29:45,544 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:29:45,798 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 132 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:29:45,820 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:29:45,820 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-18 12:29:45,820 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:29:45,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:29:45,821 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:29:45,821 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:29:45,822 INFO L87 Difference]: Start difference. First operand 12416 states and 18931 transitions. Second operand 5 states. [2018-09-18 12:30:11,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:30:11,471 INFO L93 Difference]: Finished difference Result 40248 states and 63087 transitions. [2018-09-18 12:30:11,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:30:11,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2018-09-18 12:30:11,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:30:11,621 INFO L225 Difference]: With dead ends: 40248 [2018-09-18 12:30:11,622 INFO L226 Difference]: Without dead ends: 27838 [2018-09-18 12:30:11,668 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 498 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:30:11,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27838 states. [2018-09-18 12:30:12,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27838 to 26946. [2018-09-18 12:30:12,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26946 states. [2018-09-18 12:30:12,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26946 states to 26946 states and 38013 transitions. [2018-09-18 12:30:12,455 INFO L78 Accepts]: Start accepts. Automaton has 26946 states and 38013 transitions. Word has length 250 [2018-09-18 12:30:12,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:30:12,456 INFO L480 AbstractCegarLoop]: Abstraction has 26946 states and 38013 transitions. [2018-09-18 12:30:12,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:30:12,456 INFO L276 IsEmpty]: Start isEmpty. Operand 26946 states and 38013 transitions. [2018-09-18 12:30:12,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-09-18 12:30:12,466 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:30:12,466 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:30:12,467 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:30:12,467 INFO L82 PathProgramCache]: Analyzing trace with hash 979448746, now seen corresponding path program 1 times [2018-09-18 12:30:12,467 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:30:12,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:30:12,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:30:12,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:30:12,469 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:30:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:30:12,852 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:30:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 132 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:30:13,679 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:30:13,679 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:30:13,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:30:13,687 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:30:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:30:13,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:30:14,006 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 12:30:14,006 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:30:14,306 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 132 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:30:14,339 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:30:14,340 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 12:30:14,340 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:30:14,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:30:14,342 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:30:14,342 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:30:14,342 INFO L87 Difference]: Start difference. First operand 26946 states and 38013 transitions. Second operand 5 states. [2018-09-18 12:30:38,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:30:38,085 INFO L93 Difference]: Finished difference Result 75826 states and 112478 transitions. [2018-09-18 12:30:38,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:30:38,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2018-09-18 12:30:38,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:30:38,229 INFO L225 Difference]: With dead ends: 75826 [2018-09-18 12:30:38,229 INFO L226 Difference]: Without dead ends: 48886 [2018-09-18 12:30:38,305 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 645 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-18 12:30:38,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48886 states. [2018-09-18 12:30:39,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48886 to 47921. [2018-09-18 12:30:39,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47921 states. [2018-09-18 12:30:39,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47921 states to 47921 states and 68473 transitions. [2018-09-18 12:30:39,277 INFO L78 Accepts]: Start accepts. Automaton has 47921 states and 68473 transitions. Word has length 325 [2018-09-18 12:30:39,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:30:39,278 INFO L480 AbstractCegarLoop]: Abstraction has 47921 states and 68473 transitions. [2018-09-18 12:30:39,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:30:39,278 INFO L276 IsEmpty]: Start isEmpty. Operand 47921 states and 68473 transitions. [2018-09-18 12:30:39,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2018-09-18 12:30:39,304 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:30:39,305 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:30:39,305 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:30:39,305 INFO L82 PathProgramCache]: Analyzing trace with hash 368098506, now seen corresponding path program 1 times [2018-09-18 12:30:39,306 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:30:39,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:30:39,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:30:39,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:30:39,307 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:30:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:30:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 366 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:30:39,888 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:30:39,889 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:30:39,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:30:39,898 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:30:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:30:40,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:30:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 468 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 12:30:40,252 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:30:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 366 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:30:40,626 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:30:40,626 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:30:40,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:30:40,642 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:30:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:30:40,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:30:42,024 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 468 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 12:30:42,024 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:30:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 366 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:30:42,881 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:30:42,882 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 12:30:42,882 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:30:42,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:30:42,883 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:30:42,884 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:30:42,884 INFO L87 Difference]: Start difference. First operand 47921 states and 68473 transitions. Second operand 9 states. [2018-09-18 12:31:18,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:31:18,928 INFO L93 Difference]: Finished difference Result 195262 states and 345391 transitions. [2018-09-18 12:31:18,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-18 12:31:18,928 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 549 [2018-09-18 12:31:18,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:31:19,570 INFO L225 Difference]: With dead ends: 195262 [2018-09-18 12:31:19,570 INFO L226 Difference]: Without dead ends: 136055 [2018-09-18 12:31:19,922 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2216 GetRequests, 2194 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-09-18 12:31:20,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136055 states. [2018-09-18 12:31:22,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136055 to 134663. [2018-09-18 12:31:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134663 states. [2018-09-18 12:31:22,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134663 states to 134663 states and 192535 transitions. [2018-09-18 12:31:22,879 INFO L78 Accepts]: Start accepts. Automaton has 134663 states and 192535 transitions. Word has length 549 [2018-09-18 12:31:22,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:31:22,880 INFO L480 AbstractCegarLoop]: Abstraction has 134663 states and 192535 transitions. [2018-09-18 12:31:22,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:31:22,880 INFO L276 IsEmpty]: Start isEmpty. Operand 134663 states and 192535 transitions. [2018-09-18 12:31:22,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2018-09-18 12:31:22,896 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:31:22,897 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:31:22,897 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:31:22,897 INFO L82 PathProgramCache]: Analyzing trace with hash -766461474, now seen corresponding path program 1 times [2018-09-18 12:31:22,897 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:31:22,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:31:22,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:31:22,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:31:22,899 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:31:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:31:24,103 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:31:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 12:31:24,339 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:31:24,339 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:31:24,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:31:24,347 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:31:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:31:24,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:31:24,740 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:31:24,741 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:31:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:31:25,069 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:31:25,070 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2018-09-18 12:31:25,070 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:31:25,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:31:25,071 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:31:25,071 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:31:25,071 INFO L87 Difference]: Start difference. First operand 134663 states and 192535 transitions. Second operand 3 states. [2018-09-18 12:31:39,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:31:39,431 INFO L93 Difference]: Finished difference Result 269323 states and 387441 transitions. [2018-09-18 12:31:39,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:31:39,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 582 [2018-09-18 12:31:39,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:31:39,817 INFO L225 Difference]: With dead ends: 269323 [2018-09-18 12:31:39,817 INFO L226 Difference]: Without dead ends: 134666 [2018-09-18 12:31:40,115 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1172 GetRequests, 1165 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:31:40,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134666 states. [2018-09-18 12:31:42,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134666 to 134660. [2018-09-18 12:31:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134660 states. [2018-09-18 12:31:42,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134660 states to 134660 states and 177828 transitions. [2018-09-18 12:31:42,713 INFO L78 Accepts]: Start accepts. Automaton has 134660 states and 177828 transitions. Word has length 582 [2018-09-18 12:31:42,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:31:42,715 INFO L480 AbstractCegarLoop]: Abstraction has 134660 states and 177828 transitions. [2018-09-18 12:31:42,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:31:42,715 INFO L276 IsEmpty]: Start isEmpty. Operand 134660 states and 177828 transitions. [2018-09-18 12:31:42,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2018-09-18 12:31:42,768 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:31:42,769 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:31:42,769 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:31:42,770 INFO L82 PathProgramCache]: Analyzing trace with hash 13142892, now seen corresponding path program 1 times [2018-09-18 12:31:42,770 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:31:42,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:31:42,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:31:42,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:31:42,771 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:31:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:31:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 292 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:31:44,951 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:31:44,951 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:31:44,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:31:44,958 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:31:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:31:45,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:31:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 394 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 12:31:45,558 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:31:46,805 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 292 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:31:46,827 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:31:46,827 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:31:46,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:31:46,842 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:31:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:31:47,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:31:47,749 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 394 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 12:31:47,749 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:31:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 292 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:31:48,905 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:31:48,906 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-09-18 12:31:48,906 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:31:48,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:31:48,908 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:31:48,908 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-09-18 12:31:48,908 INFO L87 Difference]: Start difference. First operand 134660 states and 177828 transitions. Second operand 9 states. Received shutdown request... [2018-09-18 12:31:57,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-18 12:31:57,437 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:31:57,442 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:31:57,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:31:57 BoogieIcfgContainer [2018-09-18 12:31:57,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:31:57,444 INFO L168 Benchmark]: Toolchain (without parser) took 234329.02 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -994.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-18 12:31:57,445 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 12:31:57,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3660.49 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 184.5 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -106.1 MB). Peak memory consumption was 492.2 MB. Max. memory is 7.1 GB. [2018-09-18 12:31:57,446 INFO L168 Benchmark]: Boogie Procedure Inliner took 350.63 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 61.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. [2018-09-18 12:31:57,447 INFO L168 Benchmark]: Boogie Preprocessor took 1736.76 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 898.1 MB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -898.9 MB). Peak memory consumption was 126.3 MB. Max. memory is 7.1 GB. [2018-09-18 12:31:57,448 INFO L168 Benchmark]: RCFGBuilder took 18081.18 ms. Allocated memory was 2.6 GB in the beginning and 2.8 GB in the end (delta: 219.7 MB). Free memory was 2.4 GB in the beginning and 2.2 GB in the end (delta: 168.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-18 12:31:57,449 INFO L168 Benchmark]: TraceAbstraction took 210492.94 ms. Allocated memory was 2.8 GB in the beginning and 3.6 GB in the end (delta: 719.3 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -219.4 MB). Peak memory consumption was 499.9 MB. Max. memory is 7.1 GB. [2018-09-18 12:31:57,456 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3660.49 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 184.5 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -106.1 MB). Peak memory consumption was 492.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 350.63 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 61.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1736.76 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 898.1 MB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -898.9 MB). Peak memory consumption was 126.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18081.18 ms. Allocated memory was 2.6 GB in the beginning and 2.8 GB in the end (delta: 219.7 MB). Free memory was 2.4 GB in the beginning and 2.2 GB in the end (delta: 168.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 210492.94 ms. Allocated memory was 2.8 GB in the beginning and 3.6 GB in the end (delta: 719.3 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -219.4 MB). Peak memory consumption was 499.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 214]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 214). Cancelled while BasicCegarLoop was constructing difference of abstraction (134660states) and FLOYD_HOARE automaton (currently 15 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (20788 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 210.4s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 185.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4995 SDtfs, 46207 SDslu, 5573 SDs, 0 SdLazy, 74607 SolverSat, 19601 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 155.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8112 GetRequests, 8019 SyntacticMatches, 12 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134663occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 3682 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.0s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 6974 NumberOfCodeBlocks, 6974 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 10963 ConstructedInterpolants, 0 QuantifiedInterpolants, 12886725 SizeOfPredicates, 6 NumberOfNonLiveVariables, 5759 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 22 InterpolantComputations, 7 PerfectInterpolantSequences, 5730/6644 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label02_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-31-57-471.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label02_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-31-57-471.csv Completed graceful shutdown