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/Problem04_label07_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 16:08:57,691 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 16:08:57,693 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 16:08:57,711 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 16:08:57,711 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 16:08:57,712 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 16:08:57,713 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 16:08:57,715 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 16:08:57,717 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 16:08:57,718 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 16:08:57,719 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 16:08:57,719 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 16:08:57,720 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 16:08:57,721 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 16:08:57,722 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 16:08:57,723 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 16:08:57,724 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 16:08:57,726 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 16:08:57,728 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 16:08:57,730 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 16:08:57,731 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 16:08:57,732 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 16:08:57,735 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 16:08:57,735 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 16:08:57,735 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 16:08:57,736 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 16:08:57,738 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 16:08:57,738 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 16:08:57,739 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 16:08:57,741 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 16:08:57,741 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 16:08:57,741 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 16:08:57,742 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 16:08:57,742 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 16:08:57,743 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 16:08:57,744 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 16:08:57,744 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 [2018-09-14 16:08:57,760 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 16:08:57,761 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 16:08:57,761 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 16:08:57,762 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 16:08:57,762 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 16:08:57,762 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 16:08:57,762 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 16:08:57,762 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 16:08:57,763 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 16:08:57,763 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 16:08:57,763 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 16:08:57,764 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 16:08:57,764 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 16:08:57,764 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 16:08:57,764 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 16:08:57,765 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 16:08:57,765 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 16:08:57,765 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 16:08:57,765 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 16:08:57,765 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 16:08:57,766 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 16:08:57,766 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 16:08:57,766 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 16:08:57,766 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 16:08:57,766 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 16:08:57,767 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 16:08:57,767 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 16:08:57,767 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 16:08:57,767 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 16:08:57,767 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 16:08:57,768 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 16:08:57,768 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 16:08:57,768 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 16:08:57,812 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 16:08:57,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 16:08:57,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 16:08:57,834 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 16:08:57,835 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 16:08:57,836 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label07_true-unreach-call.c [2018-09-14 16:08:58,193 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2539471e2/7e3ed23865914aa0a51434b89f595926/FLAGa1ca627e6 [2018-09-14 16:08:58,695 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 16:08:58,696 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label07_true-unreach-call.c [2018-09-14 16:08:58,732 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2539471e2/7e3ed23865914aa0a51434b89f595926/FLAGa1ca627e6 [2018-09-14 16:08:58,752 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2539471e2/7e3ed23865914aa0a51434b89f595926 [2018-09-14 16:08:58,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 16:08:58,771 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 16:08:58,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 16:08:58,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 16:08:58,783 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 16:08:58,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:08:58" (1/1) ... [2018-09-14 16:08:58,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69bb34dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:08:58, skipping insertion in model container [2018-09-14 16:08:58,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:08:58" (1/1) ... [2018-09-14 16:08:58,802 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 16:09:00,174 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:09:00,195 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 16:09:00,980 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:09:01,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:09:01 WrapperNode [2018-09-14 16:09:01,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 16:09:01,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 16:09:01,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 16:09:01,149 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 16:09:01,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:09:01" (1/1) ... [2018-09-14 16:09:01,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:09:01" (1/1) ... [2018-09-14 16:09:01,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 16:09:01,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 16:09:01,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 16:09:01,306 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 16:09:01,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:09:01" (1/1) ... [2018-09-14 16:09:01,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:09:01" (1/1) ... [2018-09-14 16:09:01,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:09:01" (1/1) ... [2018-09-14 16:09:01,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:09:01" (1/1) ... [2018-09-14 16:09:01,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:09:01" (1/1) ... [2018-09-14 16:09:01,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:09:01" (1/1) ... [2018-09-14 16:09:01,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:09:01" (1/1) ... [2018-09-14 16:09:01,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 16:09:01,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 16:09:01,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 16:09:01,900 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 16:09:01,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:09:01" (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 [2018-09-14 16:09:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 16:09:01,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 16:09:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 16:09:01,974 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 16:09:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 16:09:01,974 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 16:09:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 16:09:01,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 16:09:01,975 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 16:09:01,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 16:09:01,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 16:09:01,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 16:09:01,975 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 16:09:01,976 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 16:09:11,867 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 16:09:11,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:09:11 BoogieIcfgContainer [2018-09-14 16:09:11,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 16:09:11,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 16:09:11,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 16:09:11,872 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 16:09:11,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 04:08:58" (1/3) ... [2018-09-14 16:09:11,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a0d1d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:09:11, skipping insertion in model container [2018-09-14 16:09:11,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:09:01" (2/3) ... [2018-09-14 16:09:11,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a0d1d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:09:11, skipping insertion in model container [2018-09-14 16:09:11,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:09:11" (3/3) ... [2018-09-14 16:09:11,876 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label07_true-unreach-call.c [2018-09-14 16:09:11,886 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 16:09:11,896 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 16:09:11,960 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 16:09:11,961 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 16:09:11,961 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 16:09:11,961 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 16:09:11,961 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 16:09:11,961 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 16:09:11,961 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 16:09:11,962 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 16:09:11,962 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 16:09:12,001 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-09-14 16:09:12,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2018-09-14 16:09:12,062 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:09:12,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:09:12,066 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:09:12,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1281467562, now seen corresponding path program 1 times [2018-09-14 16:09:12,076 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:09:12,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:09:12,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:09:12,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:09:12,131 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:09:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:09:13,626 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:09:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:09:14,418 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:09:14,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 16:09:14,419 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:09:14,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:09:14,442 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:09:14,443 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:09:14,445 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-09-14 16:09:20,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:09:20,776 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-09-14 16:09:20,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:09:20,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 802 [2018-09-14 16:09:20,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:09:20,820 INFO L225 Difference]: With dead ends: 2647 [2018-09-14 16:09:20,820 INFO L226 Difference]: Without dead ends: 1738 [2018-09-14 16:09:20,833 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:09:20,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-09-14 16:09:21,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-09-14 16:09:21,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-09-14 16:09:21,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3145 transitions. [2018-09-14 16:09:21,043 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3145 transitions. Word has length 802 [2018-09-14 16:09:21,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:09:21,049 INFO L480 AbstractCegarLoop]: Abstraction has 1738 states and 3145 transitions. [2018-09-14 16:09:21,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:09:21,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3145 transitions. [2018-09-14 16:09:21,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2018-09-14 16:09:21,090 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:09:21,091 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:09:21,092 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:09:21,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1295907317, now seen corresponding path program 1 times [2018-09-14 16:09:21,093 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:09:21,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:09:21,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:09:21,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:09:21,095 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:09:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:09:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:09:23,245 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:09:23,245 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 16:09:23,245 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:09:23,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 16:09:23,248 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 16:09:23,248 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 16:09:23,249 INFO L87 Difference]: Start difference. First operand 1738 states and 3145 transitions. Second operand 4 states. [2018-09-14 16:09:33,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:09:33,012 INFO L93 Difference]: Finished difference Result 6810 states and 12576 transitions. [2018-09-14 16:09:33,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 16:09:33,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 811 [2018-09-14 16:09:33,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:09:33,051 INFO L225 Difference]: With dead ends: 6810 [2018-09-14 16:09:33,052 INFO L226 Difference]: Without dead ends: 5078 [2018-09-14 16:09:33,060 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 16:09:33,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5078 states. [2018-09-14 16:09:33,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5078 to 5078. [2018-09-14 16:09:33,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5078 states. [2018-09-14 16:09:33,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 8141 transitions. [2018-09-14 16:09:33,210 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 8141 transitions. Word has length 811 [2018-09-14 16:09:33,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:09:33,215 INFO L480 AbstractCegarLoop]: Abstraction has 5078 states and 8141 transitions. [2018-09-14 16:09:33,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 16:09:33,215 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 8141 transitions. [2018-09-14 16:09:33,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2018-09-14 16:09:33,247 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:09:33,248 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:09:33,248 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:09:33,249 INFO L82 PathProgramCache]: Analyzing trace with hash 541547521, now seen corresponding path program 1 times [2018-09-14 16:09:33,249 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:09:33,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:09:33,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:09:33,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:09:33,252 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:09:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:09:33,599 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-14 16:09:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:09:34,629 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:09:34,630 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:09:34,630 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:09:34,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:09:34,632 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:09:34,632 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:09:34,632 INFO L87 Difference]: Start difference. First operand 5078 states and 8141 transitions. Second operand 6 states. [2018-09-14 16:09:42,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:09:42,895 INFO L93 Difference]: Finished difference Result 12944 states and 20893 transitions. [2018-09-14 16:09:42,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 16:09:42,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 818 [2018-09-14 16:09:42,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:09:42,950 INFO L225 Difference]: With dead ends: 12944 [2018-09-14 16:09:42,950 INFO L226 Difference]: Without dead ends: 7872 [2018-09-14 16:09:42,968 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:09:42,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7872 states. [2018-09-14 16:09:43,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7872 to 7792. [2018-09-14 16:09:43,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7792 states. [2018-09-14 16:09:43,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7792 states to 7792 states and 12088 transitions. [2018-09-14 16:09:43,212 INFO L78 Accepts]: Start accepts. Automaton has 7792 states and 12088 transitions. Word has length 818 [2018-09-14 16:09:43,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:09:43,212 INFO L480 AbstractCegarLoop]: Abstraction has 7792 states and 12088 transitions. [2018-09-14 16:09:43,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:09:43,213 INFO L276 IsEmpty]: Start isEmpty. Operand 7792 states and 12088 transitions. [2018-09-14 16:09:43,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2018-09-14 16:09:43,248 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:09:43,248 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:09:43,249 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:09:43,249 INFO L82 PathProgramCache]: Analyzing trace with hash 771784356, now seen corresponding path program 1 times [2018-09-14 16:09:43,250 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:09:43,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:09:43,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:09:43,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:09:43,251 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:09:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:09:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:09:44,150 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:09:44,150 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 [2018-09-14 16:09:44,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:09:44,171 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:09:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:09:44,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:09:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-14 16:09:45,933 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:09:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-14 16:09:47,071 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 16:09:47,073 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-09-14 16:09:47,073 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:09:47,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:09:47,079 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:09:47,079 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-14 16:09:47,079 INFO L87 Difference]: Start difference. First operand 7792 states and 12088 transitions. Second operand 3 states. [2018-09-14 16:09:52,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:09:52,392 INFO L93 Difference]: Finished difference Result 23199 states and 36889 transitions. [2018-09-14 16:09:52,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:09:52,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 838 [2018-09-14 16:09:52,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:09:52,487 INFO L225 Difference]: With dead ends: 23199 [2018-09-14 16:09:52,487 INFO L226 Difference]: Without dead ends: 15413 [2018-09-14 16:09:52,521 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1681 GetRequests, 1675 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-14 16:09:52,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15413 states. [2018-09-14 16:09:52,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15413 to 15413. [2018-09-14 16:09:52,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15413 states. [2018-09-14 16:09:52,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15413 states to 15413 states and 21780 transitions. [2018-09-14 16:09:52,953 INFO L78 Accepts]: Start accepts. Automaton has 15413 states and 21780 transitions. Word has length 838 [2018-09-14 16:09:52,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:09:52,955 INFO L480 AbstractCegarLoop]: Abstraction has 15413 states and 21780 transitions. [2018-09-14 16:09:52,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:09:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 15413 states and 21780 transitions. [2018-09-14 16:09:53,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 851 [2018-09-14 16:09:53,010 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:09:53,011 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:09:53,011 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:09:53,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1020731074, now seen corresponding path program 1 times [2018-09-14 16:09:53,012 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:09:53,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:09:53,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:09:53,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:09:53,015 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:09:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:09:53,384 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-14 16:09:53,731 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-14 16:09:53,956 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-14 16:09:55,281 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 43 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:09:55,281 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:09:55,281 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 [2018-09-14 16:09:55,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:09:55,297 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:09:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:09:55,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:09:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:09:56,244 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:09:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:09:56,689 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:09:56,689 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:09:56,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:09:56,707 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:09:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:09:57,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:09:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-14 16:09:58,173 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:09:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-14 16:09:59,091 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-14 16:09:59,092 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [11, 5, 5] total 22 [2018-09-14 16:09:59,093 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:09:59,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:09:59,094 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:09:59,095 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2018-09-14 16:09:59,095 INFO L87 Difference]: Start difference. First operand 15413 states and 21780 transitions. Second operand 5 states. [2018-09-14 16:10:05,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:10:05,699 INFO L93 Difference]: Finished difference Result 38945 states and 58210 transitions. [2018-09-14 16:10:05,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 16:10:05,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 850 [2018-09-14 16:10:05,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:10:05,825 INFO L225 Difference]: With dead ends: 38945 [2018-09-14 16:10:05,825 INFO L226 Difference]: Without dead ends: 23538 [2018-09-14 16:10:05,889 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3411 GetRequests, 3388 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2018-09-14 16:10:05,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23538 states. [2018-09-14 16:10:06,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23538 to 23461. [2018-09-14 16:10:06,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23461 states. [2018-09-14 16:10:06,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23461 states to 23461 states and 32746 transitions. [2018-09-14 16:10:06,926 INFO L78 Accepts]: Start accepts. Automaton has 23461 states and 32746 transitions. Word has length 850 [2018-09-14 16:10:06,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:10:06,927 INFO L480 AbstractCegarLoop]: Abstraction has 23461 states and 32746 transitions. [2018-09-14 16:10:06,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:10:06,927 INFO L276 IsEmpty]: Start isEmpty. Operand 23461 states and 32746 transitions. [2018-09-14 16:10:07,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2018-09-14 16:10:07,001 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:10:07,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:10:07,003 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:10:07,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1100427743, now seen corresponding path program 1 times [2018-09-14 16:10:07,004 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:10:07,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:10:07,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:10:07,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:10:07,005 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:10:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:10:07,343 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:10:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:10:08,157 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:10:08,157 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:10:08,157 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:10:08,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:10:08,159 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:10:08,159 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:10:08,159 INFO L87 Difference]: Start difference. First operand 23461 states and 32746 transitions. Second operand 6 states. [2018-09-14 16:10:17,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:10:17,087 INFO L93 Difference]: Finished difference Result 61583 states and 88394 transitions. [2018-09-14 16:10:17,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:10:17,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 853 [2018-09-14 16:10:17,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:10:17,232 INFO L225 Difference]: With dead ends: 61583 [2018-09-14 16:10:17,232 INFO L226 Difference]: Without dead ends: 38128 [2018-09-14 16:10:17,294 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:10:17,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38128 states. [2018-09-14 16:10:17,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38128 to 36312. [2018-09-14 16:10:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36312 states. [2018-09-14 16:10:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36312 states to 36312 states and 48044 transitions. [2018-09-14 16:10:18,018 INFO L78 Accepts]: Start accepts. Automaton has 36312 states and 48044 transitions. Word has length 853 [2018-09-14 16:10:18,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:10:18,019 INFO L480 AbstractCegarLoop]: Abstraction has 36312 states and 48044 transitions. [2018-09-14 16:10:18,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:10:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand 36312 states and 48044 transitions. [2018-09-14 16:10:18,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2018-09-14 16:10:18,094 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:10:18,095 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:10:18,095 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:10:18,096 INFO L82 PathProgramCache]: Analyzing trace with hash 761508404, now seen corresponding path program 1 times [2018-09-14 16:10:18,096 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:10:18,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:10:18,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:10:18,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:10:18,097 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:10:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:10:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 178 proven. 28 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-14 16:10:19,538 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:10:19,538 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:10:19,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:10:19,554 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:10:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:10:19,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:10:20,747 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-14 16:10:20,748 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:10:21,863 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 201 proven. 20 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-14 16:10:21,887 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:10:21,887 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 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:10:21,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:10:21,904 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:10:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:10:22,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:10:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-14 16:10:23,537 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:10:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 201 proven. 20 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-14 16:10:24,268 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:10:24,269 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-14 16:10:24,269 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:10:24,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:10:24,271 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:10:24,271 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-14 16:10:24,272 INFO L87 Difference]: Start difference. First operand 36312 states and 48044 transitions. Second operand 9 states. [2018-09-14 16:10:40,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:10:40,667 INFO L93 Difference]: Finished difference Result 106086 states and 153684 transitions. [2018-09-14 16:10:40,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-14 16:10:40,667 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 968 [2018-09-14 16:10:40,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:10:40,979 INFO L225 Difference]: With dead ends: 106086 [2018-09-14 16:10:40,979 INFO L226 Difference]: Without dead ends: 69780 [2018-09-14 16:10:41,062 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3928 GetRequests, 3886 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=352, Invalid=1370, Unknown=0, NotChecked=0, Total=1722 [2018-09-14 16:10:41,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69780 states. [2018-09-14 16:10:42,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69780 to 66891. [2018-09-14 16:10:42,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66891 states. [2018-09-14 16:10:42,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66891 states to 66891 states and 85107 transitions. [2018-09-14 16:10:42,736 INFO L78 Accepts]: Start accepts. Automaton has 66891 states and 85107 transitions. Word has length 968 [2018-09-14 16:10:42,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:10:42,737 INFO L480 AbstractCegarLoop]: Abstraction has 66891 states and 85107 transitions. [2018-09-14 16:10:42,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 16:10:42,737 INFO L276 IsEmpty]: Start isEmpty. Operand 66891 states and 85107 transitions. [2018-09-14 16:10:42,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2018-09-14 16:10:42,828 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:10:42,829 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:10:42,830 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:10:42,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1156628930, now seen corresponding path program 1 times [2018-09-14 16:10:42,830 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:10:42,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:10:42,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:10:42,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:10:42,832 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:10:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:10:43,555 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-14 16:10:43,861 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 16:10:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 245 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:10:44,931 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:10:44,931 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 [2018-09-14 16:10:44,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:10:44,939 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:10:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:10:45,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:10:45,945 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-14 16:10:45,945 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:10:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-14 16:10:46,807 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 16:10:46,808 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-09-14 16:10:46,808 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:10:46,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:10:46,809 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:10:46,809 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:10:46,810 INFO L87 Difference]: Start difference. First operand 66891 states and 85107 transitions. Second operand 3 states. [2018-09-14 16:10:52,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:10:52,326 INFO L93 Difference]: Finished difference Result 163516 states and 208853 transitions. [2018-09-14 16:10:52,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:10:52,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1004 [2018-09-14 16:10:52,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:10:52,653 INFO L225 Difference]: With dead ends: 163516 [2018-09-14 16:10:52,654 INFO L226 Difference]: Without dead ends: 96631 [2018-09-14 16:10:52,777 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2014 GetRequests, 2007 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:10:52,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96631 states. [2018-09-14 16:10:54,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96631 to 94951. [2018-09-14 16:10:54,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94951 states. [2018-09-14 16:10:54,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94951 states to 94951 states and 118631 transitions. [2018-09-14 16:10:54,982 INFO L78 Accepts]: Start accepts. Automaton has 94951 states and 118631 transitions. Word has length 1004 [2018-09-14 16:10:54,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:10:54,983 INFO L480 AbstractCegarLoop]: Abstraction has 94951 states and 118631 transitions. [2018-09-14 16:10:54,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:10:54,984 INFO L276 IsEmpty]: Start isEmpty. Operand 94951 states and 118631 transitions. [2018-09-14 16:10:55,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1090 [2018-09-14 16:10:55,099 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:10:55,100 INFO L376 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:10:55,100 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:10:55,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1643634915, now seen corresponding path program 1 times [2018-09-14 16:10:55,101 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:10:55,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:10:55,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:10:55,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:10:55,102 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:10:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:10:55,496 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:10:56,564 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 278 proven. 120 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-09-14 16:10:56,564 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:10:56,564 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:10:56,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:10:56,573 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:10:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:10:56,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:10:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-09-14 16:10:57,900 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:10:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 278 proven. 120 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-09-14 16:10:58,954 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:10:58,955 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 16:10:58,955 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:10:58,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:10:58,956 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:10:58,956 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-14 16:10:58,957 INFO L87 Difference]: Start difference. First operand 94951 states and 118631 transitions. Second operand 5 states. [2018-09-14 16:11:06,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:11:06,074 INFO L93 Difference]: Finished difference Result 190171 states and 240318 transitions. [2018-09-14 16:11:06,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:11:06,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1089 [2018-09-14 16:11:06,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:11:06,318 INFO L225 Difference]: With dead ends: 190171 [2018-09-14 16:11:06,318 INFO L226 Difference]: Without dead ends: 95226 [2018-09-14 16:11:06,453 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2187 GetRequests, 2172 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-14 16:11:06,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95226 states. [2018-09-14 16:11:08,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95226 to 94012. [2018-09-14 16:11:08,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94012 states. [2018-09-14 16:11:08,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94012 states to 94012 states and 115406 transitions. [2018-09-14 16:11:08,790 INFO L78 Accepts]: Start accepts. Automaton has 94012 states and 115406 transitions. Word has length 1089 [2018-09-14 16:11:08,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:11:08,791 INFO L480 AbstractCegarLoop]: Abstraction has 94012 states and 115406 transitions. [2018-09-14 16:11:08,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:11:08,791 INFO L276 IsEmpty]: Start isEmpty. Operand 94012 states and 115406 transitions. [2018-09-14 16:11:08,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1110 [2018-09-14 16:11:08,925 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:11:08,926 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:11:08,926 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:11:08,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1789747738, now seen corresponding path program 1 times [2018-09-14 16:11:08,927 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:11:08,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:11:08,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:11:08,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:11:08,932 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:11:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:11:09,831 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-14 16:11:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 323 proven. 126 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-14 16:11:14,314 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:11:14,314 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:11:14,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:11:14,324 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:11:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:11:14,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:11:15,452 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 468 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-09-14 16:11:15,453 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:11:16,004 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2018-09-14 16:11:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 435 proven. 20 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-09-14 16:11:16,532 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:11:16,533 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 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:11:16,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:11:16,549 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:11:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:11:17,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:11:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 468 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-09-14 16:11:18,717 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:11:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 435 proven. 20 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-09-14 16:11:19,337 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:11:19,338 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 19 [2018-09-14 16:11:19,338 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:11:19,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 16:11:19,340 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 16:11:19,340 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2018-09-14 16:11:19,340 INFO L87 Difference]: Start difference. First operand 94012 states and 115406 transitions. Second operand 13 states. [2018-09-14 16:11:19,704 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2018-09-14 16:11:20,219 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2018-09-14 16:11:20,501 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2018-09-14 16:11:20,683 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-09-14 16:11:21,660 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2018-09-14 16:11:22,051 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2018-09-14 16:11:22,223 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2018-09-14 16:11:22,634 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-09-14 16:11:23,417 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-09-14 16:11:23,784 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2018-09-14 16:11:24,303 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2018-09-14 16:11:24,797 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2018-09-14 16:11:25,178 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2018-09-14 16:11:26,005 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2018-09-14 16:11:26,286 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2018-09-14 16:11:27,298 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2018-09-14 16:11:28,563 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-09-14 16:11:28,913 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2018-09-14 16:11:30,219 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2018-09-14 16:11:30,639 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2018-09-14 16:11:31,659 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-09-14 16:11:36,889 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2018-09-14 16:11:44,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:11:44,901 INFO L93 Difference]: Finished difference Result 190819 states and 242706 transitions. [2018-09-14 16:11:44,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-14 16:11:44,902 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1109 [2018-09-14 16:11:44,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:11:45,168 INFO L225 Difference]: With dead ends: 190819 [2018-09-14 16:11:45,169 INFO L226 Difference]: Without dead ends: 96813 [2018-09-14 16:11:45,280 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4517 GetRequests, 4459 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=730, Invalid=2576, Unknown=0, NotChecked=0, Total=3306 [2018-09-14 16:11:45,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96813 states. [2018-09-14 16:11:46,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96813 to 94737. [2018-09-14 16:11:46,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94737 states. [2018-09-14 16:11:47,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94737 states to 94737 states and 112862 transitions. [2018-09-14 16:11:47,205 INFO L78 Accepts]: Start accepts. Automaton has 94737 states and 112862 transitions. Word has length 1109 [2018-09-14 16:11:47,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:11:47,206 INFO L480 AbstractCegarLoop]: Abstraction has 94737 states and 112862 transitions. [2018-09-14 16:11:47,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-14 16:11:47,206 INFO L276 IsEmpty]: Start isEmpty. Operand 94737 states and 112862 transitions. [2018-09-14 16:11:47,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1388 [2018-09-14 16:11:47,376 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:11:47,377 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:11:47,378 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:11:47,378 INFO L82 PathProgramCache]: Analyzing trace with hash -782336078, now seen corresponding path program 1 times [2018-09-14 16:11:47,379 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:11:47,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:11:47,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:11:47,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:11:47,380 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:11:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:11:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 914 proven. 34 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-09-14 16:11:49,480 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:11:49,480 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:11:49,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:11:49,488 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:11:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:11:49,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:11:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 579 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2018-09-14 16:11:51,238 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:11:52,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 579 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2018-09-14 16:11:52,204 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 16:11:52,205 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-14 16:11:52,205 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:11:52,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:11:52,206 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:11:52,206 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:11:52,207 INFO L87 Difference]: Start difference. First operand 94737 states and 112862 transitions. Second operand 3 states. [2018-09-14 16:11:57,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:11:57,099 INFO L93 Difference]: Finished difference Result 189468 states and 225736 transitions. [2018-09-14 16:11:57,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:11:57,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1387 [2018-09-14 16:11:57,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:11:57,291 INFO L225 Difference]: With dead ends: 189468 [2018-09-14 16:11:57,292 INFO L226 Difference]: Without dead ends: 94737 [2018-09-14 16:11:57,388 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2783 GetRequests, 2773 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:11:57,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94737 states. [2018-09-14 16:11:58,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94737 to 91283. [2018-09-14 16:11:58,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91283 states. [2018-09-14 16:11:58,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91283 states to 91283 states and 105320 transitions. [2018-09-14 16:11:58,748 INFO L78 Accepts]: Start accepts. Automaton has 91283 states and 105320 transitions. Word has length 1387 [2018-09-14 16:11:58,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:11:58,749 INFO L480 AbstractCegarLoop]: Abstraction has 91283 states and 105320 transitions. [2018-09-14 16:11:58,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:11:58,749 INFO L276 IsEmpty]: Start isEmpty. Operand 91283 states and 105320 transitions. [2018-09-14 16:11:58,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1529 [2018-09-14 16:11:58,840 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:11:58,841 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:11:58,841 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:11:58,842 INFO L82 PathProgramCache]: Analyzing trace with hash 528917032, now seen corresponding path program 1 times [2018-09-14 16:11:58,842 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:11:58,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:11:58,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:11:58,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:11:58,843 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:11:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:12:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1582 backedges. 981 proven. 482 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-14 16:12:01,030 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:12:01,030 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:12:01,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:12:01,039 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:12:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:12:01,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:12:02,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1582 backedges. 1148 proven. 2 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2018-09-14 16:12:02,523 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:12:03,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1582 backedges. 1148 proven. 2 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2018-09-14 16:12:03,572 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:12:03,572 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 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:12:03,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:12:03,588 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:12:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:12:04,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:12:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1582 backedges. 1252 proven. 6 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-09-14 16:12:05,476 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:12:06,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1582 backedges. 1254 proven. 4 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-09-14 16:12:06,745 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:12:06,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 12 [2018-09-14 16:12:06,746 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:12:06,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-14 16:12:06,748 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-14 16:12:06,749 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-09-14 16:12:06,749 INFO L87 Difference]: Start difference. First operand 91283 states and 105320 transitions. Second operand 11 states. [2018-09-14 16:12:18,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:12:18,994 INFO L93 Difference]: Finished difference Result 182815 states and 211291 transitions. [2018-09-14 16:12:18,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-14 16:12:18,995 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1528 [2018-09-14 16:12:18,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:12:19,179 INFO L225 Difference]: With dead ends: 182815 [2018-09-14 16:12:19,179 INFO L226 Difference]: Without dead ends: 91538 [2018-09-14 16:12:19,280 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6142 GetRequests, 6113 SyntacticMatches, 11 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2018-09-14 16:12:19,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91538 states. [2018-09-14 16:12:20,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91538 to 90434. [2018-09-14 16:12:20,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90434 states. [2018-09-14 16:12:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90434 states to 90434 states and 99749 transitions. [2018-09-14 16:12:20,310 INFO L78 Accepts]: Start accepts. Automaton has 90434 states and 99749 transitions. Word has length 1528 [2018-09-14 16:12:20,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:12:20,311 INFO L480 AbstractCegarLoop]: Abstraction has 90434 states and 99749 transitions. [2018-09-14 16:12:20,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-14 16:12:20,311 INFO L276 IsEmpty]: Start isEmpty. Operand 90434 states and 99749 transitions. [2018-09-14 16:12:20,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1666 [2018-09-14 16:12:20,411 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:12:20,412 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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, 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] [2018-09-14 16:12:20,413 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:12:20,413 INFO L82 PathProgramCache]: Analyzing trace with hash 999545031, now seen corresponding path program 1 times [2018-09-14 16:12:20,414 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:12:20,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:12:20,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:12:20,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:12:20,415 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:12:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:12:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1562 backedges. 967 proven. 241 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2018-09-14 16:12:23,176 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:12:23,176 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:12:23,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:12:23,185 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:12:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:12:23,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:12:25,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1562 backedges. 1360 proven. 2 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-09-14 16:12:25,095 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:12:26,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1562 backedges. 1203 proven. 68 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-09-14 16:12:26,860 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:12:26,860 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 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:12:26,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:12:26,876 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:12:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:12:28,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:12:29,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1562 backedges. 1360 proven. 2 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-09-14 16:12:29,254 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-09-14 16:12:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1562 backedges. 1203 proven. 68 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-09-14 16:12:31,365 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:12:31,366 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 12 [2018-09-14 16:12:31,366 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:12:31,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-14 16:12:31,369 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-14 16:12:31,369 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-09-14 16:12:31,369 INFO L87 Difference]: Start difference. First operand 90434 states and 99749 transitions. Second operand 11 states. [2018-09-14 16:12:31,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-14 16:12:31,370 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 16:12:31,376 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 16:12:31,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 04:12:31 BoogieIcfgContainer [2018-09-14 16:12:31,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 16:12:31,377 INFO L168 Benchmark]: Toolchain (without parser) took 212611.67 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-09-14 16:12:31,378 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-09-14 16:12:31,379 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2375.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. [2018-09-14 16:12:31,379 INFO L168 Benchmark]: Boogie Procedure Inliner took 156.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-14 16:12:31,380 INFO L168 Benchmark]: Boogie Preprocessor took 593.42 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 848.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. [2018-09-14 16:12:31,381 INFO L168 Benchmark]: RCFGBuilder took 9968.79 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 175.6 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -139.0 MB). Peak memory consumption was 705.2 MB. Max. memory is 7.1 GB. [2018-09-14 16:12:31,382 INFO L168 Benchmark]: TraceAbstraction took 199507.88 ms. Allocated memory was 2.6 GB in the beginning and 4.0 GB in the end (delta: 1.4 GB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: 158.9 kB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-09-14 16:12:31,387 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 2375.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 156.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 593.42 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 848.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9968.79 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 175.6 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -139.0 MB). Peak memory consumption was 705.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199507.88 ms. Allocated memory was 2.6 GB in the beginning and 4.0 GB in the end (delta: 1.4 GB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: 158.9 kB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4724]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4724). Cancelled while BasicCegarLoop was constructing difference of abstraction (90434states) and FLOYD_HOARE automaton (currently 2 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 199.4s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 119.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7397 SDtfs, 43332 SDslu, 2379 SDs, 0 SdLazy, 70164 SolverSat, 22840 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 86.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33374 GetRequests, 33133 SyntacticMatches, 50 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1633 ImplicationChecksByTransitivity, 15.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94951occurred in iteration=8, 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: 13.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 14390 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.5s SsaConstructionTime, 7.4s SatisfiabilityAnalysisTime, 41.2s InterpolantComputationTime, 30280 NumberOfCodeBlocks, 30280 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 46797 ConstructedInterpolants, 0 QuantifiedInterpolants, 118737935 SizeOfPredicates, 19 NumberOfNonLiveVariables, 23324 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 41 InterpolantComputations, 13 PerfectInterpolantSequences, 23905/25326 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/Problem04_label07_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_16-12-31-400.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label07_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_16-12-31-400.csv Completed graceful shutdown