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/Problem03_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 10:15:45,669 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 10:15:45,671 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 10:15:45,683 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 10:15:45,684 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 10:15:45,685 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 10:15:45,686 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 10:15:45,688 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 10:15:45,690 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 10:15:45,691 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 10:15:45,692 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 10:15:45,692 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 10:15:45,693 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 10:15:45,694 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 10:15:45,695 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 10:15:45,696 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 10:15:45,697 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 10:15:45,698 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 10:15:45,700 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 10:15:45,702 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 10:15:45,703 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 10:15:45,704 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 10:15:45,707 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 10:15:45,707 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 10:15:45,707 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 10:15:45,708 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 10:15:45,709 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 10:15:45,710 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 10:15:45,711 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 10:15:45,712 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 10:15:45,712 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 10:15:45,713 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 10:15:45,713 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 10:15:45,713 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 10:15:45,714 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 10:15:45,715 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 10:15:45,715 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 10:15:45,731 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 10:15:45,731 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 10:15:45,732 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 10:15:45,732 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 10:15:45,733 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 10:15:45,733 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 10:15:45,733 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 10:15:45,733 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 10:15:45,733 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 10:15:45,734 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 10:15:45,734 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 10:15:45,734 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 10:15:45,735 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 10:15:45,735 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 10:15:45,735 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 10:15:45,735 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 10:15:45,736 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 10:15:45,736 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 10:15:45,736 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 10:15:45,736 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 10:15:45,737 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 10:15:45,737 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 10:15:45,737 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 10:15:45,737 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 10:15:45,737 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:15:45,738 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 10:15:45,738 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 10:15:45,738 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 10:15:45,738 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 10:15:45,738 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 10:15:45,739 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 10:15:45,739 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 10:15:45,739 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 10:15:45,739 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 10:15:45,798 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 10:15:45,817 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 10:15:45,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 10:15:45,824 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 10:15:45,825 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 10:15:45,826 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label46_true-unreach-call.c [2018-09-18 10:15:46,186 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a5f7ea49/86d0ebd2f6a04a558e8bbd6500b7a380/FLAG52ffad126 [2018-09-18 10:15:46,511 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 10:15:46,515 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label46_true-unreach-call.c [2018-09-18 10:15:46,540 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a5f7ea49/86d0ebd2f6a04a558e8bbd6500b7a380/FLAG52ffad126 [2018-09-18 10:15:46,560 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a5f7ea49/86d0ebd2f6a04a558e8bbd6500b7a380 [2018-09-18 10:15:46,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 10:15:46,579 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 10:15:46,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 10:15:46,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 10:15:46,589 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 10:15:46,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:15:46" (1/1) ... [2018-09-18 10:15:46,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201dfe03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:46, skipping insertion in model container [2018-09-18 10:15:46,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:15:46" (1/1) ... [2018-09-18 10:15:46,607 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 10:15:47,305 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:15:47,325 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 10:15:47,575 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:15:47,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:47 WrapperNode [2018-09-18 10:15:47,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 10:15:47,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 10:15:47,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 10:15:47,638 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 10:15:47,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:47" (1/1) ... [2018-09-18 10:15:47,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:47" (1/1) ... [2018-09-18 10:15:47,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 10:15:47,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 10:15:47,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 10:15:47,806 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 10:15:48,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:47" (1/1) ... [2018-09-18 10:15:48,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:47" (1/1) ... [2018-09-18 10:15:48,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:47" (1/1) ... [2018-09-18 10:15:48,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:47" (1/1) ... [2018-09-18 10:15:48,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:47" (1/1) ... [2018-09-18 10:15:48,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:47" (1/1) ... [2018-09-18 10:15:48,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:47" (1/1) ... [2018-09-18 10:15:48,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 10:15:48,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 10:15:48,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 10:15:48,205 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 10:15:48,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:15:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 10:15:48,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 10:15:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 10:15:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 10:15:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 10:15:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 10:15:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 10:15:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 10:15:53,679 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 10:15:53,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:15:53 BoogieIcfgContainer [2018-09-18 10:15:53,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 10:15:53,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 10:15:53,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 10:15:53,689 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 10:15:53,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 10:15:46" (1/3) ... [2018-09-18 10:15:53,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544d6bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:15:53, skipping insertion in model container [2018-09-18 10:15:53,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:47" (2/3) ... [2018-09-18 10:15:53,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544d6bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:15:53, skipping insertion in model container [2018-09-18 10:15:53,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:15:53" (3/3) ... [2018-09-18 10:15:53,694 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label46_true-unreach-call.c [2018-09-18 10:15:53,705 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 10:15:53,719 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 10:15:53,793 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 10:15:53,794 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 10:15:53,794 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 10:15:53,794 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 10:15:53,795 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 10:15:53,795 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 10:15:53,795 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 10:15:53,795 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 10:15:53,795 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 10:15:53,842 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-09-18 10:15:53,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-09-18 10:15:53,873 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:15:53,875 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] [2018-09-18 10:15:53,876 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:15:53,882 INFO L82 PathProgramCache]: Analyzing trace with hash -869298807, now seen corresponding path program 1 times [2018-09-18 10:15:53,886 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:15:53,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:15:53,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:15:53,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:15:53,947 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:15:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:15:54,878 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-18 10:15:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:15:55,330 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:15:55,330 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 10:15:55,331 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:15:55,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 10:15:55,354 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 10:15:55,355 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 10:15:55,358 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-09-18 10:15:58,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:15:58,799 INFO L93 Difference]: Finished difference Result 1074 states and 1924 transitions. [2018-09-18 10:15:58,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 10:15:58,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 192 [2018-09-18 10:15:58,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:15:58,828 INFO L225 Difference]: With dead ends: 1074 [2018-09-18 10:15:58,828 INFO L226 Difference]: Without dead ends: 756 [2018-09-18 10:15:58,837 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 10:15:58,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2018-09-18 10:15:58,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 520. [2018-09-18 10:15:58,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-09-18 10:15:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 919 transitions. [2018-09-18 10:15:58,935 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 919 transitions. Word has length 192 [2018-09-18 10:15:58,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:15:58,936 INFO L480 AbstractCegarLoop]: Abstraction has 520 states and 919 transitions. [2018-09-18 10:15:58,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 10:15:58,936 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 919 transitions. [2018-09-18 10:15:58,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-09-18 10:15:58,945 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:15:58,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:15:58,946 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:15:58,947 INFO L82 PathProgramCache]: Analyzing trace with hash -593828404, now seen corresponding path program 1 times [2018-09-18 10:15:58,947 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:15:58,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:15:58,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:15:58,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:15:58,949 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:15:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:15:59,441 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:15:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:15:59,528 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:15:59,528 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 10:15:59,528 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:15:59,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:15:59,531 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:15:59,531 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:15:59,532 INFO L87 Difference]: Start difference. First operand 520 states and 919 transitions. Second operand 6 states. [2018-09-18 10:16:03,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:16:03,872 INFO L93 Difference]: Finished difference Result 1482 states and 2700 transitions. [2018-09-18 10:16:03,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:16:03,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 220 [2018-09-18 10:16:03,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:16:03,887 INFO L225 Difference]: With dead ends: 1482 [2018-09-18 10:16:03,887 INFO L226 Difference]: Without dead ends: 968 [2018-09-18 10:16:03,890 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:16:03,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-09-18 10:16:03,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 949. [2018-09-18 10:16:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2018-09-18 10:16:03,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1579 transitions. [2018-09-18 10:16:03,980 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1579 transitions. Word has length 220 [2018-09-18 10:16:03,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:16:03,980 INFO L480 AbstractCegarLoop]: Abstraction has 949 states and 1579 transitions. [2018-09-18 10:16:03,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:16:03,981 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1579 transitions. [2018-09-18 10:16:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-18 10:16:03,986 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:16:03,987 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:16:03,987 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:16:03,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1738232703, now seen corresponding path program 1 times [2018-09-18 10:16:03,988 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:16:03,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:03,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:03,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:03,990 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:16:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:04,383 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:16:04,384 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:16:04,384 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 10:16:04,384 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:16:04,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:16:04,385 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:16:04,385 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:16:04,386 INFO L87 Difference]: Start difference. First operand 949 states and 1579 transitions. Second operand 3 states. [2018-09-18 10:16:06,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:16:06,771 INFO L93 Difference]: Finished difference Result 2535 states and 4260 transitions. [2018-09-18 10:16:06,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:16:06,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 238 [2018-09-18 10:16:06,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:16:06,788 INFO L225 Difference]: With dead ends: 2535 [2018-09-18 10:16:06,788 INFO L226 Difference]: Without dead ends: 1592 [2018-09-18 10:16:06,793 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:16:06,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2018-09-18 10:16:06,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1590. [2018-09-18 10:16:06,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2018-09-18 10:16:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2503 transitions. [2018-09-18 10:16:06,870 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2503 transitions. Word has length 238 [2018-09-18 10:16:06,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:16:06,872 INFO L480 AbstractCegarLoop]: Abstraction has 1590 states and 2503 transitions. [2018-09-18 10:16:06,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:16:06,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2503 transitions. [2018-09-18 10:16:06,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-09-18 10:16:06,882 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:16:06,883 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:16:06,883 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:16:06,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2088350806, now seen corresponding path program 1 times [2018-09-18 10:16:06,884 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:16:06,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:06,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:06,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:06,885 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:16:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:07,178 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:16:07,596 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:16:07,596 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:16:07,597 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:16:07,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:07,616 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:16:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:07,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:16:08,420 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-09-18 10:16:08,420 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:16:08,739 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:16:08,768 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:16:08,769 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 10:16:08,769 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:16:08,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:16:08,770 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:16:08,770 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:16:08,771 INFO L87 Difference]: Start difference. First operand 1590 states and 2503 transitions. Second operand 5 states. [2018-09-18 10:16:09,498 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-09-18 10:16:11,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:16:11,718 INFO L93 Difference]: Finished difference Result 4071 states and 6536 transitions. [2018-09-18 10:16:11,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:16:11,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2018-09-18 10:16:11,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:16:11,735 INFO L225 Difference]: With dead ends: 4071 [2018-09-18 10:16:11,735 INFO L226 Difference]: Without dead ends: 2487 [2018-09-18 10:16:11,745 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 502 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:16:11,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2487 states. [2018-09-18 10:16:11,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2487 to 2428. [2018-09-18 10:16:11,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2428 states. [2018-09-18 10:16:11,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 3453 transitions. [2018-09-18 10:16:11,825 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 3453 transitions. Word has length 254 [2018-09-18 10:16:11,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:16:11,826 INFO L480 AbstractCegarLoop]: Abstraction has 2428 states and 3453 transitions. [2018-09-18 10:16:11,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:16:11,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 3453 transitions. [2018-09-18 10:16:11,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-09-18 10:16:11,836 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:16:11,837 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:16:11,837 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:16:11,837 INFO L82 PathProgramCache]: Analyzing trace with hash -889504680, now seen corresponding path program 1 times [2018-09-18 10:16:11,837 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:16:11,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:11,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:11,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:11,839 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:16:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:16:12,352 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:16:12,352 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:16:12,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:12,369 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:16:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:12,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:16:12,734 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:16:12,735 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:16:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:16:13,485 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:16:13,485 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 [2018-09-18 10:16:13,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:13,517 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:16:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:13,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:16:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:16:14,232 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:16:14,505 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-18 10:16:14,752 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:16:14,755 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:16:14,755 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 14 [2018-09-18 10:16:14,755 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:16:14,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:16:14,757 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:16:14,757 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2018-09-18 10:16:14,758 INFO L87 Difference]: Start difference. First operand 2428 states and 3453 transitions. Second operand 6 states. [2018-09-18 10:16:16,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:16:16,550 INFO L93 Difference]: Finished difference Result 4820 states and 6887 transitions. [2018-09-18 10:16:16,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-18 10:16:16,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 256 [2018-09-18 10:16:16,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:16:16,563 INFO L225 Difference]: With dead ends: 4820 [2018-09-18 10:16:16,563 INFO L226 Difference]: Without dead ends: 2398 [2018-09-18 10:16:16,570 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 1015 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:16:16,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2018-09-18 10:16:16,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2398. [2018-09-18 10:16:16,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2398 states. [2018-09-18 10:16:16,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3349 transitions. [2018-09-18 10:16:16,634 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3349 transitions. Word has length 256 [2018-09-18 10:16:16,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:16:16,634 INFO L480 AbstractCegarLoop]: Abstraction has 2398 states and 3349 transitions. [2018-09-18 10:16:16,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:16:16,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3349 transitions. [2018-09-18 10:16:16,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-09-18 10:16:16,644 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:16:16,644 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, 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] [2018-09-18 10:16:16,645 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:16:16,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1011016294, now seen corresponding path program 1 times [2018-09-18 10:16:16,645 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:16:16,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:16,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:16,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:16,647 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:16:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:17,176 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:16:17,177 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:16:17,177 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 [2018-09-18 10:16:17,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:17,195 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:16:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:17,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:16:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:16:17,676 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:16:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:16:18,022 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:16:18,022 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 [2018-09-18 10:16:18,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:18,046 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:16:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:18,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:16:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:16:18,556 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:16:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:16:18,819 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:16:18,820 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 8 [2018-09-18 10:16:18,820 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:16:18,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-18 10:16:18,821 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-18 10:16:18,821 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-09-18 10:16:18,821 INFO L87 Difference]: Start difference. First operand 2398 states and 3349 transitions. Second operand 7 states. [2018-09-18 10:16:21,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:16:21,920 INFO L93 Difference]: Finished difference Result 8987 states and 13933 transitions. [2018-09-18 10:16:21,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 10:16:21,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2018-09-18 10:16:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:16:21,975 INFO L225 Difference]: With dead ends: 8987 [2018-09-18 10:16:21,975 INFO L226 Difference]: Without dead ends: 6595 [2018-09-18 10:16:21,997 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1116 GetRequests, 1104 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:16:22,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6595 states. [2018-09-18 10:16:22,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6595 to 6445. [2018-09-18 10:16:22,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6445 states. [2018-09-18 10:16:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6445 states to 6445 states and 8893 transitions. [2018-09-18 10:16:22,214 INFO L78 Accepts]: Start accepts. Automaton has 6445 states and 8893 transitions. Word has length 277 [2018-09-18 10:16:22,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:16:22,214 INFO L480 AbstractCegarLoop]: Abstraction has 6445 states and 8893 transitions. [2018-09-18 10:16:22,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-18 10:16:22,214 INFO L276 IsEmpty]: Start isEmpty. Operand 6445 states and 8893 transitions. [2018-09-18 10:16:22,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-09-18 10:16:22,250 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:16:22,250 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 10:16:22,251 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:16:22,251 INFO L82 PathProgramCache]: Analyzing trace with hash -920301257, now seen corresponding path program 1 times [2018-09-18 10:16:22,251 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:16:22,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:22,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:22,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:22,253 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:16:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:23,041 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:16:23,042 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:16:23,042 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 10:16:23,042 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:16:23,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:16:23,043 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:16:23,043 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:16:23,043 INFO L87 Difference]: Start difference. First operand 6445 states and 8893 transitions. Second operand 6 states. [2018-09-18 10:16:25,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:16:25,559 INFO L93 Difference]: Finished difference Result 16079 states and 23471 transitions. [2018-09-18 10:16:25,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-18 10:16:25,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 305 [2018-09-18 10:16:25,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:16:25,629 INFO L225 Difference]: With dead ends: 16079 [2018-09-18 10:16:25,630 INFO L226 Difference]: Without dead ends: 9665 [2018-09-18 10:16:25,660 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:16:25,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9665 states. [2018-09-18 10:16:25,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9665 to 9454. [2018-09-18 10:16:25,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9454 states. [2018-09-18 10:16:25,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9454 states to 9454 states and 13045 transitions. [2018-09-18 10:16:25,967 INFO L78 Accepts]: Start accepts. Automaton has 9454 states and 13045 transitions. Word has length 305 [2018-09-18 10:16:25,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:16:25,967 INFO L480 AbstractCegarLoop]: Abstraction has 9454 states and 13045 transitions. [2018-09-18 10:16:25,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:16:25,968 INFO L276 IsEmpty]: Start isEmpty. Operand 9454 states and 13045 transitions. [2018-09-18 10:16:26,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-09-18 10:16:26,014 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:16:26,014 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-18 10:16:26,014 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:16:26,015 INFO L82 PathProgramCache]: Analyzing trace with hash 499388467, now seen corresponding path program 1 times [2018-09-18 10:16:26,015 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:16:26,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:26,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:26,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:26,016 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:16:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:16:26,570 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:16:26,571 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:16:26,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:26,579 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:16:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:26,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:16:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 20 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:16:27,251 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:16:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:16:27,611 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:16:27,611 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:16:27,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:27,627 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:16:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:28,139 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:16:28,291 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 20 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:16:28,292 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:16:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:16:28,497 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:16:28,498 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4, 4, 4] total 13 [2018-09-18 10:16:28,498 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:16:28,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-18 10:16:28,500 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-18 10:16:28,500 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:16:28,500 INFO L87 Difference]: Start difference. First operand 9454 states and 13045 transitions. Second operand 8 states. [2018-09-18 10:16:33,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:16:33,364 INFO L93 Difference]: Finished difference Result 25059 states and 36630 transitions. [2018-09-18 10:16:33,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-18 10:16:33,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 318 [2018-09-18 10:16:33,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:16:33,438 INFO L225 Difference]: With dead ends: 25059 [2018-09-18 10:16:33,438 INFO L226 Difference]: Without dead ends: 15641 [2018-09-18 10:16:33,475 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1303 GetRequests, 1272 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2018-09-18 10:16:33,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15641 states. [2018-09-18 10:16:33,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15641 to 15187. [2018-09-18 10:16:33,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15187 states. [2018-09-18 10:16:33,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15187 states to 15187 states and 19754 transitions. [2018-09-18 10:16:33,953 INFO L78 Accepts]: Start accepts. Automaton has 15187 states and 19754 transitions. Word has length 318 [2018-09-18 10:16:33,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:16:33,954 INFO L480 AbstractCegarLoop]: Abstraction has 15187 states and 19754 transitions. [2018-09-18 10:16:33,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-18 10:16:33,954 INFO L276 IsEmpty]: Start isEmpty. Operand 15187 states and 19754 transitions. [2018-09-18 10:16:34,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-09-18 10:16:34,032 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:16:34,032 INFO L376 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 10:16:34,032 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:16:34,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1947591065, now seen corresponding path program 1 times [2018-09-18 10:16:34,035 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:16:34,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:34,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:34,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:34,036 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:16:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:34,659 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-18 10:16:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 216 proven. 103 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:16:35,184 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:16:35,184 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 [2018-09-18 10:16:35,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:35,192 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:16:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:35,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:16:36,182 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-09-18 10:16:36,288 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2018-09-18 10:16:36,289 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:16:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 210 proven. 85 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-09-18 10:16:36,721 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:16:36,721 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 6] total 16 [2018-09-18 10:16:36,721 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:16:36,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:16:36,722 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:16:36,722 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2018-09-18 10:16:36,722 INFO L87 Difference]: Start difference. First operand 15187 states and 19754 transitions. Second operand 6 states. [2018-09-18 10:16:39,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:16:39,106 INFO L93 Difference]: Finished difference Result 31533 states and 42265 transitions. [2018-09-18 10:16:39,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-18 10:16:39,119 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 413 [2018-09-18 10:16:39,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:16:39,201 INFO L225 Difference]: With dead ends: 31533 [2018-09-18 10:16:39,202 INFO L226 Difference]: Without dead ends: 16097 [2018-09-18 10:16:39,245 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 842 GetRequests, 819 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2018-09-18 10:16:39,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16097 states. [2018-09-18 10:16:39,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16097 to 15622. [2018-09-18 10:16:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15622 states. [2018-09-18 10:16:39,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15622 states to 15622 states and 20225 transitions. [2018-09-18 10:16:39,719 INFO L78 Accepts]: Start accepts. Automaton has 15622 states and 20225 transitions. Word has length 413 [2018-09-18 10:16:39,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:16:39,719 INFO L480 AbstractCegarLoop]: Abstraction has 15622 states and 20225 transitions. [2018-09-18 10:16:39,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:16:39,719 INFO L276 IsEmpty]: Start isEmpty. Operand 15622 states and 20225 transitions. [2018-09-18 10:16:39,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-09-18 10:16:39,768 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:16:39,768 INFO L376 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 10:16:39,769 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:16:39,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1020677132, now seen corresponding path program 1 times [2018-09-18 10:16:39,769 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:16:39,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:39,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:39,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:39,771 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:16:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 214 proven. 89 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-09-18 10:16:40,633 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:16:40,633 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-09-18 10:16:40,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:40,648 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:16:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:40,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:16:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2018-09-18 10:16:41,442 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:16:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 214 proven. 89 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-09-18 10:16:41,827 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:16:41,828 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 10:16:41,828 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:16:41,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:16:41,828 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:16:41,829 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-09-18 10:16:41,829 INFO L87 Difference]: Start difference. First operand 15622 states and 20225 transitions. Second operand 5 states. [2018-09-18 10:16:43,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:16:43,985 INFO L93 Difference]: Finished difference Result 42165 states and 55365 transitions. [2018-09-18 10:16:43,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 10:16:43,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 415 [2018-09-18 10:16:43,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:16:44,262 INFO L225 Difference]: With dead ends: 42165 [2018-09-18 10:16:44,262 INFO L226 Difference]: Without dead ends: 26564 [2018-09-18 10:16:44,289 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 837 GetRequests, 825 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-09-18 10:16:44,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26564 states. [2018-09-18 10:16:44,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26564 to 25838. [2018-09-18 10:16:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25838 states. [2018-09-18 10:16:44,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25838 states to 25838 states and 33192 transitions. [2018-09-18 10:16:44,860 INFO L78 Accepts]: Start accepts. Automaton has 25838 states and 33192 transitions. Word has length 415 [2018-09-18 10:16:44,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:16:44,862 INFO L480 AbstractCegarLoop]: Abstraction has 25838 states and 33192 transitions. [2018-09-18 10:16:44,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:16:44,862 INFO L276 IsEmpty]: Start isEmpty. Operand 25838 states and 33192 transitions. [2018-09-18 10:16:44,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-09-18 10:16:44,916 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:16:44,917 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 10:16:44,917 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:16:44,917 INFO L82 PathProgramCache]: Analyzing trace with hash -42916040, now seen corresponding path program 1 times [2018-09-18 10:16:44,918 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:16:44,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:44,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:44,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:44,919 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:16:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 228 proven. 36 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-09-18 10:16:45,382 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:16:45,382 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 [2018-09-18 10:16:45,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:45,391 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:16:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:45,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:16:45,777 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2018-09-18 10:16:45,777 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:16:45,959 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 228 proven. 36 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-09-18 10:16:45,981 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:16:45,982 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 11 [2018-09-18 10:16:45,982 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:16:45,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:16:45,982 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:16:45,983 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-18 10:16:45,983 INFO L87 Difference]: Start difference. First operand 25838 states and 33192 transitions. Second operand 5 states. [2018-09-18 10:16:48,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:16:48,144 INFO L93 Difference]: Finished difference Result 51113 states and 66080 transitions. [2018-09-18 10:16:48,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:16:48,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 432 [2018-09-18 10:16:48,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:16:48,229 INFO L225 Difference]: With dead ends: 51113 [2018-09-18 10:16:48,229 INFO L226 Difference]: Without dead ends: 25217 [2018-09-18 10:16:48,277 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 858 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-09-18 10:16:48,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25217 states. [2018-09-18 10:16:49,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25217 to 24652. [2018-09-18 10:16:49,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24652 states. [2018-09-18 10:16:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24652 states to 24652 states and 30933 transitions. [2018-09-18 10:16:49,227 INFO L78 Accepts]: Start accepts. Automaton has 24652 states and 30933 transitions. Word has length 432 [2018-09-18 10:16:49,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:16:49,228 INFO L480 AbstractCegarLoop]: Abstraction has 24652 states and 30933 transitions. [2018-09-18 10:16:49,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:16:49,228 INFO L276 IsEmpty]: Start isEmpty. Operand 24652 states and 30933 transitions. [2018-09-18 10:16:49,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-09-18 10:16:49,270 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:16:49,271 INFO L376 BasicCegarLoop]: trace histogram [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, 2, 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] [2018-09-18 10:16:49,271 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:16:49,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1601857737, now seen corresponding path program 1 times [2018-09-18 10:16:49,271 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:16:49,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:49,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:49,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:49,273 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:16:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:49,654 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 239 proven. 119 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-18 10:16:49,654 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:16:49,654 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 [2018-09-18 10:16:49,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:49,663 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:16:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:49,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:16:50,175 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-09-18 10:16:50,175 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:16:50,525 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 241 proven. 108 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-09-18 10:16:50,548 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:16:50,549 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 10:16:50,549 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:16:50,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:16:50,550 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:16:50,550 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-09-18 10:16:50,550 INFO L87 Difference]: Start difference. First operand 24652 states and 30933 transitions. Second operand 5 states. [2018-09-18 10:16:51,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:16:51,433 INFO L93 Difference]: Finished difference Result 59781 states and 77029 transitions. [2018-09-18 10:16:51,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 10:16:51,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 434 [2018-09-18 10:16:51,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:16:51,584 INFO L225 Difference]: With dead ends: 59781 [2018-09-18 10:16:51,584 INFO L226 Difference]: Without dead ends: 41887 [2018-09-18 10:16:51,626 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 877 GetRequests, 863 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-18 10:16:51,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41887 states. [2018-09-18 10:16:52,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41887 to 41415. [2018-09-18 10:16:52,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41415 states. [2018-09-18 10:16:53,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41415 states to 41415 states and 51989 transitions. [2018-09-18 10:16:53,061 INFO L78 Accepts]: Start accepts. Automaton has 41415 states and 51989 transitions. Word has length 434 [2018-09-18 10:16:53,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:16:53,062 INFO L480 AbstractCegarLoop]: Abstraction has 41415 states and 51989 transitions. [2018-09-18 10:16:53,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:16:53,062 INFO L276 IsEmpty]: Start isEmpty. Operand 41415 states and 51989 transitions. [2018-09-18 10:16:53,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2018-09-18 10:16:53,123 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:16:53,123 INFO L376 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:16:53,124 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:16:53,124 INFO L82 PathProgramCache]: Analyzing trace with hash 2124476941, now seen corresponding path program 1 times [2018-09-18 10:16:53,124 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:16:53,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:53,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:53,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:53,126 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:16:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 268 proven. 14 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2018-09-18 10:16:53,643 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:16:53,643 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:16:53,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:53,657 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:16:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:53,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:16:54,061 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-09-18 10:16:54,061 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:16:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 264 proven. 4 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-09-18 10:16:54,234 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:16:54,235 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 7 [2018-09-18 10:16:54,235 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:16:54,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:16:54,235 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:16:54,235 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-18 10:16:54,236 INFO L87 Difference]: Start difference. First operand 41415 states and 51989 transitions. Second operand 3 states. [2018-09-18 10:16:55,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:16:55,317 INFO L93 Difference]: Finished difference Result 76060 states and 95393 transitions. [2018-09-18 10:16:55,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:16:55,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 457 [2018-09-18 10:16:55,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:16:55,423 INFO L225 Difference]: With dead ends: 76060 [2018-09-18 10:16:55,423 INFO L226 Difference]: Without dead ends: 41397 [2018-09-18 10:16:55,475 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 913 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-18 10:16:55,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41397 states. [2018-09-18 10:16:56,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41397 to 41397. [2018-09-18 10:16:56,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41397 states. [2018-09-18 10:16:56,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41397 states to 41397 states and 51951 transitions. [2018-09-18 10:16:56,302 INFO L78 Accepts]: Start accepts. Automaton has 41397 states and 51951 transitions. Word has length 457 [2018-09-18 10:16:56,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:16:56,303 INFO L480 AbstractCegarLoop]: Abstraction has 41397 states and 51951 transitions. [2018-09-18 10:16:56,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:16:56,303 INFO L276 IsEmpty]: Start isEmpty. Operand 41397 states and 51951 transitions. [2018-09-18 10:16:56,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-09-18 10:16:56,363 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:16:56,364 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, 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, 2, 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] [2018-09-18 10:16:56,364 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:16:56,364 INFO L82 PathProgramCache]: Analyzing trace with hash 329226487, now seen corresponding path program 1 times [2018-09-18 10:16:56,364 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:16:56,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:56,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:56,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:16:56,365 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:16:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 319 proven. 59 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-18 10:16:57,163 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:16:57,164 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 [2018-09-18 10:16:57,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:57,582 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:16:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:57,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:16:58,027 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 406 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 10:16:58,028 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:16:58,315 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 410 proven. 6 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 10:16:58,337 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:16:58,337 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 [2018-09-18 10:16:58,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:16:58,355 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:16:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:16:59,046 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:16:59,217 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 406 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 10:16:59,217 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:16:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 410 proven. 6 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 10:16:59,476 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:16:59,476 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-18 10:16:59,476 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:16:59,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:16:59,477 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:16:59,478 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:16:59,478 INFO L87 Difference]: Start difference. First operand 41397 states and 51951 transitions. Second operand 9 states. [2018-09-18 10:17:08,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:17:08,375 INFO L93 Difference]: Finished difference Result 143258 states and 196759 transitions. [2018-09-18 10:17:08,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-18 10:17:08,375 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 466 [2018-09-18 10:17:08,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:17:08,905 INFO L225 Difference]: With dead ends: 143258 [2018-09-18 10:17:08,906 INFO L226 Difference]: Without dead ends: 108566 [2018-09-18 10:17:09,064 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1926 GetRequests, 1879 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2018-09-18 10:17:09,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108566 states. [2018-09-18 10:17:11,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108566 to 103295. [2018-09-18 10:17:11,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103295 states. [2018-09-18 10:17:12,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103295 states to 103295 states and 129216 transitions. [2018-09-18 10:17:12,513 INFO L78 Accepts]: Start accepts. Automaton has 103295 states and 129216 transitions. Word has length 466 [2018-09-18 10:17:12,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:17:12,514 INFO L480 AbstractCegarLoop]: Abstraction has 103295 states and 129216 transitions. [2018-09-18 10:17:12,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:17:12,514 INFO L276 IsEmpty]: Start isEmpty. Operand 103295 states and 129216 transitions. [2018-09-18 10:17:12,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2018-09-18 10:17:12,698 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:17:12,699 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 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, 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] [2018-09-18 10:17:12,699 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:17:12,700 INFO L82 PathProgramCache]: Analyzing trace with hash -165506139, now seen corresponding path program 1 times [2018-09-18 10:17:12,700 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:17:12,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:17:12,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:17:12,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:17:12,701 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:17:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:17:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 403 proven. 226 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-09-18 10:17:13,399 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:17:13,399 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:17:13,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:17:13,408 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:17:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:17:13,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:17:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 493 proven. 2 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-09-18 10:17:14,121 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:17:14,338 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 403 proven. 44 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-09-18 10:17:14,360 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:17:14,360 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 17 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 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:17:14,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:17:14,378 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:17:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:17:15,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:17:15,503 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 493 proven. 2 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-09-18 10:17:15,503 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:17:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 403 proven. 44 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-09-18 10:17:16,146 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:17:16,147 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 16 [2018-09-18 10:17:16,147 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:17:16,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-18 10:17:16,148 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-18 10:17:16,148 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-09-18 10:17:16,149 INFO L87 Difference]: Start difference. First operand 103295 states and 129216 transitions. Second operand 14 states. [2018-09-18 10:17:37,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:17:37,932 INFO L93 Difference]: Finished difference Result 669598 states and 888019 transitions. [2018-09-18 10:17:37,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-18 10:17:37,932 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 550 [2018-09-18 10:17:37,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:17:40,175 INFO L225 Difference]: With dead ends: 669598 [2018-09-18 10:17:40,176 INFO L226 Difference]: Without dead ends: 566322 [2018-09-18 10:17:40,524 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2312 GetRequests, 2238 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1777 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1006, Invalid=4250, Unknown=0, NotChecked=0, Total=5256 [2018-09-18 10:17:40,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566322 states. [2018-09-18 10:18:01,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566322 to 554310. [2018-09-18 10:18:01,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554310 states. [2018-09-18 10:18:04,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554310 states to 554310 states and 714322 transitions. [2018-09-18 10:18:04,450 INFO L78 Accepts]: Start accepts. Automaton has 554310 states and 714322 transitions. Word has length 550 [2018-09-18 10:18:04,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:18:04,451 INFO L480 AbstractCegarLoop]: Abstraction has 554310 states and 714322 transitions. [2018-09-18 10:18:04,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-18 10:18:04,451 INFO L276 IsEmpty]: Start isEmpty. Operand 554310 states and 714322 transitions. [2018-09-18 10:18:08,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2018-09-18 10:18:08,006 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:18:08,006 INFO L376 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 10:18:08,007 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:18:08,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1796346157, now seen corresponding path program 1 times [2018-09-18 10:18:08,007 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:18:08,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:18:08,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:18:08,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:18:08,008 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:18:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:18:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 371 proven. 30 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2018-09-18 10:18:08,591 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:18:08,591 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:18:08,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:18:08,599 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:18:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:18:08,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:18:09,221 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 584 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-09-18 10:18:09,222 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:18:09,470 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 584 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-09-18 10:18:09,492 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:18:09,492 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 19 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 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:18:10,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:18:10,108 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:18:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:18:10,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:18:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 463 proven. 236 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-18 10:18:11,119 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:18:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 584 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-09-18 10:18:11,365 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:18:11,366 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 6, 5] total 13 [2018-09-18 10:18:11,366 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:18:11,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-18 10:18:11,367 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-18 10:18:11,367 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:18:11,367 INFO L87 Difference]: Start difference. First operand 554310 states and 714322 transitions. Second operand 11 states. Received shutdown request... [2018-09-18 10:19:16,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-18 10:19:16,328 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 10:19:16,334 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 10:19:16,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 10:19:16 BoogieIcfgContainer [2018-09-18 10:19:16,335 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 10:19:16,336 INFO L168 Benchmark]: Toolchain (without parser) took 209760.01 ms. Allocated memory was 1.5 GB in the beginning and 6.5 GB in the end (delta: 5.0 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 4.3 GB. Max. memory is 7.1 GB. [2018-09-18 10:19:16,337 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 10:19:16,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1057.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-09-18 10:19:16,338 INFO L168 Benchmark]: Boogie Procedure Inliner took 167.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-18 10:19:16,339 INFO L168 Benchmark]: Boogie Preprocessor took 398.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -910.4 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. [2018-09-18 10:19:16,340 INFO L168 Benchmark]: RCFGBuilder took 5477.88 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 256.7 MB). Peak memory consumption was 256.7 MB. Max. memory is 7.1 GB. [2018-09-18 10:19:16,340 INFO L168 Benchmark]: TraceAbstraction took 202650.98 ms. Allocated memory was 2.3 GB in the beginning and 6.5 GB in the end (delta: 4.2 GB). Free memory was 2.0 GB in the beginning and 3.5 GB in the end (delta: -1.6 GB). Peak memory consumption was 4.1 GB. Max. memory is 7.1 GB. [2018-09-18 10:19:16,345 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1057.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 167.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 398.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -910.4 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5477.88 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 256.7 MB). Peak memory consumption was 256.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202650.98 ms. Allocated memory was 2.3 GB in the beginning and 6.5 GB in the end (delta: 4.2 GB). Free memory was 2.0 GB in the beginning and 3.5 GB in the end (delta: -1.6 GB). Peak memory consumption was 4.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1590]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1590). Cancelled while BasicCegarLoop was constructing difference of abstraction (554310states) and FLOYD_HOARE automaton (currently 42 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (1603496 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 202.5s OverallTime, 16 OverallIterations, 7 TraceHistogramMax, 134.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3050 SDtfs, 27163 SDslu, 4672 SDs, 0 SdLazy, 33324 SolverSat, 8028 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14855 GetRequests, 14524 SyntacticMatches, 40 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3175 ImplicationChecksByTransitivity, 12.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=554310occurred in iteration=15, 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: 33.0s AutomataMinimizationTime, 15 MinimizatonAttempts, 20652 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.4s SsaConstructionTime, 6.4s SatisfiabilityAnalysisTime, 19.4s InterpolantComputationTime, 13016 NumberOfCodeBlocks, 13016 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 20203 ConstructedInterpolants, 0 QuantifiedInterpolants, 16559978 SizeOfPredicates, 26 NumberOfNonLiveVariables, 25568 ConjunctsInSsa, 140 ConjunctsInUnsatCore, 52 InterpolantComputations, 10 PerfectInterpolantSequences, 15773/17415 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/Problem03_label46_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_10-19-16-362.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label46_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_10-19-16-362.csv Completed graceful shutdown