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-dace188-m [2018-09-14 16:05:22,835 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 16:05:22,837 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 16:05:22,852 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 16:05:22,852 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 16:05:22,855 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 16:05:22,856 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 16:05:22,859 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 16:05:22,861 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 16:05:22,862 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 16:05:22,870 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 16:05:22,871 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 16:05:22,872 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 16:05:22,874 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 16:05:22,876 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 16:05:22,877 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 16:05:22,879 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 16:05:22,883 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 16:05:22,887 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 16:05:22,890 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 16:05:22,891 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 16:05:22,893 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 16:05:22,895 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 16:05:22,895 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 16:05:22,895 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 16:05:22,896 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 16:05:22,897 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 16:05:22,898 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 16:05:22,899 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 16:05:22,901 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 16:05:22,901 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 16:05:22,902 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 16:05:22,902 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 16:05:22,902 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 16:05:22,903 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 16:05:22,904 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 16:05:22,906 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 16:05:22,926 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 16:05:22,926 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 16:05:22,927 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 16:05:22,927 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 16:05:22,931 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 16:05:22,931 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 16:05:22,931 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 16:05:22,932 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 16:05:22,932 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 16:05:22,932 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 16:05:22,932 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 16:05:22,934 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 16:05:22,934 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 16:05:22,934 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 16:05:22,934 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 16:05:22,934 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 16:05:22,935 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 16:05:22,935 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 16:05:22,935 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 16:05:22,935 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 16:05:22,937 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 16:05:22,937 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 16:05:22,937 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 16:05:22,937 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 16:05:22,938 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 16:05:22,938 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 16:05:22,938 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 16:05:22,938 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 16:05:22,938 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 16:05:22,938 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 16:05:22,939 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 16:05:22,939 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 16:05:22,939 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 16:05:22,992 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 16:05:23,009 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 16:05:23,016 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 16:05:23,018 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 16:05:23,018 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 16:05:23,019 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label46_true-unreach-call.c [2018-09-14 16:05:23,378 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5b4b165/62c35eab9eff453aa9e7e1962438fc03/FLAGee1417323 [2018-09-14 16:05:23,743 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 16:05:23,745 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label46_true-unreach-call.c [2018-09-14 16:05:23,767 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5b4b165/62c35eab9eff453aa9e7e1962438fc03/FLAGee1417323 [2018-09-14 16:05:23,789 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5b4b165/62c35eab9eff453aa9e7e1962438fc03 [2018-09-14 16:05:23,801 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 16:05:23,805 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 16:05:23,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 16:05:23,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 16:05:23,816 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 16:05:23,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:05:23" (1/1) ... [2018-09-14 16:05:23,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17281938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:05:23, skipping insertion in model container [2018-09-14 16:05:23,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:05:23" (1/1) ... [2018-09-14 16:05:23,835 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 16:05:24,659 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:05:24,681 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 16:05:24,951 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:05:25,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:05:25 WrapperNode [2018-09-14 16:05:25,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 16:05:25,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 16:05:25,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 16:05:25,020 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 16:05:25,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:05:25" (1/1) ... [2018-09-14 16:05:25,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:05:25" (1/1) ... [2018-09-14 16:05:25,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 16:05:25,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 16:05:25,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 16:05:25,197 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 16:05:25,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:05:25" (1/1) ... [2018-09-14 16:05:25,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:05:25" (1/1) ... [2018-09-14 16:05:25,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:05:25" (1/1) ... [2018-09-14 16:05:25,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:05:25" (1/1) ... [2018-09-14 16:05:25,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:05:25" (1/1) ... [2018-09-14 16:05:25,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:05:25" (1/1) ... [2018-09-14 16:05:25,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:05:25" (1/1) ... [2018-09-14 16:05:25,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 16:05:25,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 16:05:25,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 16:05:25,593 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 16:05:25,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:05:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 16:05:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 16:05:25,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 16:05:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 16:05:25,675 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 16:05:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 16:05:25,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 16:05:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 16:05:25,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 16:05:30,867 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 16:05:30,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:05:30 BoogieIcfgContainer [2018-09-14 16:05:30,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 16:05:30,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 16:05:30,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 16:05:30,874 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 16:05:30,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 04:05:23" (1/3) ... [2018-09-14 16:05:30,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30bbaf5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:05:30, skipping insertion in model container [2018-09-14 16:05:30,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:05:25" (2/3) ... [2018-09-14 16:05:30,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30bbaf5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:05:30, skipping insertion in model container [2018-09-14 16:05:30,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:05:30" (3/3) ... [2018-09-14 16:05:30,879 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label46_true-unreach-call.c [2018-09-14 16:05:30,890 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 16:05:30,901 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 16:05:30,971 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 16:05:30,972 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 16:05:30,972 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 16:05:30,973 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 16:05:30,973 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 16:05:30,973 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 16:05:30,973 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 16:05:30,973 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 16:05:30,973 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 16:05:31,022 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-09-14 16:05:31,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-09-14 16:05:31,051 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:05:31,056 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] [2018-09-14 16:05:31,057 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:05:31,064 INFO L82 PathProgramCache]: Analyzing trace with hash -869298807, now seen corresponding path program 1 times [2018-09-14 16:05:31,068 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:05:31,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:05:31,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:05:31,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:05:31,134 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:05:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:05:32,211 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-14 16:05:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:05:32,527 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:05:32,527 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 16:05:32,527 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:05:32,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 16:05:32,544 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 16:05:32,545 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 16:05:32,547 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-09-14 16:05:36,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:05:36,049 INFO L93 Difference]: Finished difference Result 1074 states and 1924 transitions. [2018-09-14 16:05:36,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 16:05:36,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 192 [2018-09-14 16:05:36,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:05:36,078 INFO L225 Difference]: With dead ends: 1074 [2018-09-14 16:05:36,078 INFO L226 Difference]: Without dead ends: 756 [2018-09-14 16:05:36,086 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 [2018-09-14 16:05:36,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2018-09-14 16:05:36,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 520. [2018-09-14 16:05:36,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-09-14 16:05:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 919 transitions. [2018-09-14 16:05:36,219 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 919 transitions. Word has length 192 [2018-09-14 16:05:36,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:05:36,221 INFO L480 AbstractCegarLoop]: Abstraction has 520 states and 919 transitions. [2018-09-14 16:05:36,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 16:05:36,221 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 919 transitions. [2018-09-14 16:05:36,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-09-14 16:05:36,237 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:05:36,237 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] [2018-09-14 16:05:36,238 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:05:36,238 INFO L82 PathProgramCache]: Analyzing trace with hash -593828404, now seen corresponding path program 1 times [2018-09-14 16:05:36,238 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:05:36,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:05:36,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:05:36,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:05:36,240 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:05:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:05:36,584 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:05:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:05:36,655 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:05:36,655 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:05:36,655 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:05:36,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:05:36,657 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:05:36,658 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:05:36,658 INFO L87 Difference]: Start difference. First operand 520 states and 919 transitions. Second operand 6 states. [2018-09-14 16:05:40,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:05:40,087 INFO L93 Difference]: Finished difference Result 1482 states and 2700 transitions. [2018-09-14 16:05:40,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:05:40,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 220 [2018-09-14 16:05:40,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:05:40,097 INFO L225 Difference]: With dead ends: 1482 [2018-09-14 16:05:40,098 INFO L226 Difference]: Without dead ends: 968 [2018-09-14 16:05:40,101 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 [2018-09-14 16:05:40,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-09-14 16:05:40,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 949. [2018-09-14 16:05:40,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2018-09-14 16:05:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1579 transitions. [2018-09-14 16:05:40,177 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1579 transitions. Word has length 220 [2018-09-14 16:05:40,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:05:40,177 INFO L480 AbstractCegarLoop]: Abstraction has 949 states and 1579 transitions. [2018-09-14 16:05:40,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:05:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1579 transitions. [2018-09-14 16:05:40,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-14 16:05:40,184 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:05:40,184 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] [2018-09-14 16:05:40,185 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:05:40,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1738232703, now seen corresponding path program 1 times [2018-09-14 16:05:40,185 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:05:40,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:05:40,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:05:40,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:05:40,187 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:05:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:05:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:05:40,646 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:05:40,646 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 16:05:40,646 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:05:40,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:05:40,647 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:05:40,647 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:05:40,648 INFO L87 Difference]: Start difference. First operand 949 states and 1579 transitions. Second operand 3 states. [2018-09-14 16:05:43,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:05:43,523 INFO L93 Difference]: Finished difference Result 2535 states and 4260 transitions. [2018-09-14 16:05:43,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:05:43,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 238 [2018-09-14 16:05:43,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:05:43,543 INFO L225 Difference]: With dead ends: 2535 [2018-09-14 16:05:43,545 INFO L226 Difference]: Without dead ends: 1592 [2018-09-14 16:05:43,550 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 [2018-09-14 16:05:43,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2018-09-14 16:05:43,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1590. [2018-09-14 16:05:43,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2018-09-14 16:05:43,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2503 transitions. [2018-09-14 16:05:43,621 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2503 transitions. Word has length 238 [2018-09-14 16:05:43,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:05:43,626 INFO L480 AbstractCegarLoop]: Abstraction has 1590 states and 2503 transitions. [2018-09-14 16:05:43,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:05:43,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2503 transitions. [2018-09-14 16:05:43,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-09-14 16:05:43,638 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:05:43,638 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] [2018-09-14 16:05:43,638 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:05:43,639 INFO L82 PathProgramCache]: Analyzing trace with hash -2088350806, now seen corresponding path program 1 times [2018-09-14 16:05:43,639 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:05:43,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:05:43,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:05:43,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:05:43,641 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:05:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:05:43,933 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:05:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:05:44,017 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:05:44,017 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:05:44,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:05:44,028 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:05:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:05:44,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:05:44,849 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-09-14 16:05:44,850 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:05:45,093 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 16:05:45,196 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 16:05:45,456 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:05:45,479 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:05:45,480 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 16:05:45,480 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:05:45,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:05:45,480 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:05:45,481 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-14 16:05:45,481 INFO L87 Difference]: Start difference. First operand 1590 states and 2503 transitions. Second operand 5 states. [2018-09-14 16:05:46,304 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-09-14 16:05:48,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:05:48,507 INFO L93 Difference]: Finished difference Result 4071 states and 6536 transitions. [2018-09-14 16:05:48,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:05:48,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2018-09-14 16:05:48,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:05:48,527 INFO L225 Difference]: With dead ends: 4071 [2018-09-14 16:05:48,527 INFO L226 Difference]: Without dead ends: 2487 [2018-09-14 16:05:48,537 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 502 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-14 16:05:48,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2487 states. [2018-09-14 16:05:48,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2487 to 2428. [2018-09-14 16:05:48,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2428 states. [2018-09-14 16:05:48,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 3453 transitions. [2018-09-14 16:05:48,633 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 3453 transitions. Word has length 254 [2018-09-14 16:05:48,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:05:48,633 INFO L480 AbstractCegarLoop]: Abstraction has 2428 states and 3453 transitions. [2018-09-14 16:05:48,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:05:48,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 3453 transitions. [2018-09-14 16:05:48,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-09-14 16:05:48,644 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:05:48,644 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] [2018-09-14 16:05:48,644 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:05:48,645 INFO L82 PathProgramCache]: Analyzing trace with hash -889504680, now seen corresponding path program 1 times [2018-09-14 16:05:48,645 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:05:48,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:05:48,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:05:48,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:05:48,646 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:05:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:05:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:05:48,965 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:05:48,965 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:05:48,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:05:48,973 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:05:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:05:49,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:05:49,236 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:05:49,236 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:05:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:05:49,466 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:05:49,466 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:05:49,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:05:49,485 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:05:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:05:49,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:05:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:05:50,386 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:05:50,724 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:05:50,727 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:05:50,727 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 14 [2018-09-14 16:05:50,727 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:05:50,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:05:50,730 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:05:50,730 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2018-09-14 16:05:50,731 INFO L87 Difference]: Start difference. First operand 2428 states and 3453 transitions. Second operand 6 states. [2018-09-14 16:05:52,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:05:52,614 INFO L93 Difference]: Finished difference Result 4820 states and 6887 transitions. [2018-09-14 16:05:52,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 16:05:52,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 256 [2018-09-14 16:05:52,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:05:52,627 INFO L225 Difference]: With dead ends: 4820 [2018-09-14 16:05:52,628 INFO L226 Difference]: Without dead ends: 2398 [2018-09-14 16:05:52,636 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 1015 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2018-09-14 16:05:52,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2018-09-14 16:05:52,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2398. [2018-09-14 16:05:52,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2398 states. [2018-09-14 16:05:52,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3349 transitions. [2018-09-14 16:05:52,703 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3349 transitions. Word has length 256 [2018-09-14 16:05:52,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:05:52,704 INFO L480 AbstractCegarLoop]: Abstraction has 2398 states and 3349 transitions. [2018-09-14 16:05:52,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:05:52,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3349 transitions. [2018-09-14 16:05:52,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-09-14 16:05:52,715 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:05:52,715 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] [2018-09-14 16:05:52,715 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:05:52,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1011016294, now seen corresponding path program 1 times [2018-09-14 16:05:52,716 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:05:52,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:05:52,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:05:52,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:05:52,718 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:05:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:05:53,112 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:05:53,112 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:05:53,113 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:05:53,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:05:53,121 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:05:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:05:53,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:05:53,593 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:05:53,594 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:05:54,176 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:05:54,214 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:05:54,214 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:05:54,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:05:54,246 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:05:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:05:54,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:05:54,793 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:05:54,794 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:05:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:05:55,315 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:05:55,315 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 8 [2018-09-14 16:05:55,315 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:05:55,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 16:05:55,316 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 16:05:55,316 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-09-14 16:05:55,317 INFO L87 Difference]: Start difference. First operand 2398 states and 3349 transitions. Second operand 7 states. [2018-09-14 16:05:58,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:05:58,688 INFO L93 Difference]: Finished difference Result 8987 states and 13933 transitions. [2018-09-14 16:05:58,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 16:05:58,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2018-09-14 16:05:58,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:05:58,742 INFO L225 Difference]: With dead ends: 8987 [2018-09-14 16:05:58,742 INFO L226 Difference]: Without dead ends: 6595 [2018-09-14 16:05:58,768 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1116 GetRequests, 1104 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-09-14 16:05:58,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6595 states. [2018-09-14 16:05:58,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6595 to 6445. [2018-09-14 16:05:58,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6445 states. [2018-09-14 16:05:58,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6445 states to 6445 states and 8893 transitions. [2018-09-14 16:05:58,976 INFO L78 Accepts]: Start accepts. Automaton has 6445 states and 8893 transitions. Word has length 277 [2018-09-14 16:05:58,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:05:58,977 INFO L480 AbstractCegarLoop]: Abstraction has 6445 states and 8893 transitions. [2018-09-14 16:05:58,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 16:05:58,977 INFO L276 IsEmpty]: Start isEmpty. Operand 6445 states and 8893 transitions. [2018-09-14 16:05:59,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-09-14 16:05:59,011 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:05:59,012 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] [2018-09-14 16:05:59,012 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:05:59,012 INFO L82 PathProgramCache]: Analyzing trace with hash -920301257, now seen corresponding path program 1 times [2018-09-14 16:05:59,012 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:05:59,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:05:59,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:05:59,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:05:59,014 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:05:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:05:59,347 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:05:59,348 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:05:59,348 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:05:59,348 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:05:59,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:05:59,349 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:05:59,349 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:05:59,349 INFO L87 Difference]: Start difference. First operand 6445 states and 8893 transitions. Second operand 6 states. [2018-09-14 16:06:01,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:06:01,913 INFO L93 Difference]: Finished difference Result 16079 states and 23471 transitions. [2018-09-14 16:06:01,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-14 16:06:01,913 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 305 [2018-09-14 16:06:01,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:06:01,984 INFO L225 Difference]: With dead ends: 16079 [2018-09-14 16:06:01,984 INFO L226 Difference]: Without dead ends: 9665 [2018-09-14 16:06:02,026 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:06:02,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9665 states. [2018-09-14 16:06:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9665 to 9454. [2018-09-14 16:06:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9454 states. [2018-09-14 16:06:02,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9454 states to 9454 states and 13045 transitions. [2018-09-14 16:06:02,356 INFO L78 Accepts]: Start accepts. Automaton has 9454 states and 13045 transitions. Word has length 305 [2018-09-14 16:06:02,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:06:02,357 INFO L480 AbstractCegarLoop]: Abstraction has 9454 states and 13045 transitions. [2018-09-14 16:06:02,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:06:02,357 INFO L276 IsEmpty]: Start isEmpty. Operand 9454 states and 13045 transitions. [2018-09-14 16:06:02,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-09-14 16:06:02,400 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:06:02,401 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] [2018-09-14 16:06:02,401 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:06:02,401 INFO L82 PathProgramCache]: Analyzing trace with hash 499388467, now seen corresponding path program 1 times [2018-09-14 16:06:02,402 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:06:02,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:06:02,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:02,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:06:02,404 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:06:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:03,299 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:06:03,299 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:06:03,300 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:06:03,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:03,313 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:06:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:03,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:06:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 20 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:06:03,635 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:06:03,868 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:06:03,891 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:06:03,891 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 [2018-09-14 16:06:03,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:03,906 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:06:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:04,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:06:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 20 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:06:04,516 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:06:04,711 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:06:04,713 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:06:04,714 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4, 4, 4] total 13 [2018-09-14 16:06:04,714 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:06:04,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-14 16:06:04,716 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-14 16:06:04,716 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-09-14 16:06:04,717 INFO L87 Difference]: Start difference. First operand 9454 states and 13045 transitions. Second operand 8 states. [2018-09-14 16:06:10,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:06:10,030 INFO L93 Difference]: Finished difference Result 25059 states and 36630 transitions. [2018-09-14 16:06:10,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-14 16:06:10,031 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 318 [2018-09-14 16:06:10,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:06:10,110 INFO L225 Difference]: With dead ends: 25059 [2018-09-14 16:06:10,111 INFO L226 Difference]: Without dead ends: 15641 [2018-09-14 16:06:10,156 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1303 GetRequests, 1272 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2018-09-14 16:06:10,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15641 states. [2018-09-14 16:06:10,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15641 to 15187. [2018-09-14 16:06:10,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15187 states. [2018-09-14 16:06:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15187 states to 15187 states and 19754 transitions. [2018-09-14 16:06:10,644 INFO L78 Accepts]: Start accepts. Automaton has 15187 states and 19754 transitions. Word has length 318 [2018-09-14 16:06:10,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:06:10,645 INFO L480 AbstractCegarLoop]: Abstraction has 15187 states and 19754 transitions. [2018-09-14 16:06:10,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-14 16:06:10,645 INFO L276 IsEmpty]: Start isEmpty. Operand 15187 states and 19754 transitions. [2018-09-14 16:06:10,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-09-14 16:06:10,709 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:06:10,709 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] [2018-09-14 16:06:10,710 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:06:10,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1947591065, now seen corresponding path program 1 times [2018-09-14 16:06:10,710 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:06:10,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:06:10,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:10,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:06:10,711 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:06:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 216 proven. 103 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:06:11,258 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:06:11,258 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:06:11,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:11,267 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:06:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:11,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:06:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2018-09-14 16:06:11,702 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:06:12,032 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 210 proven. 85 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-09-14 16:06:12,055 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:06:12,055 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 6] total 16 [2018-09-14 16:06:12,055 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:06:12,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:06:12,057 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:06:12,057 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2018-09-14 16:06:12,057 INFO L87 Difference]: Start difference. First operand 15187 states and 19754 transitions. Second operand 6 states. [2018-09-14 16:06:14,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:06:14,312 INFO L93 Difference]: Finished difference Result 31533 states and 42265 transitions. [2018-09-14 16:06:14,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 16:06:14,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 413 [2018-09-14 16:06:14,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:06:14,392 INFO L225 Difference]: With dead ends: 31533 [2018-09-14 16:06:14,392 INFO L226 Difference]: Without dead ends: 16097 [2018-09-14 16:06:14,433 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 842 GetRequests, 819 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2018-09-14 16:06:14,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16097 states. [2018-09-14 16:06:14,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16097 to 15622. [2018-09-14 16:06:14,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15622 states. [2018-09-14 16:06:14,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15622 states to 15622 states and 20225 transitions. [2018-09-14 16:06:14,842 INFO L78 Accepts]: Start accepts. Automaton has 15622 states and 20225 transitions. Word has length 413 [2018-09-14 16:06:14,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:06:14,843 INFO L480 AbstractCegarLoop]: Abstraction has 15622 states and 20225 transitions. [2018-09-14 16:06:14,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:06:14,843 INFO L276 IsEmpty]: Start isEmpty. Operand 15622 states and 20225 transitions. [2018-09-14 16:06:14,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-09-14 16:06:14,892 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:06:14,893 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] [2018-09-14 16:06:14,893 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:06:14,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1020677132, now seen corresponding path program 1 times [2018-09-14 16:06:14,893 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:06:14,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:06:14,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:14,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:06:14,895 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:06:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 214 proven. 89 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-09-14 16:06:15,752 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:06:15,752 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) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:06:15,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:15,768 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:06:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:16,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:06:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2018-09-14 16:06:16,193 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:06:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 214 proven. 89 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-09-14 16:06:16,410 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:06:16,410 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 16:06:16,410 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:06:16,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:06:16,411 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:06:16,411 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-09-14 16:06:16,411 INFO L87 Difference]: Start difference. First operand 15622 states and 20225 transitions. Second operand 5 states. [2018-09-14 16:06:18,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:06:18,647 INFO L93 Difference]: Finished difference Result 42165 states and 55365 transitions. [2018-09-14 16:06:18,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 16:06:18,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 415 [2018-09-14 16:06:18,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:06:18,756 INFO L225 Difference]: With dead ends: 42165 [2018-09-14 16:06:18,756 INFO L226 Difference]: Without dead ends: 26564 [2018-09-14 16:06:18,799 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 837 GetRequests, 825 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-09-14 16:06:18,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26564 states. [2018-09-14 16:06:19,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26564 to 25838. [2018-09-14 16:06:19,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25838 states. [2018-09-14 16:06:19,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25838 states to 25838 states and 33192 transitions. [2018-09-14 16:06:19,426 INFO L78 Accepts]: Start accepts. Automaton has 25838 states and 33192 transitions. Word has length 415 [2018-09-14 16:06:19,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:06:19,427 INFO L480 AbstractCegarLoop]: Abstraction has 25838 states and 33192 transitions. [2018-09-14 16:06:19,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:06:19,427 INFO L276 IsEmpty]: Start isEmpty. Operand 25838 states and 33192 transitions. [2018-09-14 16:06:19,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-09-14 16:06:19,488 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:06:19,489 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] [2018-09-14 16:06:19,489 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:06:19,489 INFO L82 PathProgramCache]: Analyzing trace with hash -42916040, now seen corresponding path program 1 times [2018-09-14 16:06:19,489 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:06:19,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:06:19,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:19,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:06:19,491 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:06:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:19,788 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-14 16:06:20,152 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-14 16:06:20,332 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 228 proven. 36 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-09-14 16:06:20,332 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:06:20,332 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:06:20,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:20,342 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:06:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:20,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:06:20,800 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2018-09-14 16:06:20,800 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:06:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 228 proven. 36 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-09-14 16:06:21,058 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:06:21,058 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 11 [2018-09-14 16:06:21,058 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:06:21,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:06:21,059 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:06:21,059 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-14 16:06:21,060 INFO L87 Difference]: Start difference. First operand 25838 states and 33192 transitions. Second operand 5 states. [2018-09-14 16:06:23,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:06:23,368 INFO L93 Difference]: Finished difference Result 51113 states and 66080 transitions. [2018-09-14 16:06:23,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:06:23,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 432 [2018-09-14 16:06:23,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:06:23,447 INFO L225 Difference]: With dead ends: 51113 [2018-09-14 16:06:23,448 INFO L226 Difference]: Without dead ends: 25217 [2018-09-14 16:06:23,491 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 858 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-09-14 16:06:23,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25217 states. [2018-09-14 16:06:23,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25217 to 24652. [2018-09-14 16:06:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24652 states. [2018-09-14 16:06:24,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24652 states to 24652 states and 30933 transitions. [2018-09-14 16:06:24,036 INFO L78 Accepts]: Start accepts. Automaton has 24652 states and 30933 transitions. Word has length 432 [2018-09-14 16:06:24,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:06:24,036 INFO L480 AbstractCegarLoop]: Abstraction has 24652 states and 30933 transitions. [2018-09-14 16:06:24,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:06:24,036 INFO L276 IsEmpty]: Start isEmpty. Operand 24652 states and 30933 transitions. [2018-09-14 16:06:24,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-09-14 16:06:24,086 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:06:24,087 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] [2018-09-14 16:06:24,087 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:06:24,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1601857737, now seen corresponding path program 1 times [2018-09-14 16:06:24,088 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:06:24,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:06:24,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:24,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:06:24,089 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:06:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 239 proven. 119 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-14 16:06:24,843 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:06:24,843 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:06:24,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:24,861 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:06:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:25,139 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:06:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-09-14 16:06:25,712 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:06:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 241 proven. 108 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-09-14 16:06:26,128 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:06:26,128 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 16:06:26,128 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:06:26,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:06:26,129 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:06:26,129 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-09-14 16:06:26,129 INFO L87 Difference]: Start difference. First operand 24652 states and 30933 transitions. Second operand 5 states. [2018-09-14 16:06:27,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:06:27,159 INFO L93 Difference]: Finished difference Result 59781 states and 77029 transitions. [2018-09-14 16:06:27,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 16:06:27,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 434 [2018-09-14 16:06:27,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:06:27,333 INFO L225 Difference]: With dead ends: 59781 [2018-09-14 16:06:27,333 INFO L226 Difference]: Without dead ends: 41887 [2018-09-14 16:06:27,373 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 877 GetRequests, 863 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-14 16:06:27,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41887 states. [2018-09-14 16:06:28,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41887 to 41415. [2018-09-14 16:06:28,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41415 states. [2018-09-14 16:06:28,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41415 states to 41415 states and 51989 transitions. [2018-09-14 16:06:28,382 INFO L78 Accepts]: Start accepts. Automaton has 41415 states and 51989 transitions. Word has length 434 [2018-09-14 16:06:28,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:06:28,383 INFO L480 AbstractCegarLoop]: Abstraction has 41415 states and 51989 transitions. [2018-09-14 16:06:28,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:06:28,383 INFO L276 IsEmpty]: Start isEmpty. Operand 41415 states and 51989 transitions. [2018-09-14 16:06:28,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2018-09-14 16:06:28,462 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:06:28,462 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] [2018-09-14 16:06:28,462 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:06:28,463 INFO L82 PathProgramCache]: Analyzing trace with hash 2124476941, now seen corresponding path program 1 times [2018-09-14 16:06:28,463 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:06:28,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:06:28,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:28,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:06:28,464 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:06:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:28,948 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 268 proven. 14 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2018-09-14 16:06:28,949 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:06:28,949 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 [2018-09-14 16:06:28,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:28,967 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:06:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:29,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:06:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-09-14 16:06:29,515 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:06:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 264 proven. 4 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-09-14 16:06:29,755 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:06:29,756 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 7 [2018-09-14 16:06:29,756 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:06:29,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:06:29,757 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:06:29,757 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:06:29,757 INFO L87 Difference]: Start difference. First operand 41415 states and 51989 transitions. Second operand 3 states. [2018-09-14 16:06:30,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:06:30,796 INFO L93 Difference]: Finished difference Result 76060 states and 95393 transitions. [2018-09-14 16:06:30,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:06:30,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 457 [2018-09-14 16:06:30,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:06:30,935 INFO L225 Difference]: With dead ends: 76060 [2018-09-14 16:06:30,935 INFO L226 Difference]: Without dead ends: 41397 [2018-09-14 16:06:31,003 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 913 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:06:31,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41397 states. [2018-09-14 16:06:32,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41397 to 41397. [2018-09-14 16:06:32,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41397 states. [2018-09-14 16:06:32,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41397 states to 41397 states and 51951 transitions. [2018-09-14 16:06:32,223 INFO L78 Accepts]: Start accepts. Automaton has 41397 states and 51951 transitions. Word has length 457 [2018-09-14 16:06:32,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:06:32,223 INFO L480 AbstractCegarLoop]: Abstraction has 41397 states and 51951 transitions. [2018-09-14 16:06:32,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:06:32,224 INFO L276 IsEmpty]: Start isEmpty. Operand 41397 states and 51951 transitions. [2018-09-14 16:06:32,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-09-14 16:06:32,291 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:06:32,291 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] [2018-09-14 16:06:32,291 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:06:32,292 INFO L82 PathProgramCache]: Analyzing trace with hash 329226487, now seen corresponding path program 1 times [2018-09-14 16:06:32,292 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:06:32,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:06:32,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:32,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:06:32,293 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:06:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:32,674 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 319 proven. 59 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-14 16:06:32,675 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:06:32,675 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:06:32,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:32,683 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:06:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:32,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:06:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 406 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 16:06:33,274 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:06:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 410 proven. 6 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 16:06:33,585 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:06:33,585 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:06:33,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:33,603 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:06:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:34,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:06:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 406 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 16:06:34,464 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:06:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 410 proven. 6 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 16:06:35,016 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:06:35,017 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-14 16:06:35,017 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:06:35,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:06:35,019 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:06:35,019 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-14 16:06:35,019 INFO L87 Difference]: Start difference. First operand 41397 states and 51951 transitions. Second operand 9 states. [2018-09-14 16:06:44,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:06:44,174 INFO L93 Difference]: Finished difference Result 143258 states and 196759 transitions. [2018-09-14 16:06:44,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-14 16:06:44,174 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 466 [2018-09-14 16:06:44,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:06:44,653 INFO L225 Difference]: With dead ends: 143258 [2018-09-14 16:06:44,653 INFO L226 Difference]: Without dead ends: 108566 [2018-09-14 16:06:44,798 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1926 GetRequests, 1879 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2018-09-14 16:06:44,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108566 states. [2018-09-14 16:06:47,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108566 to 103295. [2018-09-14 16:06:47,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103295 states. [2018-09-14 16:06:48,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103295 states to 103295 states and 129216 transitions. [2018-09-14 16:06:48,238 INFO L78 Accepts]: Start accepts. Automaton has 103295 states and 129216 transitions. Word has length 466 [2018-09-14 16:06:48,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:06:48,238 INFO L480 AbstractCegarLoop]: Abstraction has 103295 states and 129216 transitions. [2018-09-14 16:06:48,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 16:06:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 103295 states and 129216 transitions. [2018-09-14 16:06:48,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2018-09-14 16:06:48,523 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:06:48,524 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] [2018-09-14 16:06:48,524 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:06:48,525 INFO L82 PathProgramCache]: Analyzing trace with hash -165506139, now seen corresponding path program 1 times [2018-09-14 16:06:48,525 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:06:48,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:06:48,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:48,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:06:48,526 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:06:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:49,463 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 403 proven. 226 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-09-14 16:06:49,463 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:06:49,463 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 [2018-09-14 16:06:49,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:49,473 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:06:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:49,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:06:50,160 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 493 proven. 2 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-09-14 16:06:50,160 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:06:50,393 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 403 proven. 44 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-09-14 16:06:50,416 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:06:50,416 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 [2018-09-14 16:06:51,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:06:51,181 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:06:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:06:52,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:06:52,441 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 493 proven. 2 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-09-14 16:06:52,442 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:06:52,749 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 16:06:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 403 proven. 44 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-09-14 16:06:53,053 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:06:53,054 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 16 [2018-09-14 16:06:53,054 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:06:53,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-14 16:06:53,055 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-14 16:06:53,055 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-09-14 16:06:53,056 INFO L87 Difference]: Start difference. First operand 103295 states and 129216 transitions. Second operand 14 states. [2018-09-14 16:07:14,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:07:14,496 INFO L93 Difference]: Finished difference Result 669598 states and 888019 transitions. [2018-09-14 16:07:14,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-14 16:07:14,496 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 550 [2018-09-14 16:07:14,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:07:16,992 INFO L225 Difference]: With dead ends: 669598 [2018-09-14 16:07:16,993 INFO L226 Difference]: Without dead ends: 566322 [2018-09-14 16:07:17,391 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2312 GetRequests, 2238 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1777 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1006, Invalid=4250, Unknown=0, NotChecked=0, Total=5256 [2018-09-14 16:07:17,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566322 states. [2018-09-14 16:07:32,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566322 to 554310. [2018-09-14 16:07:32,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554310 states. [2018-09-14 16:07:49,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554310 states to 554310 states and 714322 transitions. [2018-09-14 16:07:49,071 INFO L78 Accepts]: Start accepts. Automaton has 554310 states and 714322 transitions. Word has length 550 [2018-09-14 16:07:49,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:07:49,071 INFO L480 AbstractCegarLoop]: Abstraction has 554310 states and 714322 transitions. [2018-09-14 16:07:49,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-14 16:07:49,071 INFO L276 IsEmpty]: Start isEmpty. Operand 554310 states and 714322 transitions. [2018-09-14 16:07:50,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2018-09-14 16:07:50,685 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:07:50,685 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] [2018-09-14 16:07:50,686 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:07:50,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1796346157, now seen corresponding path program 1 times [2018-09-14 16:07:50,686 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:07:50,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:07:50,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:07:50,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:07:50,687 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:07:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:07:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 371 proven. 30 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2018-09-14 16:07:51,390 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:07:51,391 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 [2018-09-14 16:07:51,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:07:51,400 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:07:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:07:51,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:07:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 584 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-09-14 16:07:51,999 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:07:53,104 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 584 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-09-14 16:07:53,128 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:07:53,128 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 [2018-09-14 16:07:53,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:07:53,144 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:07:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:07:53,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:07:54,231 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 463 proven. 236 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-14 16:07:54,232 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:07:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 584 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-09-14 16:07:54,470 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:07:54,470 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 6, 5] total 13 [2018-09-14 16:07:54,471 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:07:54,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-14 16:07:54,471 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-14 16:07:54,472 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-09-14 16:07:54,472 INFO L87 Difference]: Start difference. First operand 554310 states and 714322 transitions. Second operand 11 states. [2018-09-14 16:08:49,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:08:49,165 INFO L93 Difference]: Finished difference Result 1603981 states and 2392894 transitions. [2018-09-14 16:08:49,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-14 16:08:49,165 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 550 [2018-09-14 16:08:49,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:08:49,166 INFO L225 Difference]: With dead ends: 1603981 [2018-09-14 16:08:49,166 INFO L226 Difference]: Without dead ends: 0 Received shutdown request... [2018-09-14 16:08:55,201 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2272 GetRequests, 2226 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=423, Invalid=1739, Unknown=0, NotChecked=0, Total=2162 [2018-09-14 16:08:55,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-14 16:08:55,202 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 16:08:55,207 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 16:08:55,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 04:08:55 BoogieIcfgContainer [2018-09-14 16:08:55,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 16:08:55,208 INFO L168 Benchmark]: Toolchain (without parser) took 211406.33 ms. Allocated memory was 1.5 GB in the beginning and 6.3 GB in the end (delta: 4.8 GB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 367.7 MB). Peak memory consumption was 5.4 GB. Max. memory is 7.1 GB. [2018-09-14 16:08:55,209 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 16:08:55,210 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1212.99 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. [2018-09-14 16:08:55,211 INFO L168 Benchmark]: Boogie Procedure Inliner took 176.58 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. [2018-09-14 16:08:55,211 INFO L168 Benchmark]: Boogie Preprocessor took 394.85 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 817.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -953.9 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2018-09-14 16:08:55,212 INFO L168 Benchmark]: RCFGBuilder took 5275.83 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 253.8 MB). Peak memory consumption was 253.8 MB. Max. memory is 7.1 GB. [2018-09-14 16:08:55,213 INFO L168 Benchmark]: TraceAbstraction took 204338.18 ms. Allocated memory was 2.4 GB in the beginning and 6.3 GB in the end (delta: 4.0 GB). Free memory was 2.0 GB in the beginning and 1.1 GB in the end (delta: 962.0 MB). Peak memory consumption was 5.2 GB. Max. memory is 7.1 GB. [2018-09-14 16:08:55,222 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1212.99 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 176.58 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 394.85 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 817.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -953.9 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5275.83 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 253.8 MB). Peak memory consumption was 253.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204338.18 ms. Allocated memory was 2.4 GB in the beginning and 6.3 GB in the end (delta: 4.0 GB). Free memory was 2.0 GB in the beginning and 1.1 GB in the end (delta: 962.0 MB). Peak memory consumption was 5.2 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 executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 204.2s OverallTime, 16 OverallIterations, 7 TraceHistogramMax, 130.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3050 SDtfs, 27163 SDslu, 4672 SDs, 0 SdLazy, 33324 SolverSat, 8028 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 48.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14855 GetRequests, 14524 SyntacticMatches, 40 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3175 ImplicationChecksByTransitivity, 11.2s 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: 40.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 20652 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.4s SsaConstructionTime, 6.5s SatisfiabilityAnalysisTime, 19.3s 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-0-2018-09-14_16-08-55-244.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-0-2018-09-14_16-08-55-244.csv Completed graceful shutdown