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_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 16:00:11,742 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 16:00:11,744 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 16:00:11,761 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 16:00:11,761 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 16:00:11,762 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 16:00:11,764 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 16:00:11,767 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 16:00:11,769 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 16:00:11,770 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 16:00:11,779 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 16:00:11,779 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 16:00:11,780 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 16:00:11,781 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 16:00:11,785 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 16:00:11,786 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 16:00:11,786 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 16:00:11,788 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 16:00:11,793 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 16:00:11,794 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 16:00:11,795 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 16:00:11,796 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 16:00:11,798 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 16:00:11,798 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 16:00:11,799 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 16:00:11,799 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 16:00:11,800 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 16:00:11,801 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 16:00:11,802 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 16:00:11,803 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 16:00:11,803 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 16:00:11,803 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 16:00:11,804 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 16:00:11,804 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 16:00:11,805 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 16:00:11,805 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 16:00:11,806 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 16:00:11,820 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 16:00:11,820 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 16:00:11,821 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 16:00:11,821 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 16:00:11,822 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 16:00:11,822 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 16:00:11,822 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 16:00:11,822 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 16:00:11,822 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 16:00:11,822 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 16:00:11,823 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 16:00:11,823 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 16:00:11,824 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 16:00:11,824 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 16:00:11,824 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 16:00:11,824 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 16:00:11,824 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 16:00:11,824 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 16:00:11,825 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 16:00:11,825 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 16:00:11,825 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 16:00:11,825 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 16:00:11,826 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 16:00:11,826 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 16:00:11,826 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 16:00:11,826 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 16:00:11,826 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 16:00:11,827 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 16:00:11,827 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 16:00:11,827 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 16:00:11,827 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 16:00:11,827 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 16:00:11,828 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 16:00:11,874 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 16:00:11,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 16:00:11,896 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 16:00:11,900 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 16:00:11,900 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 16:00:11,901 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label11_true-unreach-call.c [2018-09-14 16:00:12,290 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32b28bb33/00f5f0d3e0d04d6b8b225fda24d581be/FLAG20a95fb91 [2018-09-14 16:00:12,599 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 16:00:12,599 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label11_true-unreach-call.c [2018-09-14 16:00:12,616 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32b28bb33/00f5f0d3e0d04d6b8b225fda24d581be/FLAG20a95fb91 [2018-09-14 16:00:12,633 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32b28bb33/00f5f0d3e0d04d6b8b225fda24d581be [2018-09-14 16:00:12,644 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 16:00:12,649 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 16:00:12,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 16:00:12,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 16:00:12,660 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 16:00:12,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:00:12" (1/1) ... [2018-09-14 16:00:12,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b469391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:12, skipping insertion in model container [2018-09-14 16:00:12,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:00:12" (1/1) ... [2018-09-14 16:00:12,677 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 16:00:13,404 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:00:13,423 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 16:00:13,681 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:00:13,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:13 WrapperNode [2018-09-14 16:00:13,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 16:00:13,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 16:00:13,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 16:00:13,757 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 16:00:13,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:13" (1/1) ... [2018-09-14 16:00:13,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:13" (1/1) ... [2018-09-14 16:00:13,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 16:00:13,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 16:00:13,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 16:00:13,948 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 16:00:14,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:13" (1/1) ... [2018-09-14 16:00:14,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:13" (1/1) ... [2018-09-14 16:00:14,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:13" (1/1) ... [2018-09-14 16:00:14,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:13" (1/1) ... [2018-09-14 16:00:14,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:13" (1/1) ... [2018-09-14 16:00:14,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:13" (1/1) ... [2018-09-14 16:00:14,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:13" (1/1) ... [2018-09-14 16:00:14,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 16:00:14,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 16:00:14,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 16:00:14,309 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 16:00:14,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:13" (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 16:00:14,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 16:00:14,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 16:00:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 16:00:14,388 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 16:00:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 16:00:14,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 16:00:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 16:00:14,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 16:00:18,861 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 16:00:18,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:00:18 BoogieIcfgContainer [2018-09-14 16:00:18,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 16:00:18,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 16:00:18,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 16:00:18,867 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 16:00:18,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 04:00:12" (1/3) ... [2018-09-14 16:00:18,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161ca8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:00:18, skipping insertion in model container [2018-09-14 16:00:18,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:13" (2/3) ... [2018-09-14 16:00:18,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161ca8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:00:18, skipping insertion in model container [2018-09-14 16:00:18,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:00:18" (3/3) ... [2018-09-14 16:00:18,872 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label11_true-unreach-call.c [2018-09-14 16:00:18,883 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 16:00:18,893 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 16:00:18,954 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 16:00:18,955 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 16:00:18,955 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 16:00:18,955 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 16:00:18,955 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 16:00:18,955 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 16:00:18,955 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 16:00:18,956 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 16:00:18,956 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 16:00:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-09-14 16:00:19,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-09-14 16:00:19,009 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:00:19,010 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:00:19,012 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:00:19,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1813715753, now seen corresponding path program 1 times [2018-09-14 16:00:19,021 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:00:19,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:19,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:19,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:19,084 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:00:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:20,093 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:00:20,270 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 16:00:20,272 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:00:20,272 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 16:00:20,273 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:00:20,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:00:20,297 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:00:20,298 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:00:20,301 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-09-14 16:00:22,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:00:22,384 INFO L93 Difference]: Finished difference Result 855 states and 1508 transitions. [2018-09-14 16:00:22,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:00:22,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2018-09-14 16:00:22,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:00:22,415 INFO L225 Difference]: With dead ends: 855 [2018-09-14 16:00:22,416 INFO L226 Difference]: Without dead ends: 541 [2018-09-14 16:00:22,429 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:00:22,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2018-09-14 16:00:22,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 527. [2018-09-14 16:00:22,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2018-09-14 16:00:22,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 901 transitions. [2018-09-14 16:00:22,528 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 901 transitions. Word has length 200 [2018-09-14 16:00:22,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:00:22,530 INFO L480 AbstractCegarLoop]: Abstraction has 527 states and 901 transitions. [2018-09-14 16:00:22,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:00:22,530 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 901 transitions. [2018-09-14 16:00:22,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-14 16:00:22,544 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:00:22,545 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:00:22,545 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:00:22,546 INFO L82 PathProgramCache]: Analyzing trace with hash 86742928, now seen corresponding path program 1 times [2018-09-14 16:00:22,546 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:00:22,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:22,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:22,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:22,548 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:00:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:22,929 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-14 16:00:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:00:23,299 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:00:23,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:00:23,299 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:00:23,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:00:23,302 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:00:23,302 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:00:23,302 INFO L87 Difference]: Start difference. First operand 527 states and 901 transitions. Second operand 6 states. [2018-09-14 16:00:27,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:00:27,114 INFO L93 Difference]: Finished difference Result 1590 states and 2790 transitions. [2018-09-14 16:00:27,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-14 16:00:27,115 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 210 [2018-09-14 16:00:27,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:00:27,131 INFO L225 Difference]: With dead ends: 1590 [2018-09-14 16:00:27,132 INFO L226 Difference]: Without dead ends: 1069 [2018-09-14 16:00:27,135 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:00:27,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2018-09-14 16:00:27,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1024. [2018-09-14 16:00:27,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2018-09-14 16:00:27,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1744 transitions. [2018-09-14 16:00:27,200 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1744 transitions. Word has length 210 [2018-09-14 16:00:27,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:00:27,200 INFO L480 AbstractCegarLoop]: Abstraction has 1024 states and 1744 transitions. [2018-09-14 16:00:27,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:00:27,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1744 transitions. [2018-09-14 16:00:27,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-09-14 16:00:27,205 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:00:27,206 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:00:27,206 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:00:27,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1017484904, now seen corresponding path program 1 times [2018-09-14 16:00:27,207 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:00:27,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:27,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:27,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:27,208 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:00:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:27,444 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:00:27,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:00:27,689 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:00:27,689 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 16:00:27,690 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:00:27,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:00:27,692 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:00:27,693 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 16:00:27,693 INFO L87 Difference]: Start difference. First operand 1024 states and 1744 transitions. Second operand 5 states. [2018-09-14 16:00:31,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:00:31,149 INFO L93 Difference]: Finished difference Result 3166 states and 5668 transitions. [2018-09-14 16:00:31,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:00:31,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2018-09-14 16:00:31,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:00:31,168 INFO L225 Difference]: With dead ends: 3166 [2018-09-14 16:00:31,169 INFO L226 Difference]: Without dead ends: 2148 [2018-09-14 16:00:31,175 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 16:00:31,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2018-09-14 16:00:31,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2105. [2018-09-14 16:00:31,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2105 states. [2018-09-14 16:00:31,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 3420 transitions. [2018-09-14 16:00:31,273 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 3420 transitions. Word has length 211 [2018-09-14 16:00:31,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:00:31,273 INFO L480 AbstractCegarLoop]: Abstraction has 2105 states and 3420 transitions. [2018-09-14 16:00:31,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:00:31,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 3420 transitions. [2018-09-14 16:00:31,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-09-14 16:00:31,282 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:00:31,282 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:00:31,282 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:00:31,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1009483949, now seen corresponding path program 1 times [2018-09-14 16:00:31,283 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:00:31,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:31,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:31,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:31,284 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:00:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:31,610 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:00:31,610 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:00:31,610 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 16:00:31,611 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:00:31,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:00:31,611 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:00:31,612 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:00:31,612 INFO L87 Difference]: Start difference. First operand 2105 states and 3420 transitions. Second operand 3 states. [2018-09-14 16:00:33,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:00:33,033 INFO L93 Difference]: Finished difference Result 6093 states and 10292 transitions. [2018-09-14 16:00:33,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:00:33,034 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2018-09-14 16:00:33,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:00:33,064 INFO L225 Difference]: With dead ends: 6093 [2018-09-14 16:00:33,064 INFO L226 Difference]: Without dead ends: 3994 [2018-09-14 16:00:33,132 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 16:00:33,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2018-09-14 16:00:33,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3991. [2018-09-14 16:00:33,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3991 states. [2018-09-14 16:00:33,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3991 states to 3991 states and 6333 transitions. [2018-09-14 16:00:33,257 INFO L78 Accepts]: Start accepts. Automaton has 3991 states and 6333 transitions. Word has length 213 [2018-09-14 16:00:33,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:00:33,258 INFO L480 AbstractCegarLoop]: Abstraction has 3991 states and 6333 transitions. [2018-09-14 16:00:33,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:00:33,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3991 states and 6333 transitions. [2018-09-14 16:00:33,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-09-14 16:00:33,272 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:00:33,272 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:00:33,273 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:00:33,273 INFO L82 PathProgramCache]: Analyzing trace with hash 535960129, now seen corresponding path program 1 times [2018-09-14 16:00:33,273 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:00:33,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:33,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:33,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:33,274 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:00:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:00:33,558 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:00:33,558 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-14 16:00:33,558 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:00:33,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 16:00:33,559 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 16:00:33,559 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:00:33,560 INFO L87 Difference]: Start difference. First operand 3991 states and 6333 transitions. Second operand 7 states. [2018-09-14 16:00:36,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:00:36,293 INFO L93 Difference]: Finished difference Result 12139 states and 21255 transitions. [2018-09-14 16:00:36,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:00:36,300 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2018-09-14 16:00:36,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:00:36,360 INFO L225 Difference]: With dead ends: 12139 [2018-09-14 16:00:36,360 INFO L226 Difference]: Without dead ends: 8154 [2018-09-14 16:00:36,379 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:00:36,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8154 states. [2018-09-14 16:00:36,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8154 to 7966. [2018-09-14 16:00:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7966 states. [2018-09-14 16:00:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7966 states to 7966 states and 13096 transitions. [2018-09-14 16:00:36,665 INFO L78 Accepts]: Start accepts. Automaton has 7966 states and 13096 transitions. Word has length 219 [2018-09-14 16:00:36,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:00:36,665 INFO L480 AbstractCegarLoop]: Abstraction has 7966 states and 13096 transitions. [2018-09-14 16:00:36,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 16:00:36,665 INFO L276 IsEmpty]: Start isEmpty. Operand 7966 states and 13096 transitions. [2018-09-14 16:00:36,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-09-14 16:00:36,691 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:00:36,691 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:00:36,692 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:00:36,692 INFO L82 PathProgramCache]: Analyzing trace with hash 486898844, now seen corresponding path program 1 times [2018-09-14 16:00:36,692 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:00:36,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:36,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:36,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:36,694 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:00:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:36,950 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:00:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:00:37,066 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:00:37,067 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:00:37,067 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:00:37,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:00:37,067 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:00:37,067 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:00:37,068 INFO L87 Difference]: Start difference. First operand 7966 states and 13096 transitions. Second operand 6 states. [2018-09-14 16:00:39,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:00:39,433 INFO L93 Difference]: Finished difference Result 16547 states and 28268 transitions. [2018-09-14 16:00:39,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:00:39,438 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 220 [2018-09-14 16:00:39,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:00:39,486 INFO L225 Difference]: With dead ends: 16547 [2018-09-14 16:00:39,486 INFO L226 Difference]: Without dead ends: 8587 [2018-09-14 16:00:39,520 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 16:00:39,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8587 states. [2018-09-14 16:00:39,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8587 to 8357. [2018-09-14 16:00:39,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8357 states. [2018-09-14 16:00:39,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8357 states to 8357 states and 12585 transitions. [2018-09-14 16:00:39,972 INFO L78 Accepts]: Start accepts. Automaton has 8357 states and 12585 transitions. Word has length 220 [2018-09-14 16:00:39,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:00:39,973 INFO L480 AbstractCegarLoop]: Abstraction has 8357 states and 12585 transitions. [2018-09-14 16:00:39,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:00:39,973 INFO L276 IsEmpty]: Start isEmpty. Operand 8357 states and 12585 transitions. [2018-09-14 16:00:39,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-09-14 16:00:39,993 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:00:39,993 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:00:39,994 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:00:39,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1745842198, now seen corresponding path program 1 times [2018-09-14 16:00:39,995 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:00:39,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:39,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:39,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:39,996 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:00:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:40,249 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:00:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:00:40,438 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:00:40,438 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 16:00:40,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:40,457 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:00:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:40,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:00:40,890 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-14 16:00:40,890 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:00:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-14 16:00:41,044 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 16:00:41,044 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [5] total 7 [2018-09-14 16:00:41,044 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:00:41,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:00:41,045 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:00:41,045 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:00:41,046 INFO L87 Difference]: Start difference. First operand 8357 states and 12585 transitions. Second operand 3 states. [2018-09-14 16:00:43,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:00:43,871 INFO L93 Difference]: Finished difference Result 16702 states and 25160 transitions. [2018-09-14 16:00:43,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:00:43,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2018-09-14 16:00:43,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:00:43,903 INFO L225 Difference]: With dead ends: 16702 [2018-09-14 16:00:43,903 INFO L226 Difference]: Without dead ends: 8351 [2018-09-14 16:00:43,924 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:00:43,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8351 states. [2018-09-14 16:00:44,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8351 to 8351. [2018-09-14 16:00:44,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8351 states. [2018-09-14 16:00:44,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8351 states to 8351 states and 12571 transitions. [2018-09-14 16:00:44,130 INFO L78 Accepts]: Start accepts. Automaton has 8351 states and 12571 transitions. Word has length 224 [2018-09-14 16:00:44,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:00:44,130 INFO L480 AbstractCegarLoop]: Abstraction has 8351 states and 12571 transitions. [2018-09-14 16:00:44,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:00:44,131 INFO L276 IsEmpty]: Start isEmpty. Operand 8351 states and 12571 transitions. [2018-09-14 16:00:44,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-09-14 16:00:44,153 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:00:44,153 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:44,154 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:00:44,154 INFO L82 PathProgramCache]: Analyzing trace with hash 483391520, now seen corresponding path program 1 times [2018-09-14 16:00:44,154 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:00:44,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:44,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:44,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:44,156 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:00:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:00:44,605 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:00:44,605 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 16:00:44,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:44,613 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:00:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:44,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:00:45,261 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:00:45,261 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:00:45,522 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:00:45,545 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:00:45,545 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 16:00:45,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:45,562 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:00:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:45,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:00:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:00:46,404 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:00:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:00:46,708 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:00:46,708 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 18 [2018-09-14 16:00:46,708 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:00:46,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:00:46,710 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:00:46,710 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-09-14 16:00:46,710 INFO L87 Difference]: Start difference. First operand 8351 states and 12571 transitions. Second operand 9 states. [2018-09-14 16:00:48,727 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-09-14 16:00:49,641 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-14 16:01:02,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:02,275 INFO L93 Difference]: Finished difference Result 69229 states and 144895 transitions. [2018-09-14 16:01:02,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-14 16:01:02,275 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 233 [2018-09-14 16:01:02,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:02,778 INFO L225 Difference]: With dead ends: 69229 [2018-09-14 16:01:02,779 INFO L226 Difference]: Without dead ends: 60884 [2018-09-14 16:01:03,019 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 992 GetRequests, 948 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=373, Invalid=1697, Unknown=0, NotChecked=0, Total=2070 [2018-09-14 16:01:03,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60884 states. [2018-09-14 16:01:05,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60884 to 57566. [2018-09-14 16:01:05,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57566 states. [2018-09-14 16:01:05,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57566 states to 57566 states and 83202 transitions. [2018-09-14 16:01:05,965 INFO L78 Accepts]: Start accepts. Automaton has 57566 states and 83202 transitions. Word has length 233 [2018-09-14 16:01:05,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:01:05,966 INFO L480 AbstractCegarLoop]: Abstraction has 57566 states and 83202 transitions. [2018-09-14 16:01:05,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 16:01:05,966 INFO L276 IsEmpty]: Start isEmpty. Operand 57566 states and 83202 transitions. [2018-09-14 16:01:06,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-09-14 16:01:06,126 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:06,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:06,127 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:06,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1911803370, now seen corresponding path program 1 times [2018-09-14 16:01:06,127 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:06,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:06,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:06,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:06,129 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:01:06,701 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:06,701 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 16:01:06,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:06,713 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:06,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-14 16:01:07,094 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-14 16:01:07,545 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 16:01:07,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-09-14 16:01:07,546 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:01:07,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:01:07,546 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:01:07,547 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-14 16:01:07,547 INFO L87 Difference]: Start difference. First operand 57566 states and 83202 transitions. Second operand 3 states. [2018-09-14 16:01:10,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:10,655 INFO L93 Difference]: Finished difference Result 113198 states and 162031 transitions. [2018-09-14 16:01:10,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:01:10,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 254 [2018-09-14 16:01:10,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:11,713 INFO L225 Difference]: With dead ends: 113198 [2018-09-14 16:01:11,714 INFO L226 Difference]: Without dead ends: 68909 [2018-09-14 16:01:11,798 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-14 16:01:11,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68909 states. [2018-09-14 16:01:13,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68909 to 68026. [2018-09-14 16:01:13,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68026 states. [2018-09-14 16:01:13,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68026 states to 68026 states and 98253 transitions. [2018-09-14 16:01:13,294 INFO L78 Accepts]: Start accepts. Automaton has 68026 states and 98253 transitions. Word has length 254 [2018-09-14 16:01:13,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:01:13,295 INFO L480 AbstractCegarLoop]: Abstraction has 68026 states and 98253 transitions. [2018-09-14 16:01:13,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:01:13,295 INFO L276 IsEmpty]: Start isEmpty. Operand 68026 states and 98253 transitions. [2018-09-14 16:01:13,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-09-14 16:01:13,396 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:13,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:13,396 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:13,397 INFO L82 PathProgramCache]: Analyzing trace with hash 634448950, now seen corresponding path program 1 times [2018-09-14 16:01:13,397 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:13,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:13,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:13,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:13,398 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:13,724 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:01:14,161 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:01:14,162 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:01:14,162 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:01:14,162 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:01:14,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:01:14,163 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:01:14,163 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:01:14,164 INFO L87 Difference]: Start difference. First operand 68026 states and 98253 transitions. Second operand 6 states. [2018-09-14 16:01:17,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:17,890 INFO L93 Difference]: Finished difference Result 133019 states and 195080 transitions. [2018-09-14 16:01:17,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:01:17,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 264 [2018-09-14 16:01:17,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:18,094 INFO L225 Difference]: With dead ends: 133019 [2018-09-14 16:01:18,094 INFO L226 Difference]: Without dead ends: 65009 [2018-09-14 16:01:18,212 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:01:18,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65009 states. [2018-09-14 16:01:19,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65009 to 64200. [2018-09-14 16:01:19,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64200 states. [2018-09-14 16:01:19,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64200 states to 64200 states and 84006 transitions. [2018-09-14 16:01:19,696 INFO L78 Accepts]: Start accepts. Automaton has 64200 states and 84006 transitions. Word has length 264 [2018-09-14 16:01:19,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:01:19,697 INFO L480 AbstractCegarLoop]: Abstraction has 64200 states and 84006 transitions. [2018-09-14 16:01:19,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:01:19,697 INFO L276 IsEmpty]: Start isEmpty. Operand 64200 states and 84006 transitions. [2018-09-14 16:01:19,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-09-14 16:01:19,784 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:19,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:19,784 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:19,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1637293847, now seen corresponding path program 1 times [2018-09-14 16:01:19,785 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:19,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:19,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:19,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:19,786 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:20,427 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-14 16:01:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:01:20,725 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:20,725 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:01:20,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:20,741 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:20,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-14 16:01:21,160 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-14 16:01:21,473 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 16:01:21,474 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-14 16:01:21,474 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:01:21,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:01:21,475 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:01:21,475 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:01:21,475 INFO L87 Difference]: Start difference. First operand 64200 states and 84006 transitions. Second operand 3 states. [2018-09-14 16:01:24,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:24,624 INFO L93 Difference]: Finished difference Result 171794 states and 225370 transitions. [2018-09-14 16:01:24,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:01:24,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 291 [2018-09-14 16:01:24,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:24,910 INFO L225 Difference]: With dead ends: 171794 [2018-09-14 16:01:24,911 INFO L226 Difference]: Without dead ends: 107600 [2018-09-14 16:01:25,016 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 580 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:01:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107600 states. [2018-09-14 16:01:26,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107600 to 105966. [2018-09-14 16:01:26,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105966 states. [2018-09-14 16:01:27,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105966 states to 105966 states and 136854 transitions. [2018-09-14 16:01:27,103 INFO L78 Accepts]: Start accepts. Automaton has 105966 states and 136854 transitions. Word has length 291 [2018-09-14 16:01:27,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:01:27,104 INFO L480 AbstractCegarLoop]: Abstraction has 105966 states and 136854 transitions. [2018-09-14 16:01:27,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:01:27,104 INFO L276 IsEmpty]: Start isEmpty. Operand 105966 states and 136854 transitions. [2018-09-14 16:01:27,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-09-14 16:01:27,193 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:27,193 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:27,193 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:27,193 INFO L82 PathProgramCache]: Analyzing trace with hash 285489118, now seen corresponding path program 1 times [2018-09-14 16:01:27,194 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:27,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:27,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:27,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:27,194 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:27,499 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 107 proven. 22 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-14 16:01:27,499 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:27,499 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 16:01:28,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:28,805 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:29,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:29,263 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-09-14 16:01:29,264 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-09-14 16:01:29,893 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 16:01:29,893 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-14 16:01:29,893 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:01:29,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:01:29,894 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:01:29,894 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:01:29,895 INFO L87 Difference]: Start difference. First operand 105966 states and 136854 transitions. Second operand 3 states. [2018-09-14 16:01:32,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:32,597 INFO L93 Difference]: Finished difference Result 190049 states and 244040 transitions. [2018-09-14 16:01:32,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:01:32,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 302 [2018-09-14 16:01:32,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:32,970 INFO L225 Difference]: With dead ends: 190049 [2018-09-14 16:01:32,970 INFO L226 Difference]: Without dead ends: 98687 [2018-09-14 16:01:33,119 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 602 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:01:33,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98687 states. [2018-09-14 16:01:35,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98687 to 98383. [2018-09-14 16:01:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98383 states. [2018-09-14 16:01:36,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98383 states to 98383 states and 125406 transitions. [2018-09-14 16:01:36,042 INFO L78 Accepts]: Start accepts. Automaton has 98383 states and 125406 transitions. Word has length 302 [2018-09-14 16:01:36,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:01:36,043 INFO L480 AbstractCegarLoop]: Abstraction has 98383 states and 125406 transitions. [2018-09-14 16:01:36,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:01:36,043 INFO L276 IsEmpty]: Start isEmpty. Operand 98383 states and 125406 transitions. [2018-09-14 16:01:36,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-09-14 16:01:36,134 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:36,134 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:36,135 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:36,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1366119858, now seen corresponding path program 1 times [2018-09-14 16:01:36,135 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:36,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:36,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:36,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:36,137 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:36,676 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 115 proven. 22 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-14 16:01:36,676 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:36,676 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:01:36,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:36,693 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:36,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 16:01:37,328 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:37,463 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 99 proven. 16 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-09-14 16:01:37,485 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:01:37,486 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 16:01:37,486 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:01:37,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:01:37,486 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:01:37,486 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-09-14 16:01:37,487 INFO L87 Difference]: Start difference. First operand 98383 states and 125406 transitions. Second operand 5 states. [2018-09-14 16:01:40,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:40,613 INFO L93 Difference]: Finished difference Result 198212 states and 259492 transitions. [2018-09-14 16:01:40,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:01:40,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2018-09-14 16:01:40,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:40,999 INFO L225 Difference]: With dead ends: 198212 [2018-09-14 16:01:40,999 INFO L226 Difference]: Without dead ends: 99905 [2018-09-14 16:01:41,169 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-09-14 16:01:41,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99905 states. [2018-09-14 16:01:44,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99905 to 93561. [2018-09-14 16:01:44,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93561 states. [2018-09-14 16:01:44,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93561 states to 93561 states and 116786 transitions. [2018-09-14 16:01:44,432 INFO L78 Accepts]: Start accepts. Automaton has 93561 states and 116786 transitions. Word has length 310 [2018-09-14 16:01:44,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:01:44,432 INFO L480 AbstractCegarLoop]: Abstraction has 93561 states and 116786 transitions. [2018-09-14 16:01:44,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:01:44,432 INFO L276 IsEmpty]: Start isEmpty. Operand 93561 states and 116786 transitions. [2018-09-14 16:01:44,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-09-14 16:01:44,512 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:44,512 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:44,512 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:44,513 INFO L82 PathProgramCache]: Analyzing trace with hash -2130603741, now seen corresponding path program 1 times [2018-09-14 16:01:44,513 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:44,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:44,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:44,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:44,514 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:44,889 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 133 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-09-14 16:01:44,890 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:44,890 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 16:01:44,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:44,899 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:48,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:48,828 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-14 16:01:48,829 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 133 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-09-14 16:01:49,649 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:49,649 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:01:49,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:49,681 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:50,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:50,688 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 21 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-14 16:01:50,688 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:50,939 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 133 proven. 37 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:01:50,945 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:01:50,945 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 7, 8] total 12 [2018-09-14 16:01:50,945 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:01:50,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:01:50,946 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:01:50,946 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-14 16:01:50,947 INFO L87 Difference]: Start difference. First operand 93561 states and 116786 transitions. Second operand 6 states. [2018-09-14 16:01:52,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:52,952 INFO L93 Difference]: Finished difference Result 184530 states and 229990 transitions. [2018-09-14 16:01:52,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 16:01:52,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 319 [2018-09-14 16:01:52,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:53,419 INFO L225 Difference]: With dead ends: 184530 [2018-09-14 16:01:53,419 INFO L226 Difference]: Without dead ends: 91045 [2018-09-14 16:01:53,499 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1282 GetRequests, 1266 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-09-14 16:01:53,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91045 states. [2018-09-14 16:01:54,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91045 to 91043. [2018-09-14 16:01:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91043 states. [2018-09-14 16:01:54,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91043 states to 91043 states and 111177 transitions. [2018-09-14 16:01:54,902 INFO L78 Accepts]: Start accepts. Automaton has 91043 states and 111177 transitions. Word has length 319 [2018-09-14 16:01:54,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:01:54,902 INFO L480 AbstractCegarLoop]: Abstraction has 91043 states and 111177 transitions. [2018-09-14 16:01:54,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:01:54,902 INFO L276 IsEmpty]: Start isEmpty. Operand 91043 states and 111177 transitions. [2018-09-14 16:01:54,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-09-14 16:01:54,996 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:54,996 INFO L376 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 16:01:54,996 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:54,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1770463775, now seen corresponding path program 1 times [2018-09-14 16:01:54,997 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:54,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:54,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:54,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:54,998 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-09-14 16:01:56,080 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:56,081 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 16:01:56,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:56,089 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:56,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:57,062 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-09-14 16:01:57,063 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:57,241 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 16:01:57,535 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 162 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:01:57,557 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:57,558 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 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:01:57,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:57,574 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:58,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:58,584 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-14 16:01:58,986 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-14 16:01:59,352 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-09-14 16:01:59,501 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2018-09-14 16:01:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-09-14 16:01:59,704 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:02:00,041 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2018-09-14 16:02:00,603 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2018-09-14 16:02:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 160 proven. 47 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:02:01,382 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:02:01,383 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8, 10, 11] total 34 [2018-09-14 16:02:01,383 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:02:01,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-14 16:02:01,384 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-14 16:02:01,384 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2018-09-14 16:02:01,385 INFO L87 Difference]: Start difference. First operand 91043 states and 111177 transitions. Second operand 12 states. [2018-09-14 16:02:08,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:02:08,224 INFO L93 Difference]: Finished difference Result 254035 states and 319819 transitions. [2018-09-14 16:02:08,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-14 16:02:08,224 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 361 [2018-09-14 16:02:08,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:02:08,712 INFO L225 Difference]: With dead ends: 254035 [2018-09-14 16:02:08,712 INFO L226 Difference]: Without dead ends: 177440 [2018-09-14 16:02:08,852 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1473 GetRequests, 1428 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=309, Invalid=1761, Unknown=0, NotChecked=0, Total=2070 [2018-09-14 16:02:08,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177440 states. [2018-09-14 16:02:13,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177440 to 170977. [2018-09-14 16:02:13,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170977 states. [2018-09-14 16:02:13,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170977 states to 170977 states and 204368 transitions. [2018-09-14 16:02:13,402 INFO L78 Accepts]: Start accepts. Automaton has 170977 states and 204368 transitions. Word has length 361 [2018-09-14 16:02:13,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:02:13,402 INFO L480 AbstractCegarLoop]: Abstraction has 170977 states and 204368 transitions. [2018-09-14 16:02:13,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-14 16:02:13,402 INFO L276 IsEmpty]: Start isEmpty. Operand 170977 states and 204368 transitions. [2018-09-14 16:02:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-09-14 16:02:13,511 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:02:13,511 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:02:13,511 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:02:13,511 INFO L82 PathProgramCache]: Analyzing trace with hash -516712074, now seen corresponding path program 1 times [2018-09-14 16:02:13,512 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:02:13,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:13,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:13,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:13,513 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:02:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 176 proven. 16 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-14 16:02:14,581 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:02:14,581 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 16:02:14,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:14,589 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:02:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:14,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:02:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-09-14 16:02:15,102 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:02:15,389 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 156 proven. 79 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-09-14 16:02:15,411 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:02:15,412 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 14 [2018-09-14 16:02:15,412 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:02:15,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:02:15,412 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:02:15,412 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2018-09-14 16:02:15,413 INFO L87 Difference]: Start difference. First operand 170977 states and 204368 transitions. Second operand 6 states. [2018-09-14 16:02:19,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:02:19,521 INFO L93 Difference]: Finished difference Result 329455 states and 395263 transitions. [2018-09-14 16:02:19,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 16:02:19,521 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 367 [2018-09-14 16:02:19,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:02:20,132 INFO L225 Difference]: With dead ends: 329455 [2018-09-14 16:02:20,133 INFO L226 Difference]: Without dead ends: 172933 [2018-09-14 16:02:20,520 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 726 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2018-09-14 16:02:20,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172933 states. [2018-09-14 16:02:23,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172933 to 171343. [2018-09-14 16:02:23,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171343 states. [2018-09-14 16:02:24,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171343 states to 171343 states and 203881 transitions. [2018-09-14 16:02:24,229 INFO L78 Accepts]: Start accepts. Automaton has 171343 states and 203881 transitions. Word has length 367 [2018-09-14 16:02:24,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:02:24,229 INFO L480 AbstractCegarLoop]: Abstraction has 171343 states and 203881 transitions. [2018-09-14 16:02:24,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:02:24,229 INFO L276 IsEmpty]: Start isEmpty. Operand 171343 states and 203881 transitions. [2018-09-14 16:02:24,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-09-14 16:02:24,366 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:02:24,366 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, 2, 2, 2, 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] [2018-09-14 16:02:24,366 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:02:24,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1945185356, now seen corresponding path program 1 times [2018-09-14 16:02:24,367 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:02:24,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:24,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:24,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:24,368 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:02:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:24,757 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 187 proven. 92 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-14 16:02:24,758 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:02:24,758 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 16:02:24,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:24,765 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:02:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:25,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:02:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-14 16:02:25,742 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:02:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 189 proven. 81 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-09-14 16:02:25,960 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:02:25,961 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 16:02:25,961 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:02:25,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:02:25,962 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:02:25,962 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-09-14 16:02:25,962 INFO L87 Difference]: Start difference. First operand 171343 states and 203881 transitions. Second operand 5 states. [2018-09-14 16:02:30,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:02:30,489 INFO L93 Difference]: Finished difference Result 465371 states and 564431 transitions. [2018-09-14 16:02:30,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 16:02:30,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 390 [2018-09-14 16:02:30,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:02:31,438 INFO L225 Difference]: With dead ends: 465371 [2018-09-14 16:02:31,438 INFO L226 Difference]: Without dead ends: 308586 [2018-09-14 16:02:31,607 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 775 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-14 16:02:31,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308586 states. [2018-09-14 16:02:38,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308586 to 305351. [2018-09-14 16:02:38,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305351 states. [2018-09-14 16:02:38,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305351 states to 305351 states and 360875 transitions. [2018-09-14 16:02:38,769 INFO L78 Accepts]: Start accepts. Automaton has 305351 states and 360875 transitions. Word has length 390 [2018-09-14 16:02:38,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:02:38,769 INFO L480 AbstractCegarLoop]: Abstraction has 305351 states and 360875 transitions. [2018-09-14 16:02:38,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:02:38,770 INFO L276 IsEmpty]: Start isEmpty. Operand 305351 states and 360875 transitions. [2018-09-14 16:02:38,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-09-14 16:02:38,894 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:02:38,894 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 16:02:38,895 INFO L423 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:02:38,895 INFO L82 PathProgramCache]: Analyzing trace with hash 105120892, now seen corresponding path program 1 times [2018-09-14 16:02:38,895 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:02:38,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:38,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:38,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:38,896 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:02:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-14 16:02:40,282 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:02:40,283 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:02:40,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:40,290 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:02:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:40,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:02:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-14 16:02:40,850 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:02:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-14 16:02:41,102 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:02:41,102 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 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:02:41,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:41,119 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:02:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:41,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:02:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 185 proven. 88 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-14 16:02:41,846 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:02:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-14 16:02:42,015 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:02:42,016 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 7, 5] total 10 [2018-09-14 16:02:42,016 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:02:42,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 16:02:42,017 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 16:02:42,017 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-09-14 16:02:42,017 INFO L87 Difference]: Start difference. First operand 305351 states and 360875 transitions. Second operand 7 states. [2018-09-14 16:02:58,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:02:58,138 INFO L93 Difference]: Finished difference Result 1123204 states and 1384323 transitions. [2018-09-14 16:02:58,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 16:02:58,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 390 [2018-09-14 16:02:58,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:03:01,147 INFO L225 Difference]: With dead ends: 1123204 [2018-09-14 16:03:01,147 INFO L226 Difference]: Without dead ends: 817929 [2018-09-14 16:03:01,601 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1568 GetRequests, 1554 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-09-14 16:03:02,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817929 states. [2018-09-14 16:03:19,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817929 to 802866. [2018-09-14 16:03:19,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 802866 states. [2018-09-14 16:03:23,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802866 states to 802866 states and 947759 transitions. [2018-09-14 16:03:23,082 INFO L78 Accepts]: Start accepts. Automaton has 802866 states and 947759 transitions. Word has length 390 [2018-09-14 16:03:23,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:03:23,083 INFO L480 AbstractCegarLoop]: Abstraction has 802866 states and 947759 transitions. [2018-09-14 16:03:23,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 16:03:23,083 INFO L276 IsEmpty]: Start isEmpty. Operand 802866 states and 947759 transitions. [2018-09-14 16:03:23,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-09-14 16:03:23,453 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:03:23,453 INFO L376 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 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] [2018-09-14 16:03:23,454 INFO L423 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:03:23,454 INFO L82 PathProgramCache]: Analyzing trace with hash -979319325, now seen corresponding path program 1 times [2018-09-14 16:03:23,454 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:03:23,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:03:23,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:03:23,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:03:23,455 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:03:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:03:23,970 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-09-14 16:03:23,970 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:03:23,970 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:03:23,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:03:23,978 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:03:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:03:24,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:03:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-09-14 16:03:24,298 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-09-14 16:03:33,095 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-09-14 16:03:33,117 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:03:33,118 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 18 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:03:33,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:03:33,133 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:03:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:03:33,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:03:33,717 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-14 16:03:33,918 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:03:33,918 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 16:03:33,924 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 16:03:33,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 04:03:33 BoogieIcfgContainer [2018-09-14 16:03:33,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 16:03:33,926 INFO L168 Benchmark]: Toolchain (without parser) took 201280.66 ms. Allocated memory was 1.5 GB in the beginning and 6.1 GB in the end (delta: 4.6 GB). Free memory was 1.4 GB in the beginning and 4.1 GB in the end (delta: -2.7 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-09-14 16:03:33,927 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 16:03:33,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1105.52 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-09-14 16:03:33,928 INFO L168 Benchmark]: Boogie Procedure Inliner took 190.05 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 16:03:33,929 INFO L168 Benchmark]: Boogie Preprocessor took 360.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -919.9 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. [2018-09-14 16:03:33,929 INFO L168 Benchmark]: RCFGBuilder took 4554.05 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 258.6 MB). Peak memory consumption was 258.6 MB. Max. memory is 7.1 GB. [2018-09-14 16:03:33,930 INFO L168 Benchmark]: TraceAbstraction took 195061.41 ms. Allocated memory was 2.3 GB in the beginning and 6.1 GB in the end (delta: 3.8 GB). Free memory was 2.0 GB in the beginning and 4.1 GB in the end (delta: -2.1 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-09-14 16:03:33,935 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1105.52 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 190.05 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 360.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -919.9 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4554.05 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 258.6 MB). Peak memory consumption was 258.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 195061.41 ms. Allocated memory was 2.3 GB in the beginning and 6.1 GB in the end (delta: 3.8 GB). Free memory was 2.0 GB in the beginning and 4.1 GB in the end (delta: -2.1 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1614]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1614). Cancelled while BasicCegarLoop was analyzing trace of length 392 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 3 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 194.9s OverallTime, 19 OverallIterations, 4 TraceHistogramMax, 94.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4924 SDtfs, 20900 SDslu, 5943 SDs, 0 SdLazy, 26597 SolverSat, 6017 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 42.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9698 GetRequests, 9465 SyntacticMatches, 28 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 13.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=802866occurred in iteration=18, 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: 53.8s AutomataMinimizationTime, 18 MinimizatonAttempts, 40168 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 4.5s SsaConstructionTime, 4.3s SatisfiabilityAnalysisTime, 20.9s InterpolantComputationTime, 9722 NumberOfCodeBlocks, 9722 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 14418 ConstructedInterpolants, 0 QuantifiedInterpolants, 10580412 SizeOfPredicates, 61 NumberOfNonLiveVariables, 18677 ConjunctsInSsa, 234 ConjunctsInUnsatCore, 48 InterpolantComputations, 18 PerfectInterpolantSequences, 6114/6756 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_label11_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_16-03-33-950.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label11_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_16-03-33-950.csv Completed graceful shutdown