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_label23_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 10:13:59,846 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 10:13:59,848 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 10:13:59,862 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 10:13:59,862 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 10:13:59,863 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 10:13:59,865 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 10:13:59,867 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 10:13:59,868 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 10:13:59,870 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 10:13:59,871 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 10:13:59,872 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 10:13:59,874 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 10:13:59,876 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 10:13:59,880 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 10:13:59,881 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 10:13:59,882 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 10:13:59,889 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 10:13:59,896 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 10:13:59,898 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 10:13:59,899 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 10:13:59,900 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 10:13:59,904 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 10:13:59,905 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 10:13:59,905 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 10:13:59,908 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 10:13:59,910 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 10:13:59,910 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 10:13:59,911 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 10:13:59,914 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 10:13:59,914 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 10:13:59,915 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 10:13:59,915 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 10:13:59,915 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 10:13:59,918 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 10:13:59,918 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 10:13:59,919 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 10:13:59,934 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 10:13:59,935 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 10:13:59,935 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 10:13:59,936 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 10:13:59,936 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 10:13:59,936 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 10:13:59,936 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 10:13:59,936 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 10:13:59,937 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 10:13:59,937 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 10:13:59,937 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 10:13:59,937 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 10:13:59,938 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 10:13:59,938 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 10:13:59,938 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 10:13:59,939 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 10:13:59,939 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 10:13:59,939 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 10:13:59,939 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 10:13:59,939 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 10:13:59,940 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 10:13:59,940 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 10:13:59,940 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 10:13:59,940 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 10:13:59,940 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:13:59,941 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 10:13:59,941 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 10:13:59,941 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 10:13:59,941 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 10:13:59,941 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 10:13:59,942 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 10:13:59,942 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 10:13:59,942 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 10:13:59,942 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 10:13:59,987 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 10:14:00,003 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 10:14:00,007 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 10:14:00,009 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 10:14:00,009 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 10:14:00,010 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label23_true-unreach-call.c [2018-09-18 10:14:00,367 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71c4b44e3/5ef188be97d34bec92313ec28c523e22/FLAG75025e00a [2018-09-18 10:14:00,771 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 10:14:00,772 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label23_true-unreach-call.c [2018-09-18 10:14:00,792 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71c4b44e3/5ef188be97d34bec92313ec28c523e22/FLAG75025e00a [2018-09-18 10:14:00,811 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71c4b44e3/5ef188be97d34bec92313ec28c523e22 [2018-09-18 10:14:00,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 10:14:00,825 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 10:14:00,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 10:14:00,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 10:14:00,833 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 10:14:00,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:14:00" (1/1) ... [2018-09-18 10:14:00,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29c08cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:14:00, skipping insertion in model container [2018-09-18 10:14:00,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:14:00" (1/1) ... [2018-09-18 10:14:00,849 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 10:14:01,631 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:14:01,651 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 10:14:01,914 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:14:01,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:14:01 WrapperNode [2018-09-18 10:14:01,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 10:14:01,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 10:14:01,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 10:14:01,986 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 10:14:01,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:14:01" (1/1) ... [2018-09-18 10:14:02,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:14:01" (1/1) ... [2018-09-18 10:14:02,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 10:14:02,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 10:14:02,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 10:14:02,148 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 10:14:02,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:14:01" (1/1) ... [2018-09-18 10:14:02,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:14:01" (1/1) ... [2018-09-18 10:14:02,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:14:01" (1/1) ... [2018-09-18 10:14:02,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:14:01" (1/1) ... [2018-09-18 10:14:02,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:14:01" (1/1) ... [2018-09-18 10:14:02,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:14:01" (1/1) ... [2018-09-18 10:14:02,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:14:01" (1/1) ... [2018-09-18 10:14:02,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 10:14:02,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 10:14:02,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 10:14:02,556 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 10:14:02,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:14:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:14:02,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 10:14:02,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 10:14:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 10:14:02,629 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 10:14:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 10:14:02,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 10:14:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 10:14:02,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 10:14:07,620 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 10:14:07,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:14:07 BoogieIcfgContainer [2018-09-18 10:14:07,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 10:14:07,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 10:14:07,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 10:14:07,625 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 10:14:07,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 10:14:00" (1/3) ... [2018-09-18 10:14:07,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39042be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:14:07, skipping insertion in model container [2018-09-18 10:14:07,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:14:01" (2/3) ... [2018-09-18 10:14:07,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39042be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:14:07, skipping insertion in model container [2018-09-18 10:14:07,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:14:07" (3/3) ... [2018-09-18 10:14:07,630 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label23_true-unreach-call.c [2018-09-18 10:14:07,640 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 10:14:07,649 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 10:14:07,705 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 10:14:07,706 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 10:14:07,707 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 10:14:07,707 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 10:14:07,707 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 10:14:07,707 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 10:14:07,707 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 10:14:07,707 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 10:14:07,708 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 10:14:07,736 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-09-18 10:14:07,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-18 10:14:07,756 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:14:07,757 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] [2018-09-18 10:14:07,758 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:14:07,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1250104911, now seen corresponding path program 1 times [2018-09-18 10:14:07,767 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:14:07,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:07,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:07,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:07,823 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:14:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:08,636 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4 [2018-09-18 10:14:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:14:08,958 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:14:08,958 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 10:14:08,959 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:14:08,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 10:14:08,981 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 10:14:08,982 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 10:14:08,985 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-09-18 10:14:12,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:14:12,221 INFO L93 Difference]: Finished difference Result 1084 states and 1945 transitions. [2018-09-18 10:14:12,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 10:14:12,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2018-09-18 10:14:12,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:14:12,253 INFO L225 Difference]: With dead ends: 1084 [2018-09-18 10:14:12,253 INFO L226 Difference]: Without dead ends: 766 [2018-09-18 10:14:12,262 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 10:14:12,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2018-09-18 10:14:12,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 524. [2018-09-18 10:14:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-09-18 10:14:12,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 918 transitions. [2018-09-18 10:14:12,378 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 918 transitions. Word has length 178 [2018-09-18 10:14:12,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:14:12,380 INFO L480 AbstractCegarLoop]: Abstraction has 524 states and 918 transitions. [2018-09-18 10:14:12,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 10:14:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 918 transitions. [2018-09-18 10:14:12,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-09-18 10:14:12,397 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:14:12,398 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] [2018-09-18 10:14:12,400 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:14:12,401 INFO L82 PathProgramCache]: Analyzing trace with hash -217139872, now seen corresponding path program 1 times [2018-09-18 10:14:12,401 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:14:12,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:12,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:12,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:12,403 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:14:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:12,856 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:14:13,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:14:13,109 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:14:13,109 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 10:14:13,109 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:14:13,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:14:13,113 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:14:13,113 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 10:14:13,114 INFO L87 Difference]: Start difference. First operand 524 states and 918 transitions. Second operand 5 states. [2018-09-18 10:14:16,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:14:16,629 INFO L93 Difference]: Finished difference Result 1614 states and 2930 transitions. [2018-09-18 10:14:16,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:14:16,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2018-09-18 10:14:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:14:16,650 INFO L225 Difference]: With dead ends: 1614 [2018-09-18 10:14:16,650 INFO L226 Difference]: Without dead ends: 1096 [2018-09-18 10:14:16,656 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 10:14:16,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2018-09-18 10:14:16,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1073. [2018-09-18 10:14:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2018-09-18 10:14:16,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1769 transitions. [2018-09-18 10:14:16,728 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1769 transitions. Word has length 189 [2018-09-18 10:14:16,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:14:16,729 INFO L480 AbstractCegarLoop]: Abstraction has 1073 states and 1769 transitions. [2018-09-18 10:14:16,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:14:16,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1769 transitions. [2018-09-18 10:14:16,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-09-18 10:14:16,734 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:14:16,734 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] [2018-09-18 10:14:16,734 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:14:16,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1010977333, now seen corresponding path program 1 times [2018-09-18 10:14:16,735 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:14:16,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:16,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:16,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:16,736 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:14:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:17,034 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:14:17,034 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:14:17,034 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 10:14:17,035 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:14:17,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:14:17,036 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:14:17,036 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:14:17,036 INFO L87 Difference]: Start difference. First operand 1073 states and 1769 transitions. Second operand 3 states. [2018-09-18 10:14:19,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:14:19,345 INFO L93 Difference]: Finished difference Result 3100 states and 5252 transitions. [2018-09-18 10:14:19,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:14:19,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2018-09-18 10:14:19,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:14:19,366 INFO L225 Difference]: With dead ends: 3100 [2018-09-18 10:14:19,366 INFO L226 Difference]: Without dead ends: 2033 [2018-09-18 10:14:19,372 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:14:19,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2018-09-18 10:14:19,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 2030. [2018-09-18 10:14:19,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2030 states. [2018-09-18 10:14:19,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 3203 transitions. [2018-09-18 10:14:19,458 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 3203 transitions. Word has length 191 [2018-09-18 10:14:19,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:14:19,459 INFO L480 AbstractCegarLoop]: Abstraction has 2030 states and 3203 transitions. [2018-09-18 10:14:19,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:14:19,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 3203 transitions. [2018-09-18 10:14:19,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-09-18 10:14:19,468 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:14:19,468 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-18 10:14:19,468 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:14:19,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1402232081, now seen corresponding path program 1 times [2018-09-18 10:14:19,469 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:14:19,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:19,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:19,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:19,471 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:14:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:14:19,860 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:14:19,860 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 10:14:19,860 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:14:19,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:14:19,861 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:14:19,861 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:14:19,862 INFO L87 Difference]: Start difference. First operand 2030 states and 3203 transitions. Second operand 6 states. [2018-09-18 10:14:22,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:14:22,435 INFO L93 Difference]: Finished difference Result 5883 states and 9834 transitions. [2018-09-18 10:14:22,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 10:14:22,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 193 [2018-09-18 10:14:22,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:14:22,463 INFO L225 Difference]: With dead ends: 5883 [2018-09-18 10:14:22,463 INFO L226 Difference]: Without dead ends: 3859 [2018-09-18 10:14:22,471 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:14:22,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3859 states. [2018-09-18 10:14:22,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3859 to 3792. [2018-09-18 10:14:22,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3792 states. [2018-09-18 10:14:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 5638 transitions. [2018-09-18 10:14:22,613 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 5638 transitions. Word has length 193 [2018-09-18 10:14:22,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:14:22,613 INFO L480 AbstractCegarLoop]: Abstraction has 3792 states and 5638 transitions. [2018-09-18 10:14:22,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:14:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 5638 transitions. [2018-09-18 10:14:22,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-09-18 10:14:22,624 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:14:22,625 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:14:22,625 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:14:22,625 INFO L82 PathProgramCache]: Analyzing trace with hash 943603689, now seen corresponding path program 1 times [2018-09-18 10:14:22,626 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:14:22,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:22,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:22,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:22,627 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:14:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:14:23,002 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:14:23,002 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:14:23,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:23,012 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:14:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:23,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:14:23,547 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-09-18 10:14:23,548 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:14:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:14:23,778 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:14:23,778 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 12 [2018-09-18 10:14:23,778 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:14:23,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:14:23,779 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:14:23,779 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-09-18 10:14:23,779 INFO L87 Difference]: Start difference. First operand 3792 states and 5638 transitions. Second operand 5 states. [2018-09-18 10:14:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:14:27,366 INFO L93 Difference]: Finished difference Result 10320 states and 16160 transitions. [2018-09-18 10:14:27,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:14:27,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 208 [2018-09-18 10:14:27,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:14:27,405 INFO L225 Difference]: With dead ends: 10320 [2018-09-18 10:14:27,406 INFO L226 Difference]: Without dead ends: 6534 [2018-09-18 10:14:27,429 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:14:27,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6534 states. [2018-09-18 10:14:27,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6534 to 6414. [2018-09-18 10:14:27,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6414 states. [2018-09-18 10:14:27,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6414 states to 6414 states and 9151 transitions. [2018-09-18 10:14:27,644 INFO L78 Accepts]: Start accepts. Automaton has 6414 states and 9151 transitions. Word has length 208 [2018-09-18 10:14:27,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:14:27,644 INFO L480 AbstractCegarLoop]: Abstraction has 6414 states and 9151 transitions. [2018-09-18 10:14:27,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:14:27,644 INFO L276 IsEmpty]: Start isEmpty. Operand 6414 states and 9151 transitions. [2018-09-18 10:14:27,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-09-18 10:14:27,661 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:14:27,661 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:14:27,661 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:14:27,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1528109442, now seen corresponding path program 1 times [2018-09-18 10:14:27,662 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:14:27,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:27,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:27,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:27,663 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:14:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:28,194 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-18 10:14:28,227 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:14:28,227 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:14:28,227 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:14:28,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:28,237 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:14:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:28,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:14:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:14:28,816 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:14:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:14:29,341 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:14:29,341 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:14:29,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:29,372 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:14:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:29,803 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:14:29,848 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-18 10:14:29,848 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:14:30,182 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 18 [2018-09-18 10:14:30,596 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-18 10:14:30,601 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 10:14:30,602 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 8, 8, 5] total 15 [2018-09-18 10:14:30,603 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:14:30,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:14:30,603 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:14:30,604 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:14:30,604 INFO L87 Difference]: Start difference. First operand 6414 states and 9151 transitions. Second operand 5 states. [2018-09-18 10:14:32,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:14:32,831 INFO L93 Difference]: Finished difference Result 19146 states and 27693 transitions. [2018-09-18 10:14:32,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 10:14:32,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2018-09-18 10:14:32,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:14:32,924 INFO L225 Difference]: With dead ends: 19146 [2018-09-18 10:14:32,924 INFO L226 Difference]: Without dead ends: 12738 [2018-09-18 10:14:32,956 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 873 GetRequests, 859 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-09-18 10:14:32,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12738 states. [2018-09-18 10:14:33,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12738 to 12714. [2018-09-18 10:14:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12714 states. [2018-09-18 10:14:33,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12714 states to 12714 states and 18161 transitions. [2018-09-18 10:14:33,326 INFO L78 Accepts]: Start accepts. Automaton has 12714 states and 18161 transitions. Word has length 217 [2018-09-18 10:14:33,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:14:33,326 INFO L480 AbstractCegarLoop]: Abstraction has 12714 states and 18161 transitions. [2018-09-18 10:14:33,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:14:33,327 INFO L276 IsEmpty]: Start isEmpty. Operand 12714 states and 18161 transitions. [2018-09-18 10:14:33,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-09-18 10:14:33,351 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:14:33,351 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:14:33,352 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:14:33,352 INFO L82 PathProgramCache]: Analyzing trace with hash -2142918717, now seen corresponding path program 1 times [2018-09-18 10:14:33,352 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:14:33,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:33,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:33,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:33,354 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:14:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 83 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:14:34,113 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:14:34,113 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:14:34,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:34,128 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:14:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:34,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:14:34,582 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 10:14:34,582 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:14:34,669 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 10:14:34,691 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 10:14:34,692 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [6] total 8 [2018-09-18 10:14:34,692 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:14:34,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:14:34,693 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:14:34,693 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-18 10:14:34,694 INFO L87 Difference]: Start difference. First operand 12714 states and 18161 transitions. Second operand 3 states. [2018-09-18 10:14:36,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:14:36,243 INFO L93 Difference]: Finished difference Result 25416 states and 36319 transitions. [2018-09-18 10:14:36,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:14:36,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 269 [2018-09-18 10:14:36,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:14:36,292 INFO L225 Difference]: With dead ends: 25416 [2018-09-18 10:14:36,293 INFO L226 Difference]: Without dead ends: 12708 [2018-09-18 10:14:36,336 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-18 10:14:36,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12708 states. [2018-09-18 10:14:36,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12708 to 12708. [2018-09-18 10:14:36,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12708 states. [2018-09-18 10:14:36,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12708 states to 12708 states and 18146 transitions. [2018-09-18 10:14:36,661 INFO L78 Accepts]: Start accepts. Automaton has 12708 states and 18146 transitions. Word has length 269 [2018-09-18 10:14:36,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:14:36,661 INFO L480 AbstractCegarLoop]: Abstraction has 12708 states and 18146 transitions. [2018-09-18 10:14:36,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:14:36,662 INFO L276 IsEmpty]: Start isEmpty. Operand 12708 states and 18146 transitions. [2018-09-18 10:14:36,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-09-18 10:14:36,686 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:14:36,687 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:14:36,687 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:14:36,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1152525042, now seen corresponding path program 1 times [2018-09-18 10:14:36,688 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:14:36,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:36,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:36,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:36,689 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:14:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:37,277 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-18 10:14:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 89 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:14:37,457 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:14:37,457 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:14:37,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:37,473 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:14:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:37,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:14:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:14:38,010 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:14:38,238 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 89 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:14:38,261 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:14:38,261 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 10:14:38,261 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:14:38,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:14:38,262 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:14:38,262 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-09-18 10:14:38,262 INFO L87 Difference]: Start difference. First operand 12708 states and 18146 transitions. Second operand 5 states. [2018-09-18 10:14:40,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:14:40,789 INFO L93 Difference]: Finished difference Result 35384 states and 51340 transitions. [2018-09-18 10:14:40,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 10:14:40,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2018-09-18 10:14:40,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:14:40,867 INFO L225 Difference]: With dead ends: 35384 [2018-09-18 10:14:40,867 INFO L226 Difference]: Without dead ends: 22682 [2018-09-18 10:14:40,890 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 541 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-09-18 10:14:40,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22682 states. [2018-09-18 10:14:41,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22682 to 21770. [2018-09-18 10:14:41,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21770 states. [2018-09-18 10:14:41,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21770 states to 21770 states and 30954 transitions. [2018-09-18 10:14:41,420 INFO L78 Accepts]: Start accepts. Automaton has 21770 states and 30954 transitions. Word has length 273 [2018-09-18 10:14:41,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:14:41,420 INFO L480 AbstractCegarLoop]: Abstraction has 21770 states and 30954 transitions. [2018-09-18 10:14:41,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:14:41,420 INFO L276 IsEmpty]: Start isEmpty. Operand 21770 states and 30954 transitions. [2018-09-18 10:14:41,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-09-18 10:14:41,452 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:14:41,453 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:14:41,453 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:14:41,453 INFO L82 PathProgramCache]: Analyzing trace with hash 967894443, now seen corresponding path program 1 times [2018-09-18 10:14:41,453 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:14:41,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:41,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:41,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:41,455 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:14:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:42,067 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-18 10:14:42,269 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:14:42,269 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:14:42,269 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:14:42,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:42,280 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:14:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:42,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:14:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:14:42,867 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:14:43,110 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2018-09-18 10:14:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:14:43,339 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:14:43,339 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:14:43,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:43,356 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:14:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:43,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:14:43,940 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:14:43,940 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:14:44,202 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2018-09-18 10:14:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (8)] Exception during sending of exit command (exit): Broken pipe [2018-09-18 10:14:44,760 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:14:44,761 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 10:14:44,761 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:14:44,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:14:44,763 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:14:44,763 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2018-09-18 10:14:44,763 INFO L87 Difference]: Start difference. First operand 21770 states and 30954 transitions. Second operand 9 states. [2018-09-18 10:14:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:14:55,202 INFO L93 Difference]: Finished difference Result 75860 states and 151079 transitions. [2018-09-18 10:14:55,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-18 10:14:55,203 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 294 [2018-09-18 10:14:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:14:55,622 INFO L225 Difference]: With dead ends: 75860 [2018-09-18 10:14:55,622 INFO L226 Difference]: Without dead ends: 54096 [2018-09-18 10:14:55,790 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1242 GetRequests, 1193 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=418, Invalid=2032, Unknown=0, NotChecked=0, Total=2450 [2018-09-18 10:14:55,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54096 states. [2018-09-18 10:14:57,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54096 to 47079. [2018-09-18 10:14:57,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47079 states. [2018-09-18 10:14:57,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47079 states to 47079 states and 64158 transitions. [2018-09-18 10:14:57,645 INFO L78 Accepts]: Start accepts. Automaton has 47079 states and 64158 transitions. Word has length 294 [2018-09-18 10:14:57,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:14:57,645 INFO L480 AbstractCegarLoop]: Abstraction has 47079 states and 64158 transitions. [2018-09-18 10:14:57,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:14:57,646 INFO L276 IsEmpty]: Start isEmpty. Operand 47079 states and 64158 transitions. [2018-09-18 10:14:57,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-09-18 10:14:57,718 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:14:57,718 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:14:57,718 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:14:57,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1889915048, now seen corresponding path program 1 times [2018-09-18 10:14:57,719 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:14:57,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:57,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:57,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:14:57,720 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:14:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:58,065 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 128 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:14:58,065 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:14:58,065 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:14:58,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:58,076 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:14:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:58,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:14:58,629 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-18 10:14:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:14:59,188 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:14:59,518 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 10:14:59,717 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 10:14:59,903 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 128 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:14:59,925 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:14:59,925 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 [2018-09-18 10:14:59,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:14:59,941 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:15:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:15:00,421 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:15:00,515 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:15:00,516 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:15:00,897 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 122 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:15:00,900 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:15:00,901 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 8, 8] total 13 [2018-09-18 10:15:00,901 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:15:00,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:15:00,903 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:15:00,903 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:15:00,903 INFO L87 Difference]: Start difference. First operand 47079 states and 64158 transitions. Second operand 6 states. [2018-09-18 10:15:05,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:15:05,083 INFO L93 Difference]: Finished difference Result 104656 states and 161857 transitions. [2018-09-18 10:15:05,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-18 10:15:05,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 305 [2018-09-18 10:15:05,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:15:05,404 INFO L225 Difference]: With dead ends: 104656 [2018-09-18 10:15:05,404 INFO L226 Difference]: Without dead ends: 57603 [2018-09-18 10:15:05,527 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1233 GetRequests, 1215 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2018-09-18 10:15:05,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57603 states. [2018-09-18 10:15:07,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57603 to 54894. [2018-09-18 10:15:07,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54894 states. [2018-09-18 10:15:07,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54894 states to 54894 states and 73949 transitions. [2018-09-18 10:15:07,568 INFO L78 Accepts]: Start accepts. Automaton has 54894 states and 73949 transitions. Word has length 305 [2018-09-18 10:15:07,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:15:07,569 INFO L480 AbstractCegarLoop]: Abstraction has 54894 states and 73949 transitions. [2018-09-18 10:15:07,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:15:07,569 INFO L276 IsEmpty]: Start isEmpty. Operand 54894 states and 73949 transitions. [2018-09-18 10:15:07,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-09-18 10:15:07,615 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:15:07,616 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 10:15:07,616 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:15:07,616 INFO L82 PathProgramCache]: Analyzing trace with hash 780645126, now seen corresponding path program 1 times [2018-09-18 10:15:07,616 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:15:07,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:15:07,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:15:07,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:15:07,617 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:15:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:15:08,240 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:15:08,240 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:15:08,240 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:15:08,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:15:08,257 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:15:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:15:08,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:15:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-09-18 10:15:08,678 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:15:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-09-18 10:15:08,905 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 10:15:08,905 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-18 10:15:08,905 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:15:08,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:15:08,906 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:15:08,906 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-18 10:15:08,906 INFO L87 Difference]: Start difference. First operand 54894 states and 73949 transitions. Second operand 3 states. [2018-09-18 10:15:10,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:15:10,807 INFO L93 Difference]: Finished difference Result 123330 states and 167693 transitions. [2018-09-18 10:15:10,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:15:10,808 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 317 [2018-09-18 10:15:10,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:15:11,585 INFO L225 Difference]: With dead ends: 123330 [2018-09-18 10:15:11,585 INFO L226 Difference]: Without dead ends: 68890 [2018-09-18 10:15:11,674 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 632 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-18 10:15:11,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68890 states. [2018-09-18 10:15:12,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68890 to 68845. [2018-09-18 10:15:12,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68845 states. [2018-09-18 10:15:13,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68845 states to 68845 states and 90828 transitions. [2018-09-18 10:15:13,121 INFO L78 Accepts]: Start accepts. Automaton has 68845 states and 90828 transitions. Word has length 317 [2018-09-18 10:15:13,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:15:13,122 INFO L480 AbstractCegarLoop]: Abstraction has 68845 states and 90828 transitions. [2018-09-18 10:15:13,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:15:13,122 INFO L276 IsEmpty]: Start isEmpty. Operand 68845 states and 90828 transitions. [2018-09-18 10:15:13,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-09-18 10:15:13,163 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:15:13,164 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:15:13,164 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:15:13,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1856147380, now seen corresponding path program 1 times [2018-09-18 10:15:13,164 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:15:13,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:15:13,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:15:13,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:15:13,165 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:15:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:15:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 143 proven. 46 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-18 10:15:13,635 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:15:13,635 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:15:13,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:15:13,643 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:15:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:15:13,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:15:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-09-18 10:15:14,012 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:15:14,368 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 10:15:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 159 proven. 20 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-09-18 10:15:14,544 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:15:14,544 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:15:14,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:15:14,560 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:15:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:15:15,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:15:15,290 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-09-18 10:15:15,291 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:15:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 159 proven. 20 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-09-18 10:15:15,431 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:15:15,432 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 21 [2018-09-18 10:15:15,432 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:15:15,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-18 10:15:15,433 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-18 10:15:15,433 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2018-09-18 10:15:15,433 INFO L87 Difference]: Start difference. First operand 68845 states and 90828 transitions. Second operand 13 states. [2018-09-18 10:16:19,034 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2018-09-18 10:16:22,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:16:22,436 INFO L93 Difference]: Finished difference Result 850854 states and 1567698 transitions. [2018-09-18 10:16:22,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-09-18 10:16:22,436 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 324 [2018-09-18 10:16:22,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:16:29,539 INFO L225 Difference]: With dead ends: 850854 [2018-09-18 10:16:29,539 INFO L226 Difference]: Without dead ends: 782035 [2018-09-18 10:16:30,326 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1561 GetRequests, 1413 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8699 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2668, Invalid=19384, Unknown=0, NotChecked=0, Total=22052 [2018-09-18 10:16:30,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782035 states. [2018-09-18 10:16:59,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782035 to 755499. [2018-09-18 10:16:59,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755499 states. [2018-09-18 10:17:26,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755499 states to 755499 states and 1169481 transitions. [2018-09-18 10:17:26,430 INFO L78 Accepts]: Start accepts. Automaton has 755499 states and 1169481 transitions. Word has length 324 [2018-09-18 10:17:26,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:17:26,430 INFO L480 AbstractCegarLoop]: Abstraction has 755499 states and 1169481 transitions. [2018-09-18 10:17:26,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-18 10:17:26,430 INFO L276 IsEmpty]: Start isEmpty. Operand 755499 states and 1169481 transitions. [2018-09-18 10:17:26,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-09-18 10:17:26,588 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:17:26,588 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:17:26,589 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:17:26,589 INFO L82 PathProgramCache]: Analyzing trace with hash 13108100, now seen corresponding path program 1 times [2018-09-18 10:17:26,589 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:17:26,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:17:26,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:17:26,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:17:26,590 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:17:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:17:26,947 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 Received shutdown request... [2018-09-18 10:17:27,001 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 10:17:27,006 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 10:17:27,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 10:17:27 BoogieIcfgContainer [2018-09-18 10:17:27,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 10:17:27,008 INFO L168 Benchmark]: Toolchain (without parser) took 206185.71 ms. Allocated memory was 1.5 GB in the beginning and 7.3 GB in the end (delta: 5.8 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 3.8 GB. Max. memory is 7.1 GB. [2018-09-18 10:17:27,011 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 10:17:27,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1158.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-09-18 10:17:27,013 INFO L168 Benchmark]: Boogie Procedure Inliner took 162.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-18 10:17:27,013 INFO L168 Benchmark]: Boogie Preprocessor took 406.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 798.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -933.9 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. [2018-09-18 10:17:27,014 INFO L168 Benchmark]: RCFGBuilder took 5065.62 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: 272.2 MB). Peak memory consumption was 272.2 MB. Max. memory is 7.1 GB. [2018-09-18 10:17:27,015 INFO L168 Benchmark]: TraceAbstraction took 199385.23 ms. Allocated memory was 2.3 GB in the beginning and 7.3 GB in the end (delta: 5.0 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. [2018-09-18 10:17:27,023 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 1158.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 162.29 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 406.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 798.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -933.9 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5065.62 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: 272.2 MB). Peak memory consumption was 272.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199385.23 ms. Allocated memory was 2.3 GB in the beginning and 7.3 GB in the end (delta: 5.0 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1548]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1548). Cancelled while BasicCegarLoop was analyzing trace of length 334 with TraceHistMax 4, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 332 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 199.3s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 115.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2594 SDtfs, 20504 SDslu, 4045 SDs, 0 SdLazy, 31988 SolverSat, 9143 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 49.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7101 GetRequests, 6814 SyntacticMatches, 11 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9377 ImplicationChecksByTransitivity, 11.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=755499occurred in iteration=12, 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: 63.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 37698 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 6305 NumberOfCodeBlocks, 6305 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 9616 ConstructedInterpolants, 0 QuantifiedInterpolants, 5653465 SizeOfPredicates, 43 NumberOfNonLiveVariables, 14125 ConjunctsInSsa, 145 ConjunctsInUnsatCore, 36 InterpolantComputations, 11 PerfectInterpolantSequences, 3704/3900 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_label23_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_10-17-27-038.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label23_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_10-17-27-038.csv Completed graceful shutdown