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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/ludcmp_false-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 22:36:08,727 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 22:36:08,732 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 22:36:08,753 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 22:36:08,753 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 22:36:08,755 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 22:36:08,757 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 22:36:08,761 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 22:36:08,764 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 22:36:08,770 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 22:36:08,771 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 22:36:08,772 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 22:36:08,773 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 22:36:08,774 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 22:36:08,777 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 22:36:08,778 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 22:36:08,778 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 22:36:08,783 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 22:36:08,787 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 22:36:08,789 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 22:36:08,791 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 22:36:08,793 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 22:36:08,794 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 22:36:08,794 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 22:36:08,794 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 22:36:08,795 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 22:36:08,798 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 22:36:08,800 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 22:36:08,803 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 22:36:08,804 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 22:36:08,804 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 22:36:08,805 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 22:36:08,805 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 22:36:08,805 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 22:36:08,807 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 22:36:08,808 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 22:36:08,809 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 22:36:08,837 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 22:36:08,838 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 22:36:08,839 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 22:36:08,840 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 22:36:08,840 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 22:36:08,840 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 22:36:08,841 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 22:36:08,841 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 22:36:08,841 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 22:36:08,841 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 22:36:08,842 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 22:36:08,843 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 22:36:08,843 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 22:36:08,843 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 22:36:08,844 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 22:36:08,844 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 22:36:08,844 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 22:36:08,844 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 22:36:08,844 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 22:36:08,845 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:36:08,845 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 22:36:08,845 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 22:36:08,845 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 22:36:08,845 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 22:36:08,846 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 22:36:08,846 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 22:36:08,846 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 22:36:08,846 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 22:36:08,911 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 22:36:08,927 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 22:36:08,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 22:36:08,933 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 22:36:08,934 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 22:36:08,934 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/ludcmp_false-unreach-call.i [2018-11-06 22:36:09,008 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbdd945bc/95c3052fb18d4bdc92f8bdfaeb086a6b/FLAGf7ecc2135 [2018-11-06 22:36:09,488 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 22:36:09,488 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/ludcmp_false-unreach-call.i [2018-11-06 22:36:09,502 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbdd945bc/95c3052fb18d4bdc92f8bdfaeb086a6b/FLAGf7ecc2135 [2018-11-06 22:36:09,528 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbdd945bc/95c3052fb18d4bdc92f8bdfaeb086a6b [2018-11-06 22:36:09,541 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 22:36:09,543 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 22:36:09,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 22:36:09,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 22:36:09,550 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 22:36:09,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:09" (1/1) ... [2018-11-06 22:36:09,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ec1c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:09, skipping insertion in model container [2018-11-06 22:36:09,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:09" (1/1) ... [2018-11-06 22:36:09,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 22:36:09,601 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 22:36:09,848 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:36:09,973 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 22:36:10,013 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:36:10,176 INFO L193 MainTranslator]: Completed translation [2018-11-06 22:36:10,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10 WrapperNode [2018-11-06 22:36:10,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 22:36:10,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 22:36:10,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 22:36:10,179 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 22:36:10,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2018-11-06 22:36:10,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2018-11-06 22:36:10,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 22:36:10,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 22:36:10,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 22:36:10,580 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 22:36:10,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2018-11-06 22:36:10,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2018-11-06 22:36:10,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2018-11-06 22:36:10,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2018-11-06 22:36:10,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2018-11-06 22:36:10,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2018-11-06 22:36:10,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2018-11-06 22:36:10,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 22:36:10,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 22:36:10,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 22:36:10,791 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 22:36:10,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (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 [2018-11-06 22:36:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-06 22:36:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-06 22:36:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-06 22:36:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 22:36:10,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:36:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-06 22:36:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-06 22:36:21,016 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:36:21,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:21 BoogieIcfgContainer [2018-11-06 22:36:21,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:36:21,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:36:21,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:36:21,021 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:36:21,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:36:09" (1/3) ... [2018-11-06 22:36:21,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5573d0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:21, skipping insertion in model container [2018-11-06 22:36:21,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (2/3) ... [2018-11-06 22:36:21,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5573d0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:21, skipping insertion in model container [2018-11-06 22:36:21,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:21" (3/3) ... [2018-11-06 22:36:21,026 INFO L112 eAbstractionObserver]: Analyzing ICFG ludcmp_false-unreach-call.i [2018-11-06 22:36:21,036 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:36:21,045 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 22:36:21,062 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 22:36:21,127 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:36:21,128 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:36:21,129 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:36:21,129 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:36:21,129 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:36:21,129 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:36:21,129 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:36:21,130 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:36:21,130 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:36:21,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states. [2018-11-06 22:36:21,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2612 [2018-11-06 22:36:21,339 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:36:21,343 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1] [2018-11-06 22:36:21,346 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:36:21,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:36:21,354 INFO L82 PathProgramCache]: Analyzing trace with hash -564971393, now seen corresponding path program 1 times [2018-11-06 22:36:21,356 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:36:21,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:36:21,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:36:21,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:36:21,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:36:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:36:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:36:27,537 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:36:27,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 22:36:27,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-06 22:36:27,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-06 22:36:27,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-06 22:36:27,562 INFO L87 Difference]: Start difference. First operand 2708 states. Second operand 2 states. [2018-11-06 22:36:27,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:36:27,663 INFO L93 Difference]: Finished difference Result 2811 states and 2865 transitions. [2018-11-06 22:36:27,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 22:36:27,665 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 2611 [2018-11-06 22:36:27,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:36:27,730 INFO L225 Difference]: With dead ends: 2811 [2018-11-06 22:36:27,731 INFO L226 Difference]: Without dead ends: 2624 [2018-11-06 22:36:27,738 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-06 22:36:27,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2018-11-06 22:36:27,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2624. [2018-11-06 22:36:27,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2624 states. [2018-11-06 22:36:27,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 2626 transitions. [2018-11-06 22:36:27,923 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 2626 transitions. Word has length 2611 [2018-11-06 22:36:27,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:36:27,929 INFO L480 AbstractCegarLoop]: Abstraction has 2624 states and 2626 transitions. [2018-11-06 22:36:27,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-06 22:36:27,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 2626 transitions. [2018-11-06 22:36:28,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2613 [2018-11-06 22:36:28,037 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:36:28,039 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1] [2018-11-06 22:36:28,039 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:36:28,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:36:28,040 INFO L82 PathProgramCache]: Analyzing trace with hash -354234059, now seen corresponding path program 1 times [2018-11-06 22:36:28,040 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:36:28,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:36:28,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:36:28,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:36:28,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:36:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:36:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:36:32,934 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:36:32,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:36:32,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:36:32,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:36:32,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:36:32,940 INFO L87 Difference]: Start difference. First operand 2624 states and 2626 transitions. Second operand 4 states. [2018-11-06 22:36:33,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:36:33,108 INFO L93 Difference]: Finished difference Result 2653 states and 2659 transitions. [2018-11-06 22:36:33,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:36:33,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2612 [2018-11-06 22:36:33,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:36:33,126 INFO L225 Difference]: With dead ends: 2653 [2018-11-06 22:36:33,126 INFO L226 Difference]: Without dead ends: 2634 [2018-11-06 22:36:33,129 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:36:33,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2018-11-06 22:36:33,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 2626. [2018-11-06 22:36:33,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2626 states. [2018-11-06 22:36:33,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 2628 transitions. [2018-11-06 22:36:33,178 INFO L78 Accepts]: Start accepts. Automaton has 2626 states and 2628 transitions. Word has length 2612 [2018-11-06 22:36:33,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:36:33,182 INFO L480 AbstractCegarLoop]: Abstraction has 2626 states and 2628 transitions. [2018-11-06 22:36:33,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:36:33,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2626 states and 2628 transitions. [2018-11-06 22:36:33,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2620 [2018-11-06 22:36:33,239 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:36:33,241 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:36:33,241 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:36:33,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:36:33,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1882258580, now seen corresponding path program 1 times [2018-11-06 22:36:33,243 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:36:33,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:36:33,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:36:33,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:36:33,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:36:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:36:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:36:37,824 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:36:37,824 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-11-06 22:36:37,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:36:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:36:38,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:36:41,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:36:41,298 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:36:41,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-11-06 22:36:41,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 22:36:41,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 22:36:41,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:36:41,306 INFO L87 Difference]: Start difference. First operand 2626 states and 2628 transitions. Second operand 7 states. [2018-11-06 22:36:41,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:36:41,809 INFO L93 Difference]: Finished difference Result 2665 states and 2672 transitions. [2018-11-06 22:36:41,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 22:36:41,810 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 2619 [2018-11-06 22:36:41,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:36:41,832 INFO L225 Difference]: With dead ends: 2665 [2018-11-06 22:36:41,832 INFO L226 Difference]: Without dead ends: 2644 [2018-11-06 22:36:41,833 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2623 GetRequests, 2618 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:36:41,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2018-11-06 22:36:41,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2636. [2018-11-06 22:36:41,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2636 states. [2018-11-06 22:36:41,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 2639 transitions. [2018-11-06 22:36:41,884 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 2639 transitions. Word has length 2619 [2018-11-06 22:36:41,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:36:41,890 INFO L480 AbstractCegarLoop]: Abstraction has 2636 states and 2639 transitions. [2018-11-06 22:36:41,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 22:36:41,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 2639 transitions. [2018-11-06 22:36:42,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2627 [2018-11-06 22:36:42,004 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:36:42,006 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:36:42,007 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:36:42,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:36:42,009 INFO L82 PathProgramCache]: Analyzing trace with hash 361182549, now seen corresponding path program 2 times [2018-11-06 22:36:42,009 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:36:42,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:36:42,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:36:42,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:36:42,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:36:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:36:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:36:46,515 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:36:46,515 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-11-06 22:36:46,532 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:37:01,630 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:37:01,630 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:37:01,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:37:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:37:04,031 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:37:04,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-11-06 22:37:04,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 22:37:04,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 22:37:04,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-11-06 22:37:04,035 INFO L87 Difference]: Start difference. First operand 2636 states and 2639 transitions. Second operand 9 states. [2018-11-06 22:37:04,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:37:04,731 INFO L93 Difference]: Finished difference Result 2685 states and 2694 transitions. [2018-11-06 22:37:04,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 22:37:04,732 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 2626 [2018-11-06 22:37:04,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:37:04,751 INFO L225 Difference]: With dead ends: 2685 [2018-11-06 22:37:04,751 INFO L226 Difference]: Without dead ends: 2654 [2018-11-06 22:37:04,753 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2631 GetRequests, 2624 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-11-06 22:37:04,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2018-11-06 22:37:04,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2646. [2018-11-06 22:37:04,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2646 states. [2018-11-06 22:37:04,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 2650 transitions. [2018-11-06 22:37:04,799 INFO L78 Accepts]: Start accepts. Automaton has 2646 states and 2650 transitions. Word has length 2626 [2018-11-06 22:37:04,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:37:04,805 INFO L480 AbstractCegarLoop]: Abstraction has 2646 states and 2650 transitions. [2018-11-06 22:37:04,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 22:37:04,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2646 states and 2650 transitions. [2018-11-06 22:37:04,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2634 [2018-11-06 22:37:04,868 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:37:04,870 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:37:04,870 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:37:04,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:37:04,872 INFO L82 PathProgramCache]: Analyzing trace with hash -698893492, now seen corresponding path program 3 times [2018-11-06 22:37:04,872 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:37:04,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:37:04,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:37:04,873 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:37:04,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:37:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:37:09,465 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:37:09,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:37:09,465 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:37:09,518 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:37:53,442 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-06 22:37:53,442 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:37:53,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:37:56,377 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:37:56,500 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:37:56,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-11-06 22:37:56,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-06 22:37:56,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-06 22:37:56,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2018-11-06 22:37:56,504 INFO L87 Difference]: Start difference. First operand 2646 states and 2650 transitions. Second operand 11 states. [2018-11-06 22:37:56,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:37:56,949 INFO L93 Difference]: Finished difference Result 2705 states and 2716 transitions. [2018-11-06 22:37:56,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:37:56,949 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 2633 [2018-11-06 22:37:56,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:37:56,964 INFO L225 Difference]: With dead ends: 2705 [2018-11-06 22:37:56,965 INFO L226 Difference]: Without dead ends: 2664 [2018-11-06 22:37:56,966 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2639 GetRequests, 2630 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2018-11-06 22:37:56,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2018-11-06 22:37:57,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2656. [2018-11-06 22:37:57,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2656 states. [2018-11-06 22:37:57,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 2661 transitions. [2018-11-06 22:37:57,007 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 2661 transitions. Word has length 2633 [2018-11-06 22:37:57,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:37:57,010 INFO L480 AbstractCegarLoop]: Abstraction has 2656 states and 2661 transitions. [2018-11-06 22:37:57,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-06 22:37:57,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 2661 transitions. [2018-11-06 22:37:57,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2641 [2018-11-06 22:37:57,056 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:37:57,057 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:37:57,058 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:37:57,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:37:57,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1038491275, now seen corresponding path program 4 times [2018-11-06 22:37:57,059 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:37:57,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:37:57,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:37:57,060 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:37:57,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:37:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:38:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:38:01,292 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:38:01,293 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-11-06 22:38:01,302 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:38:02,011 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:38:02,011 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:38:02,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:38:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:38:04,699 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:38:04,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-11-06 22:38:04,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-06 22:38:04,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-06 22:38:04,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-11-06 22:38:04,704 INFO L87 Difference]: Start difference. First operand 2656 states and 2661 transitions. Second operand 13 states. [2018-11-06 22:38:04,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:38:04,881 INFO L93 Difference]: Finished difference Result 2725 states and 2738 transitions. [2018-11-06 22:38:04,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-06 22:38:04,881 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 2640 [2018-11-06 22:38:04,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:38:04,894 INFO L225 Difference]: With dead ends: 2725 [2018-11-06 22:38:04,895 INFO L226 Difference]: Without dead ends: 2674 [2018-11-06 22:38:04,896 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2647 GetRequests, 2636 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-11-06 22:38:04,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2018-11-06 22:38:04,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2666. [2018-11-06 22:38:04,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2666 states. [2018-11-06 22:38:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 2672 transitions. [2018-11-06 22:38:04,937 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 2672 transitions. Word has length 2640 [2018-11-06 22:38:04,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:38:04,939 INFO L480 AbstractCegarLoop]: Abstraction has 2666 states and 2672 transitions. [2018-11-06 22:38:04,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-06 22:38:04,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 2672 transitions. [2018-11-06 22:38:04,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2648 [2018-11-06 22:38:04,994 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:38:04,996 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:38:04,996 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:38:04,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:38:04,998 INFO L82 PathProgramCache]: Analyzing trace with hash -2016335060, now seen corresponding path program 5 times [2018-11-06 22:38:04,998 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:38:04,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:38:04,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:38:04,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:38:04,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:38:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:38:09,265 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:38:09,265 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:38:09,265 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-11-06 22:38:09,275 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:38:09,939 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-06 22:38:09,939 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:38:09,974 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:38:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:38:12,360 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:38:12,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-11-06 22:38:12,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-06 22:38:12,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-06 22:38:12,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2018-11-06 22:38:12,364 INFO L87 Difference]: Start difference. First operand 2666 states and 2672 transitions. Second operand 15 states. [2018-11-06 22:38:12,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:38:12,544 INFO L93 Difference]: Finished difference Result 2745 states and 2760 transitions. [2018-11-06 22:38:12,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 22:38:12,547 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 2647 [2018-11-06 22:38:12,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:38:12,557 INFO L225 Difference]: With dead ends: 2745 [2018-11-06 22:38:12,557 INFO L226 Difference]: Without dead ends: 2684 [2018-11-06 22:38:12,559 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2656 GetRequests, 2642 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=139, Unknown=0, NotChecked=0, Total=240 [2018-11-06 22:38:12,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2018-11-06 22:38:12,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 2676. [2018-11-06 22:38:12,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2676 states. [2018-11-06 22:38:12,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 2683 transitions. [2018-11-06 22:38:12,596 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 2683 transitions. Word has length 2647 [2018-11-06 22:38:12,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:38:12,599 INFO L480 AbstractCegarLoop]: Abstraction has 2676 states and 2683 transitions. [2018-11-06 22:38:12,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-06 22:38:12,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 2683 transitions. [2018-11-06 22:38:12,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2655 [2018-11-06 22:38:12,646 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:38:12,647 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:38:12,647 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:38:12,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:38:12,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1375939179, now seen corresponding path program 6 times [2018-11-06 22:38:12,649 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:38:12,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:38:12,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:38:12,650 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:38:12,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:38:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:38:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:38:17,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:38:17,901 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-11-06 22:38:17,911 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 22:39:29,903 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-11-06 22:39:29,904 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:39:29,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:39:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-11-06 22:39:32,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:39:32,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2018-11-06 22:39:32,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-06 22:39:32,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-06 22:39:32,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-06 22:39:32,934 INFO L87 Difference]: Start difference. First operand 2676 states and 2683 transitions. Second operand 14 states. [2018-11-06 22:39:34,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:39:34,118 INFO L93 Difference]: Finished difference Result 2891 states and 2926 transitions. [2018-11-06 22:39:34,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-06 22:39:34,119 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 2654 [2018-11-06 22:39:34,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:39:34,133 INFO L225 Difference]: With dead ends: 2891 [2018-11-06 22:39:34,134 INFO L226 Difference]: Without dead ends: 2820 [2018-11-06 22:39:34,135 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2680 GetRequests, 2653 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2018-11-06 22:39:34,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2820 states. [2018-11-06 22:39:34,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2820 to 2732. [2018-11-06 22:39:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2732 states. [2018-11-06 22:39:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 2745 transitions. [2018-11-06 22:39:34,184 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 2745 transitions. Word has length 2654 [2018-11-06 22:39:34,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:39:34,186 INFO L480 AbstractCegarLoop]: Abstraction has 2732 states and 2745 transitions. [2018-11-06 22:39:34,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-06 22:39:34,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 2745 transitions. [2018-11-06 22:39:34,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2658 [2018-11-06 22:39:34,234 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:39:34,235 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:39:34,236 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:39:34,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:39:34,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1313597339, now seen corresponding path program 1 times [2018-11-06 22:39:34,236 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:39:34,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:39:34,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:39:34,238 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:39:34,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:39:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-06 22:39:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-06 22:39:43,823 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-06 22:39:44,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:39:44 BoogieIcfgContainer [2018-11-06 22:39:44,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:39:44,060 INFO L168 Benchmark]: Toolchain (without parser) took 214518.01 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 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 2.8 GB. Max. memory is 7.1 GB. [2018-11-06 22:39:44,063 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-11-06 22:39:44,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 632.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-06 22:39:44,066 INFO L168 Benchmark]: Boogie Procedure Inliner took 402.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -827.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2018-11-06 22:39:44,067 INFO L168 Benchmark]: Boogie Preprocessor took 210.37 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2018-11-06 22:39:44,068 INFO L168 Benchmark]: RCFGBuilder took 10226.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 485.7 MB). Peak memory consumption was 485.7 MB. Max. memory is 7.1 GB. [2018-11-06 22:39:44,068 INFO L168 Benchmark]: TraceAbstraction took 203041.26 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.3 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-06 22:39:44,077 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 632.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 402.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -827.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 210.37 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10226.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 485.7 MB). Peak memory consumption was 485.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203041.26 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.3 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_real at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 30. Possible FailurePath: [L9] FCALL double a[50][50], b[50], x[50]; VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L20] int i, j, nmax = 50, n = 5, chkerr; [L21] double eps, w; [L22] eps = 1.0e-6 [L23] i = 0 VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L23] COND TRUE i <= n [L25] w = 0.0 [L26] j = 0 VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L26] COND TRUE j <= n VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L28] FCALL a[i][j] = (i + 1) + (j + 1) VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L29] COND TRUE i == j VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L29] EXPR, FCALL a[i][j] VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L29] FCALL a[i][j] *= 10.0 VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L30] EXPR, FCALL a[i][j] VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L30] w += a[i][j] [L26] j++ VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L26] COND TRUE j <= n VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L28] FCALL a[i][j] = (i + 1) + (j + 1) VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L29] COND FALSE !(i == j) VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L30] EXPR, FCALL a[i][j] VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L30] w += a[i][j] [L26] j++ VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L26] COND TRUE j <= n VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L28] FCALL a[i][j] = (i + 1) + (j + 1) VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L29] COND FALSE !(i == j) VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L30] EXPR, FCALL a[i][j] VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L30] w += a[i][j] [L26] j++ VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L26] COND TRUE j <= n VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L28] FCALL a[i][j] = (i + 1) + (j + 1) VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L29] COND FALSE !(i == j) VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L30] EXPR, FCALL a[i][j] VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L30] w += a[i][j] [L26] j++ VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L26] COND TRUE j <= n VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L28] FCALL a[i][j] = (i + 1) + (j + 1) VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L29] COND FALSE !(i == j) VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L30] EXPR, FCALL a[i][j] VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L30] w += a[i][j] [L26] j++ VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L26] COND TRUE j <= n VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L28] FCALL a[i][j] = (i + 1) + (j + 1) VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L29] COND FALSE !(i == j) VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L30] EXPR, FCALL a[i][j] VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L30] w += a[i][j] [L26] j++ VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L26] COND FALSE !(j <= n) VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L32] CALL __VERIFIER_assert(i==2) [L4] COND TRUE !(cond) VAL [a={20002:0}, b={20007:0}, x={20008:0}] [L5] __VERIFIER_error() VAL [a={20002:0}, b={20007:0}, x={20008:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 2708 locations, 1 error locations. UNSAFE Result, 202.9s OverallTime, 9 OverallIterations, 7 TraceHistogramMax, 3.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21039 SDtfs, 830 SDslu, 54972 SDs, 0 SdLazy, 483 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15882 GetRequests, 15807 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2732occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 136 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 2.0s SsaConstructionTime, 142.4s SatisfiabilityAnalysisTime, 25.4s InterpolantComputationTime, 39518 NumberOfCodeBlocks, 39511 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 36847 ConstructedInterpolants, 0 QuantifiedInterpolants, 102405864 SizeOfPredicates, 12 NumberOfNonLiveVariables, 16086 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 117/574 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...