java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:27:20,685 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:27:20,689 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:27:20,705 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:27:20,705 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:27:20,708 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:27:20,710 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:27:20,712 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:27:20,715 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:27:20,722 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:27:20,723 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:27:20,724 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:27:20,728 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:27:20,732 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:27:20,733 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:27:20,734 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:27:20,735 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:27:20,736 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:27:20,741 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:27:20,743 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:27:20,748 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:27:20,750 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:27:20,754 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 01:27:20,754 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 01:27:20,755 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 01:27:20,755 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 01:27:20,756 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 01:27:20,757 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 01:27:20,758 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 01:27:20,759 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 01:27:20,759 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 01:27:20,760 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 01:27:20,762 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:27:20,789 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:27:20,789 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:27:20,790 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:27:20,790 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:27:20,790 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:27:20,791 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:27:20,791 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:27:20,791 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:27:20,791 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:27:20,791 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:27:20,792 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:27:20,793 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:27:20,793 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:27:20,793 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:27:20,794 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:27:20,794 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:27:20,794 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:27:20,794 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:27:20,795 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:27:20,795 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:27:20,795 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:27:20,795 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:27:20,795 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:27:20,797 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:27:20,798 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:27:20,798 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:27:20,798 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:27:20,798 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:27:20,799 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:27:20,799 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:27:20,799 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:27:20,799 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:27:20,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:27:20,800 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:27:20,800 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:27:20,800 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:27:20,853 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:27:20,867 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:27:20,870 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:27:20,871 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:27:20,871 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:27:20,872 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label16_true-unreach-call.c [2018-10-25 01:27:20,935 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e4fdec6d9/b5a27828daec4f64b56eb3c17072e100/FLAG69e8900b5 [2018-10-25 01:27:21,585 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:27:21,585 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label16_true-unreach-call.c [2018-10-25 01:27:21,602 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e4fdec6d9/b5a27828daec4f64b56eb3c17072e100/FLAG69e8900b5 [2018-10-25 01:27:21,623 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e4fdec6d9/b5a27828daec4f64b56eb3c17072e100 [2018-10-25 01:27:21,635 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:27:21,637 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:27:21,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:27:21,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:27:21,646 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:27:21,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:27:21" (1/1) ... [2018-10-25 01:27:21,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ae84d2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:21, skipping insertion in model container [2018-10-25 01:27:21,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:27:21" (1/1) ... [2018-10-25 01:27:21,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:27:21,760 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:27:22,509 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:27:22,514 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:27:22,717 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:27:22,736 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:27:22,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:22 WrapperNode [2018-10-25 01:27:22,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:27:22,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:27:22,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:27:22,738 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:27:22,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:22" (1/1) ... [2018-10-25 01:27:22,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:22" (1/1) ... [2018-10-25 01:27:23,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:27:23,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:27:23,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:27:23,011 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:27:23,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:22" (1/1) ... [2018-10-25 01:27:23,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:22" (1/1) ... [2018-10-25 01:27:23,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:22" (1/1) ... [2018-10-25 01:27:23,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:22" (1/1) ... [2018-10-25 01:27:23,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:22" (1/1) ... [2018-10-25 01:27:23,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:22" (1/1) ... [2018-10-25 01:27:23,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:22" (1/1) ... [2018-10-25 01:27:23,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:27:23,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:27:23,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:27:23,164 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:27:23,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 01:27:23,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:27:23,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:27:23,221 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:27:23,221 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:27:23,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:27:23,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:27:23,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:27:23,222 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:27:27,767 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:27:27,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:27:27 BoogieIcfgContainer [2018-10-25 01:27:27,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:27:27,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:27:27,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:27:27,775 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:27:27,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:27:21" (1/3) ... [2018-10-25 01:27:27,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b45b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:27:27, skipping insertion in model container [2018-10-25 01:27:27,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:22" (2/3) ... [2018-10-25 01:27:27,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b45b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:27:27, skipping insertion in model container [2018-10-25 01:27:27,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:27:27" (3/3) ... [2018-10-25 01:27:27,783 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label16_true-unreach-call.c [2018-10-25 01:27:27,792 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:27:27,801 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:27:27,820 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:27:27,862 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:27:27,862 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:27:27,862 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:27:27,863 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:27:27,863 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:27:27,863 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:27:27,863 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:27:27,863 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:27:27,894 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-25 01:27:27,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-25 01:27:27,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:27:27,906 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] [2018-10-25 01:27:27,909 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:27:27,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:27:27,916 INFO L82 PathProgramCache]: Analyzing trace with hash -328635820, now seen corresponding path program 1 times [2018-10-25 01:27:27,918 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:27:27,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:27,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:27:27,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:27,978 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:27:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:27:28,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:27:28,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:27:28,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:27:28,504 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:27:28,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:27:28,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:27:28,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:27:28,526 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-25 01:27:31,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:27:31,573 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-10-25 01:27:31,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:27:31,576 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-10-25 01:27:31,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:27:31,603 INFO L225 Difference]: With dead ends: 985 [2018-10-25 01:27:31,604 INFO L226 Difference]: Without dead ends: 686 [2018-10-25 01:27:31,612 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:27:31,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-10-25 01:27:31,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-10-25 01:27:31,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-10-25 01:27:31,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-10-25 01:27:31,717 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 50 [2018-10-25 01:27:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:27:31,717 INFO L481 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-10-25 01:27:31,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:27:31,718 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-10-25 01:27:31,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-25 01:27:31,729 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:27:31,730 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:27:31,730 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:27:31,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:27:31,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1947059533, now seen corresponding path program 1 times [2018-10-25 01:27:31,731 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:27:31,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:31,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:27:31,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:31,734 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:27:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:27:32,104 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:27:32,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:27:32,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:27:32,105 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:27:32,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:27:32,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:27:32,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:27:32,108 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-10-25 01:27:37,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:27:37,542 INFO L93 Difference]: Finished difference Result 2339 states and 3736 transitions. [2018-10-25 01:27:37,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:27:37,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-10-25 01:27:37,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:27:37,558 INFO L225 Difference]: With dead ends: 2339 [2018-10-25 01:27:37,558 INFO L226 Difference]: Without dead ends: 1659 [2018-10-25 01:27:37,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:27:37,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2018-10-25 01:27:37,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1642. [2018-10-25 01:27:37,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2018-10-25 01:27:37,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2356 transitions. [2018-10-25 01:27:37,638 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2356 transitions. Word has length 131 [2018-10-25 01:27:37,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:27:37,639 INFO L481 AbstractCegarLoop]: Abstraction has 1642 states and 2356 transitions. [2018-10-25 01:27:37,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:27:37,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2356 transitions. [2018-10-25 01:27:37,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-25 01:27:37,646 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:27:37,647 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:27:37,647 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:27:37,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:27:37,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1463851825, now seen corresponding path program 1 times [2018-10-25 01:27:37,648 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:27:37,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:37,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:27:37,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:37,649 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:27:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:27:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:27:37,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:27:37,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:27:37,972 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:27:37,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:27:37,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:27:37,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:27:37,975 INFO L87 Difference]: Start difference. First operand 1642 states and 2356 transitions. Second operand 4 states. [2018-10-25 01:27:41,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:27:41,494 INFO L93 Difference]: Finished difference Result 6013 states and 9035 transitions. [2018-10-25 01:27:41,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:27:41,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 182 [2018-10-25 01:27:41,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:27:41,526 INFO L225 Difference]: With dead ends: 6013 [2018-10-25 01:27:41,526 INFO L226 Difference]: Without dead ends: 4377 [2018-10-25 01:27:41,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:27:41,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2018-10-25 01:27:41,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 4354. [2018-10-25 01:27:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4354 states. [2018-10-25 01:27:41,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 6089 transitions. [2018-10-25 01:27:41,685 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 6089 transitions. Word has length 182 [2018-10-25 01:27:41,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:27:41,686 INFO L481 AbstractCegarLoop]: Abstraction has 4354 states and 6089 transitions. [2018-10-25 01:27:41,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:27:41,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 6089 transitions. [2018-10-25 01:27:41,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-25 01:27:41,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:27:41,698 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:27:41,698 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:27:41,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:27:41,699 INFO L82 PathProgramCache]: Analyzing trace with hash -572064998, now seen corresponding path program 1 times [2018-10-25 01:27:41,699 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:27:41,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:41,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:27:41,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:41,700 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:27:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:27:41,964 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:27:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 86 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:27:42,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:27:42,083 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:27:42,084 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 227 with the following transitions: [2018-10-25 01:27:42,086 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [618], [623], [625], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:27:42,155 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:27:42,156 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:27:43,203 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:27:43,205 INFO L272 AbstractInterpreter]: Visited 106 different actions 106 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-25 01:27:43,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:27:43,251 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:27:43,967 INFO L232 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 73.55% of their original sizes. [2018-10-25 01:27:43,967 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:27:44,221 INFO L413 sIntCurrentIteration]: We have 225 unified AI predicates [2018-10-25 01:27:44,222 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:27:44,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:27:44,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 01:27:44,223 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:27:44,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:27:44,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:27:44,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:27:44,225 INFO L87 Difference]: Start difference. First operand 4354 states and 6089 transitions. Second operand 6 states. [2018-10-25 01:28:23,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:28:23,044 INFO L93 Difference]: Finished difference Result 8894 states and 12396 transitions. [2018-10-25 01:28:23,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:28:23,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 226 [2018-10-25 01:28:23,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:28:23,070 INFO L225 Difference]: With dead ends: 8894 [2018-10-25 01:28:23,071 INFO L226 Difference]: Without dead ends: 4546 [2018-10-25 01:28:23,088 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:28:23,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2018-10-25 01:28:23,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 4544. [2018-10-25 01:28:23,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4544 states. [2018-10-25 01:28:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4544 states to 4544 states and 6289 transitions. [2018-10-25 01:28:23,210 INFO L78 Accepts]: Start accepts. Automaton has 4544 states and 6289 transitions. Word has length 226 [2018-10-25 01:28:23,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:28:23,211 INFO L481 AbstractCegarLoop]: Abstraction has 4544 states and 6289 transitions. [2018-10-25 01:28:23,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:28:23,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4544 states and 6289 transitions. [2018-10-25 01:28:23,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-10-25 01:28:23,228 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:28:23,229 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:28:23,229 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:28:23,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:28:23,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1720249895, now seen corresponding path program 1 times [2018-10-25 01:28:23,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:28:23,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:28:23,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:28:23,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:28:23,231 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:28:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:28:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-10-25 01:28:23,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:28:23,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 01:28:23,555 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:28:23,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:28:23,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:28:23,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:28:23,556 INFO L87 Difference]: Start difference. First operand 4544 states and 6289 transitions. Second operand 3 states. [2018-10-25 01:28:26,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:28:26,450 INFO L93 Difference]: Finished difference Result 10607 states and 15170 transitions. [2018-10-25 01:28:26,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:28:26,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 320 [2018-10-25 01:28:26,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:28:26,481 INFO L225 Difference]: With dead ends: 10607 [2018-10-25 01:28:26,481 INFO L226 Difference]: Without dead ends: 6259 [2018-10-25 01:28:26,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:28:26,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6259 states. [2018-10-25 01:28:26,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6259 to 6259. [2018-10-25 01:28:26,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6259 states. [2018-10-25 01:28:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6259 states to 6259 states and 8415 transitions. [2018-10-25 01:28:26,659 INFO L78 Accepts]: Start accepts. Automaton has 6259 states and 8415 transitions. Word has length 320 [2018-10-25 01:28:26,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:28:26,660 INFO L481 AbstractCegarLoop]: Abstraction has 6259 states and 8415 transitions. [2018-10-25 01:28:26,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:28:26,660 INFO L276 IsEmpty]: Start isEmpty. Operand 6259 states and 8415 transitions. [2018-10-25 01:28:26,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-10-25 01:28:26,678 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:28:26,678 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:28:26,679 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:28:26,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:28:26,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1616066757, now seen corresponding path program 1 times [2018-10-25 01:28:26,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:28:26,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:28:26,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:28:26,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:28:26,682 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:28:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:28:27,166 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-25 01:28:27,166 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:28:27,167 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:28:27,167 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 354 with the following transitions: [2018-10-25 01:28:27,167 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [578], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:28:27,174 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:28:27,174 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:28:28,573 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:28:28,573 INFO L272 AbstractInterpreter]: Visited 126 different actions 376 times. Merged at 7 different actions 20 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:28:28,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:28:28,614 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:28:30,576 INFO L232 lantSequenceWeakener]: Weakened 133 states. On average, predicates are now at 74.61% of their original sizes. [2018-10-25 01:28:30,576 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:28:31,619 INFO L413 sIntCurrentIteration]: We have 352 unified AI predicates [2018-10-25 01:28:31,620 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:28:31,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:28:31,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-10-25 01:28:31,621 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:28:31,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-25 01:28:31,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-25 01:28:31,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-10-25 01:28:31,623 INFO L87 Difference]: Start difference. First operand 6259 states and 8415 transitions. Second operand 15 states. Received shutdown request... [2018-10-25 01:31:30,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-25 01:31:30,211 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 01:31:30,216 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 01:31:30,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 01:31:30 BoogieIcfgContainer [2018-10-25 01:31:30,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 01:31:30,217 INFO L168 Benchmark]: Toolchain (without parser) took 248581.63 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 37.9 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-10-25 01:31:30,219 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-10-25 01:31:30,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1098.36 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-25 01:31:30,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 272.64 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -806.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-25 01:31:30,221 INFO L168 Benchmark]: Boogie Preprocessor took 153.24 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 01:31:30,222 INFO L168 Benchmark]: RCFGBuilder took 4604.26 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.8 MB). Peak memory consumption was 187.8 MB. Max. memory is 7.1 GB. [2018-10-25 01:31:30,223 INFO L168 Benchmark]: TraceAbstraction took 242447.01 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.4 GB in the end (delta: 603.7 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-10-25 01:31:30,230 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 1098.36 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 272.64 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -806.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.24 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4604.26 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.8 MB). Peak memory consumption was 187.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 242447.01 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.4 GB in the end (delta: 603.7 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 135). Cancelled while BasicCegarLoop was constructing difference of abstraction (6259states) and FLOYD_HOARE automaton (currently 20 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (7629 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 242.3s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 232.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1486 SDtfs, 4390 SDslu, 896 SDs, 0 SdLazy, 8556 SolverSat, 1322 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 209.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 607 GetRequests, 533 SyntacticMatches, 40 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6259occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9977405975499561 AbsIntWeakeningRatio, 0.10918544194107452 AbsIntAvgWeakeningVarsNumRemoved, 7.2374350086655115 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1262 NumberOfCodeBlocks, 1262 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1256 ConstructedInterpolants, 0 QuantifiedInterpolants, 749252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 797/867 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown