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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label03_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:44:56,850 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:44:56,856 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:44:56,873 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:44:56,873 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:44:56,874 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:44:56,878 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:44:56,880 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:44:56,884 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:44:56,885 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:44:56,886 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:44:56,886 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:44:56,887 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:44:56,888 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:44:56,890 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:44:56,891 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:44:56,892 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:44:56,894 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:44:56,896 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:44:56,897 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:44:56,898 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:44:56,900 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:44:56,902 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 00:44:56,914 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 00:44:56,942 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:44:56,943 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:44:56,943 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:44:56,944 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:44:56,945 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:44:56,945 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:44:56,945 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:44:56,945 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:44:56,945 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:44:56,946 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:44:56,946 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:44:56,946 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:44:56,948 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:44:56,948 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:44:56,948 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:44:56,949 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:44:56,950 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:44:56,951 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:44:56,951 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:44:56,951 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:44:56,951 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:44:56,951 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:44:56,952 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:44:56,952 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:44:56,952 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:44:56,952 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:44:56,952 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:44:56,953 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:44:56,953 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:44:56,953 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:44:56,953 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:44:56,953 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:44:56,953 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:44:56,954 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:44:57,003 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:44:57,018 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:44:57,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:44:57,025 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:44:57,025 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:44:57,026 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label03_true-unreach-call_false-termination.c [2018-10-27 00:44:57,082 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c2fc54b71/b61f2cfc9ddd4a5fb9c721ec67a2e3c6/FLAGa38c4ca27 [2018-10-27 00:44:57,674 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:44:57,675 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label03_true-unreach-call_false-termination.c [2018-10-27 00:44:57,691 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c2fc54b71/b61f2cfc9ddd4a5fb9c721ec67a2e3c6/FLAGa38c4ca27 [2018-10-27 00:44:57,710 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c2fc54b71/b61f2cfc9ddd4a5fb9c721ec67a2e3c6 [2018-10-27 00:44:57,723 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:44:57,725 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:44:57,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:44:57,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:44:57,733 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:44:57,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:44:57" (1/1) ... [2018-10-27 00:44:57,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a3db508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:44:57, skipping insertion in model container [2018-10-27 00:44:57,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:44:57" (1/1) ... [2018-10-27 00:44:57,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:44:57,826 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:44:58,298 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:44:58,311 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:44:58,466 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:44:58,492 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:44:58,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:44:58 WrapperNode [2018-10-27 00:44:58,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:44:58,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:44:58,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:44:58,494 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:44:58,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:44:58" (1/1) ... [2018-10-27 00:44:58,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:44:58" (1/1) ... [2018-10-27 00:44:58,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:44:58,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:44:58,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:44:58,691 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:44:58,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:44:58" (1/1) ... [2018-10-27 00:44:58,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:44:58" (1/1) ... [2018-10-27 00:44:58,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:44:58" (1/1) ... [2018-10-27 00:44:58,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:44:58" (1/1) ... [2018-10-27 00:44:58,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:44:58" (1/1) ... [2018-10-27 00:44:58,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:44:58" (1/1) ... [2018-10-27 00:44:58,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:44:58" (1/1) ... [2018-10-27 00:44:58,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:44:58,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:44:58,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:44:58,757 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:44:58,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:44:58" (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 [2018-10-27 00:44:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:44:58,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:44:58,862 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:44:58,862 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:44:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:44:58,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:44:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:44:58,863 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:45:02,332 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:45:02,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:45:02 BoogieIcfgContainer [2018-10-27 00:45:02,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:45:02,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:45:02,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:45:02,338 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:45:02,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:44:57" (1/3) ... [2018-10-27 00:45:02,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429a37e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:45:02, skipping insertion in model container [2018-10-27 00:45:02,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:44:58" (2/3) ... [2018-10-27 00:45:02,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429a37e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:45:02, skipping insertion in model container [2018-10-27 00:45:02,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:45:02" (3/3) ... [2018-10-27 00:45:02,342 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label03_true-unreach-call_false-termination.c [2018-10-27 00:45:02,354 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:45:02,363 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:45:02,381 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:45:02,422 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:45:02,422 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:45:02,423 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:45:02,423 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:45:02,423 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:45:02,423 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:45:02,423 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:45:02,424 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:45:02,463 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-27 00:45:02,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-27 00:45:02,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:45:02,480 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] [2018-10-27 00:45:02,483 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:45:02,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:45:02,489 INFO L82 PathProgramCache]: Analyzing trace with hash -304516904, now seen corresponding path program 1 times [2018-10-27 00:45:02,491 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:45:02,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:45:02,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:45:02,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:45:02,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:45:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:45:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:45:03,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:45:03,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:45:03,360 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:45:03,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:45:03,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:45:03,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:45:03,386 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 4 states. [2018-10-27 00:45:05,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:45:05,955 INFO L93 Difference]: Finished difference Result 788 states and 1373 transitions. [2018-10-27 00:45:05,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:45:05,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2018-10-27 00:45:05,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:45:05,980 INFO L225 Difference]: With dead ends: 788 [2018-10-27 00:45:05,981 INFO L226 Difference]: Without dead ends: 545 [2018-10-27 00:45:05,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:45:06,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2018-10-27 00:45:06,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 383. [2018-10-27 00:45:06,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-10-27 00:45:06,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 631 transitions. [2018-10-27 00:45:06,085 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 631 transitions. Word has length 136 [2018-10-27 00:45:06,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:45:06,086 INFO L481 AbstractCegarLoop]: Abstraction has 383 states and 631 transitions. [2018-10-27 00:45:06,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:45:06,086 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 631 transitions. [2018-10-27 00:45:06,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-27 00:45:06,093 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:45:06,094 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:45:06,094 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:45:06,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:45:06,095 INFO L82 PathProgramCache]: Analyzing trace with hash -787094811, now seen corresponding path program 1 times [2018-10-27 00:45:06,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:45:06,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:45:06,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:45:06,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:45:06,097 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:45:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:45:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:45:06,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:45:06,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 00:45:06,559 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:45:06,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 00:45:06,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 00:45:06,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:45:06,562 INFO L87 Difference]: Start difference. First operand 383 states and 631 transitions. Second operand 5 states. [2018-10-27 00:45:07,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:45:07,774 INFO L93 Difference]: Finished difference Result 905 states and 1543 transitions. [2018-10-27 00:45:07,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:45:07,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-10-27 00:45:07,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:45:07,783 INFO L225 Difference]: With dead ends: 905 [2018-10-27 00:45:07,784 INFO L226 Difference]: Without dead ends: 382 [2018-10-27 00:45:07,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:45:07,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-27 00:45:07,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-27 00:45:07,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-27 00:45:07,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 625 transitions. [2018-10-27 00:45:07,814 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 625 transitions. Word has length 145 [2018-10-27 00:45:07,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:45:07,815 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 625 transitions. [2018-10-27 00:45:07,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 00:45:07,815 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 625 transitions. [2018-10-27 00:45:07,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-27 00:45:07,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:45:07,819 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:45:07,819 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:45:07,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:45:07,820 INFO L82 PathProgramCache]: Analyzing trace with hash 259218255, now seen corresponding path program 1 times [2018-10-27 00:45:07,820 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:45:07,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:45:07,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:45:07,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:45:07,822 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:45:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:45:08,091 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:45:08,259 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:45:08,259 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:45:08,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:45:08,260 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:45:08,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:45:08,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:45:08,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:45:08,263 INFO L87 Difference]: Start difference. First operand 382 states and 625 transitions. Second operand 6 states. [2018-10-27 00:45:11,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:45:11,189 INFO L93 Difference]: Finished difference Result 1198 states and 2052 transitions. [2018-10-27 00:45:11,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:45:11,189 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2018-10-27 00:45:11,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:45:11,196 INFO L225 Difference]: With dead ends: 1198 [2018-10-27 00:45:11,197 INFO L226 Difference]: Without dead ends: 822 [2018-10-27 00:45:11,203 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:45:11,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2018-10-27 00:45:11,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 810. [2018-10-27 00:45:11,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2018-10-27 00:45:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1267 transitions. [2018-10-27 00:45:11,260 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1267 transitions. Word has length 157 [2018-10-27 00:45:11,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:45:11,260 INFO L481 AbstractCegarLoop]: Abstraction has 810 states and 1267 transitions. [2018-10-27 00:45:11,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:45:11,264 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1267 transitions. [2018-10-27 00:45:11,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-27 00:45:11,269 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:45:11,270 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:45:11,270 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:45:11,271 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:45:11,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1241453342, now seen corresponding path program 1 times [2018-10-27 00:45:11,271 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:45:11,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:45:11,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:45:11,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:45:11,273 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:45:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:45:11,757 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-27 00:45:11,993 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-27 00:45:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:45:12,081 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:45:12,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 00:45:12,082 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:45:12,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 00:45:12,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 00:45:12,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:45:12,083 INFO L87 Difference]: Start difference. First operand 810 states and 1267 transitions. Second operand 5 states. [2018-10-27 00:45:14,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:45:14,128 INFO L93 Difference]: Finished difference Result 1759 states and 2791 transitions. [2018-10-27 00:45:14,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:45:14,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2018-10-27 00:45:14,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:45:14,146 INFO L225 Difference]: With dead ends: 1759 [2018-10-27 00:45:14,146 INFO L226 Difference]: Without dead ends: 807 [2018-10-27 00:45:14,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:45:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2018-10-27 00:45:14,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2018-10-27 00:45:14,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2018-10-27 00:45:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1249 transitions. [2018-10-27 00:45:14,187 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1249 transitions. Word has length 161 [2018-10-27 00:45:14,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:45:14,188 INFO L481 AbstractCegarLoop]: Abstraction has 807 states and 1249 transitions. [2018-10-27 00:45:14,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 00:45:14,188 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1249 transitions. [2018-10-27 00:45:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-27 00:45:14,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:45:14,192 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:45:14,193 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:45:14,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:45:14,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1229392870, now seen corresponding path program 1 times [2018-10-27 00:45:14,193 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:45:14,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:45:14,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:45:14,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:45:14,195 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:45:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:45:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:45:14,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:45:14,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 00:45:14,474 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:45:14,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 00:45:14,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 00:45:14,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:45:14,476 INFO L87 Difference]: Start difference. First operand 807 states and 1249 transitions. Second operand 5 states. [2018-10-27 00:45:15,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:45:15,455 INFO L93 Difference]: Finished difference Result 1749 states and 2745 transitions. [2018-10-27 00:45:15,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:45:15,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2018-10-27 00:45:15,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:45:15,461 INFO L225 Difference]: With dead ends: 1749 [2018-10-27 00:45:15,461 INFO L226 Difference]: Without dead ends: 800 [2018-10-27 00:45:15,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:45:15,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2018-10-27 00:45:15,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 800. [2018-10-27 00:45:15,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2018-10-27 00:45:15,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1221 transitions. [2018-10-27 00:45:15,490 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1221 transitions. Word has length 163 [2018-10-27 00:45:15,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:45:15,491 INFO L481 AbstractCegarLoop]: Abstraction has 800 states and 1221 transitions. [2018-10-27 00:45:15,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 00:45:15,491 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1221 transitions. [2018-10-27 00:45:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-27 00:45:15,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:45:15,496 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:45:15,496 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:45:15,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:45:15,496 INFO L82 PathProgramCache]: Analyzing trace with hash 397717782, now seen corresponding path program 1 times [2018-10-27 00:45:15,497 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:45:15,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:45:15,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:45:15,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:45:15,498 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:45:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:45:15,953 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:45:15,954 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:45:15,954 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:45:15,955 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 172 with the following transitions: [2018-10-27 00:45:15,959 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [45], [50], [52], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [667], [675], [683], [691], [699], [707], [715], [723], [731], [739], [747], [755], [759], [761], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-27 00:45:16,076 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:45:16,076 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:45:56,519 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:45:56,521 INFO L272 AbstractInterpreter]: Visited 140 different actions 274 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-10-27 00:45:56,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:45:56,534 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:46:03,929 INFO L227 lantSequenceWeakener]: Weakened 52 states. On average, predicates are now at 83.39% of their original sizes. [2018-10-27 00:46:03,929 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:49:14,045 INFO L415 sIntCurrentIteration]: We unified 170 AI predicates to 170 [2018-10-27 00:49:14,045 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:49:14,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:49:14,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-27 00:49:14,046 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:49:14,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-27 00:49:14,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-27 00:49:14,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2018-10-27 00:49:14,048 INFO L87 Difference]: Start difference. First operand 800 states and 1221 transitions. Second operand 19 states. Received shutdown request... [2018-10-27 00:49:19,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 00:49:19,204 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:49:19,209 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:49:19,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:49:19 BoogieIcfgContainer [2018-10-27 00:49:19,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:49:19,211 INFO L168 Benchmark]: Toolchain (without parser) took 261487.13 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 912.3 MB. Max. memory is 7.1 GB. [2018-10-27 00:49:19,212 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:49:19,213 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.00 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-27 00:49:19,213 INFO L168 Benchmark]: Boogie Procedure Inliner took 196.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -831.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-27 00:49:19,215 INFO L168 Benchmark]: Boogie Preprocessor took 65.82 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:49:19,215 INFO L168 Benchmark]: RCFGBuilder took 3576.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 116.9 MB). Peak memory consumption was 116.9 MB. Max. memory is 7.1 GB. [2018-10-27 00:49:19,216 INFO L168 Benchmark]: TraceAbstraction took 256875.31 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -461.0 MB). Peak memory consumption was 860.2 MB. Max. memory is 7.1 GB. [2018-10-27 00:49:19,221 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 767.00 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 196.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -831.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.82 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3576.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 116.9 MB). Peak memory consumption was 116.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 256875.31 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -461.0 MB). Peak memory consumption was 860.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 559]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 559). Cancelled while BasicCegarLoop was constructing difference of abstraction (800states) and FLOYD_HOARE automaton (currently 5 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 20 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 256.8s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 15.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 631 SDtfs, 2854 SDslu, 534 SDs, 0 SdLazy, 3893 SolverSat, 783 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 211 GetRequests, 125 SyntacticMatches, 49 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 190.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=810occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 40.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9947117396033809 AbsIntWeakeningRatio, 0.2 AbsIntAvgWeakeningVarsNumRemoved, 465.9117647058824 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 174 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 933 NumberOfCodeBlocks, 933 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 927 ConstructedInterpolants, 0 QuantifiedInterpolants, 1049283 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 107/109 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown