java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label50_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:41:13,571 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:41:13,573 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:41:13,589 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:41:13,589 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:41:13,591 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:41:13,592 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:41:13,594 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:41:13,595 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:41:13,596 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:41:13,597 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:41:13,597 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:41:13,598 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:41:13,599 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:41:13,600 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:41:13,601 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:41:13,602 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:41:13,604 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:41:13,606 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:41:13,607 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:41:13,608 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:41:13,610 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:41:13,612 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-14 17:41:13,621 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 17:41:13,649 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:41:13,649 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:41:13,650 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:41:13,650 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:41:13,651 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:41:13,651 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:41:13,651 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:41:13,651 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:41:13,651 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:41:13,652 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:41:13,652 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:41:13,653 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:41:13,653 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:41:13,654 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:41:13,654 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:41:13,654 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:41:13,654 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:41:13,654 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:41:13,654 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:41:13,655 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:41:13,655 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:41:13,655 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:41:13,655 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:41:13,657 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:41:13,658 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:41:13,658 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:41:13,658 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:41:13,658 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:41:13,658 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:41:13,658 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:41:13,659 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:41:13,659 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:41:13,659 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:41:13,729 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:41:13,745 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:41:13,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:41:13,754 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:41:13,754 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:41:13,755 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label50_true-unreach-call_false-termination.c [2018-09-14 17:41:14,097 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cc7adec0/cac9be6b5b734dc9a2415bd5ad4f7738/FLAG9005d751f [2018-09-14 17:41:14,407 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:41:14,408 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label50_true-unreach-call_false-termination.c [2018-09-14 17:41:14,432 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cc7adec0/cac9be6b5b734dc9a2415bd5ad4f7738/FLAG9005d751f [2018-09-14 17:41:14,449 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cc7adec0/cac9be6b5b734dc9a2415bd5ad4f7738 [2018-09-14 17:41:14,459 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:41:14,463 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:41:14,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:41:14,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:41:14,472 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:41:14,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:41:14" (1/1) ... [2018-09-14 17:41:14,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68983f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:41:14, skipping insertion in model container [2018-09-14 17:41:14,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:41:14" (1/1) ... [2018-09-14 17:41:14,488 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:41:15,097 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:41:15,119 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:41:15,342 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:41:15,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:41:15 WrapperNode [2018-09-14 17:41:15,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:41:15,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:41:15,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:41:15,404 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:41:15,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:41:15" (1/1) ... [2018-09-14 17:41:15,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:41:15" (1/1) ... [2018-09-14 17:41:15,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:41:15,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:41:15,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:41:15,520 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:41:15,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:41:15" (1/1) ... [2018-09-14 17:41:15,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:41:15" (1/1) ... [2018-09-14 17:41:15,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:41:15" (1/1) ... [2018-09-14 17:41:15,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:41:15" (1/1) ... [2018-09-14 17:41:15,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:41:15" (1/1) ... [2018-09-14 17:41:15,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:41:15" (1/1) ... [2018-09-14 17:41:15,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:41:15" (1/1) ... [2018-09-14 17:41:15,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:41:15,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:41:15,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:41:15,788 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:41:15,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:41:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:41:15,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:41:15,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:41:15,868 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:41:15,869 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:41:15,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:41:15,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:41:15,869 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:41:15,869 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:41:19,901 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:41:19,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:41:19 BoogieIcfgContainer [2018-09-14 17:41:19,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:41:19,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:41:19,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:41:19,907 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:41:19,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:41:14" (1/3) ... [2018-09-14 17:41:19,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f867d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:41:19, skipping insertion in model container [2018-09-14 17:41:19,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:41:15" (2/3) ... [2018-09-14 17:41:19,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f867d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:41:19, skipping insertion in model container [2018-09-14 17:41:19,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:41:19" (3/3) ... [2018-09-14 17:41:19,912 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label50_true-unreach-call_false-termination.c [2018-09-14 17:41:19,922 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:41:19,931 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:41:19,988 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:41:19,989 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:41:19,990 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:41:19,990 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:41:19,990 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:41:19,990 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:41:19,990 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:41:19,991 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:41:19,991 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:41:20,030 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-09-14 17:41:20,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-14 17:41:20,040 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:41:20,042 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:41:20,043 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:41:20,049 INFO L82 PathProgramCache]: Analyzing trace with hash -50157732, now seen corresponding path program 1 times [2018-09-14 17:41:20,054 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:41:20,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:41:20,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:20,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:41:20,100 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:41:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:20,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:41:20,505 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:41:20,505 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:41:20,505 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:41:20,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:41:20,530 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:41:20,531 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:41:20,535 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-09-14 17:41:22,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:41:22,208 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-09-14 17:41:22,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:41:22,211 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2018-09-14 17:41:22,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:41:22,233 INFO L225 Difference]: With dead ends: 691 [2018-09-14 17:41:22,234 INFO L226 Difference]: Without dead ends: 434 [2018-09-14 17:41:22,242 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:41:22,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-09-14 17:41:22,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-09-14 17:41:22,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-09-14 17:41:22,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-09-14 17:41:22,364 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 44 [2018-09-14 17:41:22,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:41:22,365 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-09-14 17:41:22,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:41:22,366 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-09-14 17:41:22,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-14 17:41:22,378 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:41:22,378 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:41:22,379 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:41:22,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1724157031, now seen corresponding path program 1 times [2018-09-14 17:41:22,379 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:41:22,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:41:22,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:22,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:41:22,382 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:41:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:41:22,769 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:41:22,769 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:41:22,769 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:41:22,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:41:22,771 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:41:22,772 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:41:22,772 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-09-14 17:41:24,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:41:24,894 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-09-14 17:41:24,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:41:24,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-09-14 17:41:24,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:41:24,902 INFO L225 Difference]: With dead ends: 1062 [2018-09-14 17:41:24,903 INFO L226 Difference]: Without dead ends: 634 [2018-09-14 17:41:24,906 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:41:24,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-09-14 17:41:24,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-09-14 17:41:24,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-09-14 17:41:24,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-09-14 17:41:24,947 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 131 [2018-09-14 17:41:24,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:41:24,948 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-09-14 17:41:24,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:41:24,948 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-09-14 17:41:24,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-14 17:41:24,953 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:41:24,953 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:41:24,953 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:41:24,954 INFO L82 PathProgramCache]: Analyzing trace with hash 415093804, now seen corresponding path program 1 times [2018-09-14 17:41:24,954 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:41:24,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:41:24,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:24,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:41:24,955 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:41:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:41:25,149 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:41:25,149 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:41:25,150 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:41:25,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:41:25,151 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:41:25,151 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:41:25,151 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-09-14 17:41:29,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:41:29,103 INFO L93 Difference]: Finished difference Result 2352 states and 4010 transitions. [2018-09-14 17:41:29,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:41:29,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2018-09-14 17:41:29,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:41:29,123 INFO L225 Difference]: With dead ends: 2352 [2018-09-14 17:41:29,123 INFO L226 Difference]: Without dead ends: 1733 [2018-09-14 17:41:29,129 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:41:29,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2018-09-14 17:41:29,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2018-09-14 17:41:29,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-09-14 17:41:29,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2668 transitions. [2018-09-14 17:41:29,212 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2668 transitions. Word has length 140 [2018-09-14 17:41:29,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:41:29,212 INFO L480 AbstractCegarLoop]: Abstraction has 1733 states and 2668 transitions. [2018-09-14 17:41:29,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:41:29,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2668 transitions. [2018-09-14 17:41:29,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-09-14 17:41:29,229 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:41:29,229 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:41:29,230 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:41:29,230 INFO L82 PathProgramCache]: Analyzing trace with hash -872463117, now seen corresponding path program 1 times [2018-09-14 17:41:29,230 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:41:29,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:41:29,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:29,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:41:29,232 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:41:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:30,450 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 147 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:41:30,450 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:41:30,450 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:41:30,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:30,459 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:41:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:30,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:41:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-14 17:41:31,242 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:41:31,456 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2018-09-14 17:41:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 74 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:41:32,384 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:41:32,384 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 5] total 17 [2018-09-14 17:41:32,384 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:41:32,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:41:32,385 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:41:32,386 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2018-09-14 17:41:32,388 INFO L87 Difference]: Start difference. First operand 1733 states and 2668 transitions. Second operand 5 states. [2018-09-14 17:41:39,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:41:39,072 INFO L93 Difference]: Finished difference Result 4837 states and 7428 transitions. [2018-09-14 17:41:39,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:41:39,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 277 [2018-09-14 17:41:39,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:41:39,097 INFO L225 Difference]: With dead ends: 4837 [2018-09-14 17:41:39,097 INFO L226 Difference]: Without dead ends: 3110 [2018-09-14 17:41:39,110 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 550 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2018-09-14 17:41:39,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2018-09-14 17:41:39,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 3057. [2018-09-14 17:41:39,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3057 states. [2018-09-14 17:41:39,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3057 states to 3057 states and 4474 transitions. [2018-09-14 17:41:39,206 INFO L78 Accepts]: Start accepts. Automaton has 3057 states and 4474 transitions. Word has length 277 [2018-09-14 17:41:39,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:41:39,207 INFO L480 AbstractCegarLoop]: Abstraction has 3057 states and 4474 transitions. [2018-09-14 17:41:39,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:41:39,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3057 states and 4474 transitions. [2018-09-14 17:41:39,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-09-14 17:41:39,226 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:41:39,227 INFO L376 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:41:39,227 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:41:39,227 INFO L82 PathProgramCache]: Analyzing trace with hash 594401252, now seen corresponding path program 1 times [2018-09-14 17:41:39,228 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:41:39,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:41:39,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:39,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:41:39,229 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:41:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:39,778 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 17:41:39,989 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 17:41:40,226 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 17:41:40,720 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-14 17:41:41,327 WARN L178 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-09-14 17:41:42,067 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 199 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:41:42,068 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:41:42,068 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:41:42,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:42,114 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:41:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:42,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:41:42,532 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 17:41:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 303 proven. 53 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-14 17:41:42,780 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:41:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 121 proven. 268 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:41:43,455 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:41:43,455 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:41:43,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:43,472 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:41:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:43,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:41:44,140 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 303 proven. 53 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-14 17:41:44,141 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:41:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 121 proven. 268 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:41:44,853 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:41:44,853 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8, 8, 8] total 26 [2018-09-14 17:41:44,853 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:41:44,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-14 17:41:44,855 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-14 17:41:44,856 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2018-09-14 17:41:44,856 INFO L87 Difference]: Start difference. First operand 3057 states and 4474 transitions. Second operand 15 states. [2018-09-14 17:41:49,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:41:49,459 INFO L93 Difference]: Finished difference Result 7263 states and 10608 transitions. [2018-09-14 17:41:49,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-14 17:41:49,460 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 362 [2018-09-14 17:41:49,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:41:49,481 INFO L225 Difference]: With dead ends: 7263 [2018-09-14 17:41:49,481 INFO L226 Difference]: Without dead ends: 4196 [2018-09-14 17:41:49,497 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1491 GetRequests, 1447 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2018-09-14 17:41:49,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2018-09-14 17:41:49,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 3781. [2018-09-14 17:41:49,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3781 states. [2018-09-14 17:41:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 4902 transitions. [2018-09-14 17:41:49,611 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 4902 transitions. Word has length 362 [2018-09-14 17:41:49,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:41:49,612 INFO L480 AbstractCegarLoop]: Abstraction has 3781 states and 4902 transitions. [2018-09-14 17:41:49,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-14 17:41:49,612 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 4902 transitions. [2018-09-14 17:41:49,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-09-14 17:41:49,634 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:41:49,634 INFO L376 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:41:49,635 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:41:49,635 INFO L82 PathProgramCache]: Analyzing trace with hash 852160799, now seen corresponding path program 1 times [2018-09-14 17:41:49,635 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:41:49,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:41:49,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:49,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:41:49,637 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:41:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:50,068 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-09-14 17:41:50,272 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 21 [2018-09-14 17:41:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 297 proven. 40 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-09-14 17:41:50,978 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:41:50,978 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:41:50,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:50,986 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:41:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:51,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:41:51,372 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-09-14 17:41:51,373 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:41:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 111 proven. 210 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-09-14 17:41:51,745 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:41:51,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 5] total 16 [2018-09-14 17:41:51,746 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:41:51,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:41:51,747 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:41:51,747 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2018-09-14 17:41:51,747 INFO L87 Difference]: Start difference. First operand 3781 states and 4902 transitions. Second operand 5 states. [2018-09-14 17:41:54,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:41:54,028 INFO L93 Difference]: Finished difference Result 8377 states and 10824 transitions. [2018-09-14 17:41:54,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:41:54,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 387 [2018-09-14 17:41:54,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:41:54,059 INFO L225 Difference]: With dead ends: 8377 [2018-09-14 17:41:54,059 INFO L226 Difference]: Without dead ends: 4789 [2018-09-14 17:41:54,074 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 769 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2018-09-14 17:41:54,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4789 states. [2018-09-14 17:41:54,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4789 to 4461. [2018-09-14 17:41:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4461 states. [2018-09-14 17:41:54,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4461 states to 4461 states and 5500 transitions. [2018-09-14 17:41:54,181 INFO L78 Accepts]: Start accepts. Automaton has 4461 states and 5500 transitions. Word has length 387 [2018-09-14 17:41:54,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:41:54,182 INFO L480 AbstractCegarLoop]: Abstraction has 4461 states and 5500 transitions. [2018-09-14 17:41:54,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:41:54,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4461 states and 5500 transitions. [2018-09-14 17:41:54,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-09-14 17:41:54,208 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:41:54,209 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:41:54,209 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:41:54,209 INFO L82 PathProgramCache]: Analyzing trace with hash -734705564, now seen corresponding path program 1 times [2018-09-14 17:41:54,209 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:41:54,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:41:54,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:54,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:41:54,211 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:41:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:54,958 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 380 proven. 112 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-09-14 17:41:54,958 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:41:54,958 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:41:54,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:54,968 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:41:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:55,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:41:55,432 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 666 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-09-14 17:41:55,432 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:41:55,756 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-14 17:41:56,011 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-14 17:41:56,304 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2018-09-14 17:41:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 380 proven. 112 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-09-14 17:41:56,827 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:41:56,827 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:41:56,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:56,848 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:41:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:57,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:41:57,251 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 662 proven. 6 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-09-14 17:41:57,252 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:41:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 380 proven. 112 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-09-14 17:41:57,660 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:41:57,661 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 8 [2018-09-14 17:41:57,661 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:41:57,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 17:41:57,662 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 17:41:57,662 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:41:57,663 INFO L87 Difference]: Start difference. First operand 4461 states and 5500 transitions. Second operand 7 states. [2018-09-14 17:42:00,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:42:00,120 INFO L93 Difference]: Finished difference Result 10313 states and 13068 transitions. [2018-09-14 17:42:00,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 17:42:00,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 498 [2018-09-14 17:42:00,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:42:00,143 INFO L225 Difference]: With dead ends: 10313 [2018-09-14 17:42:00,144 INFO L226 Difference]: Without dead ends: 6045 [2018-09-14 17:42:00,164 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2011 GetRequests, 1989 SyntacticMatches, 11 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:42:00,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6045 states. [2018-09-14 17:42:00,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6045 to 5780. [2018-09-14 17:42:00,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5780 states. [2018-09-14 17:42:00,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5780 states to 5780 states and 6951 transitions. [2018-09-14 17:42:00,276 INFO L78 Accepts]: Start accepts. Automaton has 5780 states and 6951 transitions. Word has length 498 [2018-09-14 17:42:00,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:42:00,277 INFO L480 AbstractCegarLoop]: Abstraction has 5780 states and 6951 transitions. [2018-09-14 17:42:00,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 17:42:00,277 INFO L276 IsEmpty]: Start isEmpty. Operand 5780 states and 6951 transitions. [2018-09-14 17:42:00,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2018-09-14 17:42:00,297 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:42:00,298 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:42:00,298 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:42:00,298 INFO L82 PathProgramCache]: Analyzing trace with hash -923919085, now seen corresponding path program 1 times [2018-09-14 17:42:00,298 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:42:00,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:00,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:00,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:00,300 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:42:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:00,873 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 17:42:01,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 516 proven. 482 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-09-14 17:42:01,754 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:42:01,754 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:42:01,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:01,762 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:42:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:01,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:42:02,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 876 proven. 2 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-09-14 17:42:02,422 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:42:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 510 proven. 112 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2018-09-14 17:42:03,221 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:42:03,222 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:42:03,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:03,238 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:42:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:03,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:42:04,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 668 proven. 210 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-09-14 17:42:04,005 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:42:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 221 proven. 690 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-14 17:42:04,930 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:42:04,930 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 8, 8] total 16 [2018-09-14 17:42:04,930 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:42:04,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 17:42:04,931 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 17:42:04,932 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2018-09-14 17:42:04,932 INFO L87 Difference]: Start difference. First operand 5780 states and 6951 transitions. Second operand 13 states. [2018-09-14 17:42:08,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:42:08,286 INFO L93 Difference]: Finished difference Result 11679 states and 14483 transitions. [2018-09-14 17:42:08,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-14 17:42:08,292 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 583 [2018-09-14 17:42:08,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:42:08,320 INFO L225 Difference]: With dead ends: 11679 [2018-09-14 17:42:08,320 INFO L226 Difference]: Without dead ends: 6151 [2018-09-14 17:42:08,339 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2360 GetRequests, 2322 SyntacticMatches, 15 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2018-09-14 17:42:08,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6151 states. [2018-09-14 17:42:08,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6151 to 5973. [2018-09-14 17:42:08,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5973 states. [2018-09-14 17:42:08,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5973 states to 5973 states and 7002 transitions. [2018-09-14 17:42:08,472 INFO L78 Accepts]: Start accepts. Automaton has 5973 states and 7002 transitions. Word has length 583 [2018-09-14 17:42:08,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:42:08,473 INFO L480 AbstractCegarLoop]: Abstraction has 5973 states and 7002 transitions. [2018-09-14 17:42:08,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-14 17:42:08,473 INFO L276 IsEmpty]: Start isEmpty. Operand 5973 states and 7002 transitions. [2018-09-14 17:42:08,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2018-09-14 17:42:08,492 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:42:08,493 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:42:08,493 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:42:08,494 INFO L82 PathProgramCache]: Analyzing trace with hash 859413863, now seen corresponding path program 2 times [2018-09-14 17:42:08,494 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:42:08,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:08,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:08,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:08,495 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:42:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 542 proven. 534 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2018-09-14 17:42:09,975 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:42:09,975 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:42:09,985 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 17:42:09,985 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 17:42:10,144 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 17:42:10,144 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 17:42:10,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:42:10,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 928 proven. 2 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-09-14 17:42:10,484 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:42:10,703 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-09-14 17:42:11,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 536 proven. 112 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-09-14 17:42:11,702 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:42:11,703 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:42:11,719 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 17:42:11,719 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 17:42:12,066 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 17:42:12,066 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 17:42:12,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:42:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 913 proven. 17 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-09-14 17:42:12,928 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:42:13,308 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-09-14 17:42:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 215 proven. 748 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-09-14 17:42:15,312 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:42:15,313 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5, 10, 11] total 31 [2018-09-14 17:42:15,313 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:42:15,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-14 17:42:15,314 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-14 17:42:15,315 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2018-09-14 17:42:15,315 INFO L87 Difference]: Start difference. First operand 5973 states and 7002 transitions. Second operand 18 states. [2018-09-14 17:42:17,963 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2018-09-14 17:42:18,856 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2018-09-14 17:42:20,499 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2018-09-14 17:42:21,075 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-09-14 17:42:21,331 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-09-14 17:42:22,989 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2018-09-14 17:42:23,659 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2018-09-14 17:42:24,049 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2018-09-14 17:42:24,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:42:24,516 INFO L93 Difference]: Finished difference Result 15243 states and 18456 transitions. [2018-09-14 17:42:24,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-14 17:42:24,517 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 609 [2018-09-14 17:42:24,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:42:24,545 INFO L225 Difference]: With dead ends: 15243 [2018-09-14 17:42:24,545 INFO L226 Difference]: Without dead ends: 9276 [2018-09-14 17:42:24,566 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2513 GetRequests, 2434 SyntacticMatches, 14 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1187 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=813, Invalid=3609, Unknown=0, NotChecked=0, Total=4422 [2018-09-14 17:42:24,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9276 states. [2018-09-14 17:42:24,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9276 to 8444. [2018-09-14 17:42:24,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8444 states. [2018-09-14 17:42:24,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8444 states to 8444 states and 9597 transitions. [2018-09-14 17:42:24,737 INFO L78 Accepts]: Start accepts. Automaton has 8444 states and 9597 transitions. Word has length 609 [2018-09-14 17:42:24,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:42:24,738 INFO L480 AbstractCegarLoop]: Abstraction has 8444 states and 9597 transitions. [2018-09-14 17:42:24,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-14 17:42:24,738 INFO L276 IsEmpty]: Start isEmpty. Operand 8444 states and 9597 transitions. [2018-09-14 17:42:24,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2018-09-14 17:42:24,760 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:42:24,761 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 17:42:24,761 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:42:24,762 INFO L82 PathProgramCache]: Analyzing trace with hash -89647657, now seen corresponding path program 1 times [2018-09-14 17:42:24,762 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:42:24,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:24,763 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 17:42:24,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:24,763 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:42:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 543 proven. 119 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-09-14 17:42:25,726 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:42:25,726 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:42:25,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:25,733 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:42:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:25,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:42:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 949 proven. 2 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-09-14 17:42:26,263 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:42:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 543 proven. 119 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-09-14 17:42:26,652 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:42:26,652 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:42:26,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:26,669 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:42:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:27,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:42:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 949 proven. 2 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-09-14 17:42:27,320 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:42:27,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 543 proven. 119 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-09-14 17:42:27,806 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:42:27,806 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-09-14 17:42:27,807 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:42:27,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 17:42:27,808 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 17:42:27,809 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:42:27,809 INFO L87 Difference]: Start difference. First operand 8444 states and 9597 transitions. Second operand 7 states. [2018-09-14 17:42:31,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:42:31,101 INFO L93 Difference]: Finished difference Result 23247 states and 30098 transitions. [2018-09-14 17:42:31,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-14 17:42:31,101 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 683 [2018-09-14 17:42:31,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:42:31,185 INFO L225 Difference]: With dead ends: 23247 [2018-09-14 17:42:31,185 INFO L226 Difference]: Without dead ends: 14994 [2018-09-14 17:42:31,242 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2748 GetRequests, 2733 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-09-14 17:42:31,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14994 states. [2018-09-14 17:42:31,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14994 to 14675. [2018-09-14 17:42:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14675 states. [2018-09-14 17:42:31,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14675 states to 14675 states and 16966 transitions. [2018-09-14 17:42:31,589 INFO L78 Accepts]: Start accepts. Automaton has 14675 states and 16966 transitions. Word has length 683 [2018-09-14 17:42:31,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:42:31,590 INFO L480 AbstractCegarLoop]: Abstraction has 14675 states and 16966 transitions. [2018-09-14 17:42:31,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 17:42:31,590 INFO L276 IsEmpty]: Start isEmpty. Operand 14675 states and 16966 transitions. [2018-09-14 17:42:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2018-09-14 17:42:31,624 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:42:31,624 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:42:31,624 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:42:31,625 INFO L82 PathProgramCache]: Analyzing trace with hash -700324936, now seen corresponding path program 1 times [2018-09-14 17:42:31,625 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:42:31,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:31,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:31,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:31,626 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:42:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:32,867 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-14 17:42:33,379 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-09-14 17:42:34,198 WARN L178 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-09-14 17:42:35,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2230 backedges. 796 proven. 835 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2018-09-14 17:42:35,192 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:42:35,192 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:42:35,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:35,200 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:42:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:35,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:42:35,840 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 17:42:36,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2230 backedges. 1329 proven. 2 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2018-09-14 17:42:36,150 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:42:36,313 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2018-09-14 17:42:37,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2230 backedges. 784 proven. 112 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2018-09-14 17:42:37,313 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:42:37,313 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:42:37,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:37,329 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:42:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:37,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:42:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2230 backedges. 1321 proven. 10 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2018-09-14 17:42:38,384 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:42:39,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2230 backedges. 289 proven. 1075 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2018-09-14 17:42:39,835 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:42:39,836 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 8, 8] total 28 [2018-09-14 17:42:39,836 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:42:39,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-14 17:42:39,838 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-14 17:42:39,838 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2018-09-14 17:42:39,838 INFO L87 Difference]: Start difference. First operand 14675 states and 16966 transitions. Second operand 17 states. [2018-09-14 17:42:47,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:42:47,769 INFO L93 Difference]: Finished difference Result 29008 states and 35604 transitions. [2018-09-14 17:42:47,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-14 17:42:47,769 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 772 [2018-09-14 17:42:47,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:42:47,834 INFO L225 Difference]: With dead ends: 29008 [2018-09-14 17:42:47,834 INFO L226 Difference]: Without dead ends: 13740 [2018-09-14 17:42:47,895 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3171 GetRequests, 3093 SyntacticMatches, 8 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1093, Invalid=4019, Unknown=0, NotChecked=0, Total=5112 [2018-09-14 17:42:47,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13740 states. [2018-09-14 17:42:48,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13740 to 13292. [2018-09-14 17:42:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13292 states. [2018-09-14 17:42:48,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13292 states to 13292 states and 14978 transitions. [2018-09-14 17:42:48,165 INFO L78 Accepts]: Start accepts. Automaton has 13292 states and 14978 transitions. Word has length 772 [2018-09-14 17:42:48,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:42:48,166 INFO L480 AbstractCegarLoop]: Abstraction has 13292 states and 14978 transitions. [2018-09-14 17:42:48,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-14 17:42:48,167 INFO L276 IsEmpty]: Start isEmpty. Operand 13292 states and 14978 transitions. [2018-09-14 17:42:48,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2018-09-14 17:42:48,184 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:42:48,185 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:42:48,185 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:42:48,186 INFO L82 PathProgramCache]: Analyzing trace with hash -664045017, now seen corresponding path program 1 times [2018-09-14 17:42:48,186 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:42:48,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:48,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:48,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:48,187 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:42:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:51,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 791 proven. 845 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2018-09-14 17:42:51,239 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:42:51,239 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:42:51,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:51,248 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:42:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:51,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:42:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 1269 proven. 2 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2018-09-14 17:42:51,834 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:42:52,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 748 proven. 119 refuted. 0 times theorem prover too weak. 1103 trivial. 0 not checked. [2018-09-14 17:42:52,367 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:42:52,367 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:42:52,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:52,384 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:42:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:52,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:42:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 1269 proven. 2 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2018-09-14 17:42:53,228 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:42:53,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 748 proven. 119 refuted. 0 times theorem prover too weak. 1103 trivial. 0 not checked. [2018-09-14 17:42:53,660 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:42:53,661 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5, 5, 5] total 22 [2018-09-14 17:42:53,661 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:42:53,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-14 17:42:53,662 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-14 17:42:53,662 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2018-09-14 17:42:53,663 INFO L87 Difference]: Start difference. First operand 13292 states and 14978 transitions. Second operand 20 states. [2018-09-14 17:43:07,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:43:07,896 INFO L93 Difference]: Finished difference Result 30179 states and 34655 transitions. [2018-09-14 17:43:07,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-14 17:43:07,896 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 843 [2018-09-14 17:43:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:43:07,946 INFO L225 Difference]: With dead ends: 30179 [2018-09-14 17:43:07,947 INFO L226 Difference]: Without dead ends: 16752 [2018-09-14 17:43:07,984 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3536 GetRequests, 3432 SyntacticMatches, 6 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3298 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1374, Invalid=8526, Unknown=0, NotChecked=0, Total=9900 [2018-09-14 17:43:07,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16752 states. [2018-09-14 17:43:08,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16752 to 16098. [2018-09-14 17:43:08,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16098 states. [2018-09-14 17:43:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16098 states to 16098 states and 17825 transitions. [2018-09-14 17:43:08,271 INFO L78 Accepts]: Start accepts. Automaton has 16098 states and 17825 transitions. Word has length 843 [2018-09-14 17:43:08,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:43:08,272 INFO L480 AbstractCegarLoop]: Abstraction has 16098 states and 17825 transitions. [2018-09-14 17:43:08,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-14 17:43:08,272 INFO L276 IsEmpty]: Start isEmpty. Operand 16098 states and 17825 transitions. [2018-09-14 17:43:08,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2018-09-14 17:43:08,301 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:43:08,302 INFO L376 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:43:08,303 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:43:08,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1821769112, now seen corresponding path program 1 times [2018-09-14 17:43:08,303 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:43:08,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:43:08,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:43:08,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:43:08,304 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:43:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:43:12,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3767 backedges. 1173 proven. 2247 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2018-09-14 17:43:12,952 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:43:12,952 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:43:12,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:43:12,961 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:43:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:43:13,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:43:13,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3767 backedges. 1170 proven. 2 refuted. 0 times theorem prover too weak. 2595 trivial. 0 not checked. [2018-09-14 17:43:13,931 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:43:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3767 backedges. 1170 proven. 2 refuted. 0 times theorem prover too weak. 2595 trivial. 0 not checked. [2018-09-14 17:43:15,551 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:43:15,551 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:43:15,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:43:15,569 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:43:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:43:16,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:43:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3767 backedges. 2282 proven. 6 refuted. 0 times theorem prover too weak. 1479 trivial. 0 not checked. [2018-09-14 17:43:17,318 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:43:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3767 backedges. 1537 proven. 271 refuted. 0 times theorem prover too weak. 1959 trivial. 0 not checked. [2018-09-14 17:43:18,487 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:43:18,488 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 5, 5, 7, 8] total 44 [2018-09-14 17:43:18,489 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:43:18,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-14 17:43:18,491 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-14 17:43:18,491 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1700, Unknown=0, NotChecked=0, Total=1892 [2018-09-14 17:43:18,492 INFO L87 Difference]: Start difference. First operand 16098 states and 17825 transitions. Second operand 31 states. [2018-09-14 17:43:21,319 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 30 [2018-09-14 17:43:22,120 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 35 [2018-09-14 17:43:22,458 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 25 [2018-09-14 17:43:22,739 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 36 [2018-09-14 17:43:27,518 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2018-09-14 17:43:28,487 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2018-09-14 17:43:28,791 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2018-09-14 17:43:29,568 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2018-09-14 17:43:30,031 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2018-09-14 17:43:31,365 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2018-09-14 17:43:33,244 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2018-09-14 17:43:34,642 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2018-09-14 17:43:36,043 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2018-09-14 17:43:36,655 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2018-09-14 17:43:37,449 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2018-09-14 17:43:37,901 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 30 [2018-09-14 17:43:38,585 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2018-09-14 17:43:39,599 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2018-09-14 17:43:39,871 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2018-09-14 17:43:40,248 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2018-09-14 17:43:40,944 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2018-09-14 17:43:41,469 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2018-09-14 17:43:41,976 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2018-09-14 17:43:42,664 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2018-09-14 17:43:45,667 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 31 [2018-09-14 17:43:45,857 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2018-09-14 17:43:46,151 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2018-09-14 17:43:46,671 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2018-09-14 17:43:47,494 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2018-09-14 17:43:48,281 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2018-09-14 17:43:49,154 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2018-09-14 17:43:49,444 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2018-09-14 17:43:50,680 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2018-09-14 17:43:52,910 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2018-09-14 17:43:53,797 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2018-09-14 17:43:53,989 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2018-09-14 17:43:55,698 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2018-09-14 17:43:56,172 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2018-09-14 17:43:57,989 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2018-09-14 17:43:58,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:43:58,946 INFO L93 Difference]: Finished difference Result 38005 states and 47630 transitions. [2018-09-14 17:43:58,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-09-14 17:43:58,947 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 1100 [2018-09-14 17:43:58,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:43:59,075 INFO L225 Difference]: With dead ends: 38005 [2018-09-14 17:43:59,075 INFO L226 Difference]: Without dead ends: 20433 [2018-09-14 17:43:59,185 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4628 GetRequests, 4444 SyntacticMatches, 6 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11223 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=4173, Invalid=28047, Unknown=0, NotChecked=0, Total=32220 [2018-09-14 17:43:59,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20433 states. [2018-09-14 17:43:59,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20433 to 17721. [2018-09-14 17:43:59,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17721 states. [2018-09-14 17:43:59,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17721 states to 17721 states and 20350 transitions. [2018-09-14 17:43:59,720 INFO L78 Accepts]: Start accepts. Automaton has 17721 states and 20350 transitions. Word has length 1100 [2018-09-14 17:43:59,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:43:59,721 INFO L480 AbstractCegarLoop]: Abstraction has 17721 states and 20350 transitions. [2018-09-14 17:43:59,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-14 17:43:59,722 INFO L276 IsEmpty]: Start isEmpty. Operand 17721 states and 20350 transitions. [2018-09-14 17:43:59,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1149 [2018-09-14 17:43:59,744 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:43:59,745 INFO L376 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:43:59,745 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:43:59,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1961239800, now seen corresponding path program 1 times [2018-09-14 17:43:59,745 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:43:59,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:43:59,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:43:59,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:43:59,746 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:43:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:44:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 1686 proven. 355 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2018-09-14 17:44:01,077 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:44:01,077 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:44:01,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:44:01,085 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:44:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:44:01,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:44:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 2471 proven. 6 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2018-09-14 17:44:02,022 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:44:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 1686 proven. 359 refuted. 0 times theorem prover too weak. 1959 trivial. 0 not checked. [2018-09-14 17:44:02,984 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:44:02,984 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:44:02,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:44:03,000 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:44:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:44:03,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:44:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 2471 proven. 6 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2018-09-14 17:44:04,295 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:44:05,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 1686 proven. 359 refuted. 0 times theorem prover too weak. 1959 trivial. 0 not checked. [2018-09-14 17:44:05,240 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:44:05,241 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8] total 14 [2018-09-14 17:44:05,241 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:44:05,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:44:05,243 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:44:05,243 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:44:05,243 INFO L87 Difference]: Start difference. First operand 17721 states and 20350 transitions. Second operand 9 states. [2018-09-14 17:44:09,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:44:09,069 INFO L93 Difference]: Finished difference Result 39998 states and 46409 transitions. [2018-09-14 17:44:09,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-14 17:44:09,070 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1148 [2018-09-14 17:44:09,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:44:09,166 INFO L225 Difference]: With dead ends: 39998 [2018-09-14 17:44:09,166 INFO L226 Difference]: Without dead ends: 22468 [2018-09-14 17:44:09,256 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4621 GetRequests, 4594 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2018-09-14 17:44:09,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22468 states. [2018-09-14 17:44:09,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22468 to 21881. [2018-09-14 17:44:09,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21881 states. [2018-09-14 17:44:09,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21881 states to 21881 states and 24742 transitions. [2018-09-14 17:44:09,811 INFO L78 Accepts]: Start accepts. Automaton has 21881 states and 24742 transitions. Word has length 1148 [2018-09-14 17:44:09,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:44:09,813 INFO L480 AbstractCegarLoop]: Abstraction has 21881 states and 24742 transitions. [2018-09-14 17:44:09,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:44:09,813 INFO L276 IsEmpty]: Start isEmpty. Operand 21881 states and 24742 transitions. [2018-09-14 17:44:09,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1706 [2018-09-14 17:44:09,858 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:44:09,859 INFO L376 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-09-14 17:44:09,859 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:44:09,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1662833811, now seen corresponding path program 1 times [2018-09-14 17:44:09,860 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:44:09,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:44:09,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:44:09,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:44:09,861 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:44:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:44:11,996 WARN L178 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-09-14 17:44:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8929 backedges. 1944 proven. 5334 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2018-09-14 17:44:17,237 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:44:17,237 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:44:17,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:44:17,244 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:44:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:44:17,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:44:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8929 backedges. 2885 proven. 87 refuted. 0 times theorem prover too weak. 5957 trivial. 0 not checked. [2018-09-14 17:44:19,247 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:44:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8929 backedges. 2963 proven. 122 refuted. 0 times theorem prover too weak. 5844 trivial. 0 not checked. [2018-09-14 17:44:22,789 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:44:22,789 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 23 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:44:22,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:44:22,804 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:44:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:44:23,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:44:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 8929 backedges. 2885 proven. 87 refuted. 0 times theorem prover too weak. 5957 trivial. 0 not checked. [2018-09-14 17:44:25,049 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:44:27,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8929 backedges. 2963 proven. 122 refuted. 0 times theorem prover too weak. 5844 trivial. 0 not checked. [2018-09-14 17:44:27,753 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:44:27,754 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 8, 9, 8, 9] total 39 [2018-09-14 17:44:27,755 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:44:27,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-14 17:44:27,756 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-14 17:44:27,757 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1312, Unknown=0, NotChecked=0, Total=1482 [2018-09-14 17:44:27,757 INFO L87 Difference]: Start difference. First operand 21881 states and 24742 transitions. Second operand 33 states. [2018-09-14 17:44:28,926 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2018-09-14 17:44:31,232 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2018-09-14 17:44:33,237 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2018-09-14 17:44:33,887 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2018-09-14 17:44:34,100 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2018-09-14 17:44:43,180 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2018-09-14 17:44:44,099 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2018-09-14 17:44:46,865 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2018-09-14 17:44:49,476 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 33 [2018-09-14 17:44:53,736 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2018-09-14 17:44:56,589 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2018-09-14 17:44:58,905 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-09-14 17:45:03,347 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2018-09-14 17:45:03,748 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2018-09-14 17:45:04,620 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 31 [2018-09-14 17:45:05,065 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2018-09-14 17:45:05,667 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-09-14 17:45:06,019 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 Received shutdown request... [2018-09-14 17:45:08,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-09-14 17:45:08,763 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:45:08,770 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:45:08,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:45:08 BoogieIcfgContainer [2018-09-14 17:45:08,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:45:08,771 INFO L168 Benchmark]: Toolchain (without parser) took 234311.06 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 2.4 GB in the end (delta: -975.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-09-14 17:45:08,772 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-09-14 17:45:08,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 938.60 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. [2018-09-14 17:45:08,773 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.51 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-14 17:45:08,774 INFO L168 Benchmark]: Boogie Preprocessor took 267.23 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -882.7 MB). Peak memory consumption was 33.0 MB. Max. memory is 7.1 GB. [2018-09-14 17:45:08,774 INFO L168 Benchmark]: RCFGBuilder took 4115.31 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: 119.9 MB). Peak memory consumption was 119.9 MB. Max. memory is 7.1 GB. [2018-09-14 17:45:08,775 INFO L168 Benchmark]: TraceAbstraction took 228866.15 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -276.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-09-14 17:45:08,778 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 938.60 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 116.51 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 267.23 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -882.7 MB). Peak memory consumption was 33.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4115.31 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: 119.9 MB). Peak memory consumption was 119.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228866.15 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -276.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 115). Cancelled while BasicCegarLoop was constructing difference of abstraction (21881states) and FLOYD_HOARE automaton (currently 136 states, 33 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 173 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 228.7s OverallTime, 15 OverallIterations, 14 TraceHistogramMax, 148.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1884 SDtfs, 62355 SDslu, 6445 SDs, 0 SdLazy, 88159 SolverSat, 10036 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 87.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35529 GetRequests, 34701 SyntacticMatches, 90 SemanticMatches, 737 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28225 ImplicationChecksByTransitivity, 56.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21881occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 14 MinimizatonAttempts, 6800 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 6.8s SatisfiabilityAnalysisTime, 54.6s InterpolantComputationTime, 26552 NumberOfCodeBlocks, 26552 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 43763 ConstructedInterpolants, 12 QuantifiedInterpolants, 174770467 SizeOfPredicates, 71 NumberOfNonLiveVariables, 24814 ConjunctsInSsa, 362 ConjunctsInUnsatCore, 59 InterpolantComputations, 5 PerfectInterpolantSequences, 114157/131487 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label50_true-unreach-call_false-termination.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-45-08-790.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label50_true-unreach-call_false-termination.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-45-08-790.csv Completed graceful shutdown