java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label39_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:00:46,697 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:00:46,699 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:00:46,715 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:00:46,715 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:00:46,716 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:00:46,720 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:00:46,722 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:00:46,726 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:00:46,727 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:00:46,728 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:00:46,729 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:00:46,730 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:00:46,731 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:00:46,732 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:00:46,732 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:00:46,733 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:00:46,735 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:00:46,738 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:00:46,739 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:00:46,740 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:00:46,742 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:00:46,744 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:00:46,744 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:00:46,745 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:00:46,745 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:00:46,746 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:00:46,747 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:00:46,748 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:00:46,749 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:00:46,749 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:00:46,750 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:00:46,754 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 18:00:46,781 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:00:46,781 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:00:46,782 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:00:46,783 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:00:46,783 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:00:46,784 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:00:46,784 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:00:46,784 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:00:46,784 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:00:46,784 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:00:46,785 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:00:46,785 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:00:46,785 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:00:46,785 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:00:46,785 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:00:46,786 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:00:46,787 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:00:46,787 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:00:46,787 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:00:46,787 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:00:46,788 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:00:46,788 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:00:46,788 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:00:46,788 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:00:46,788 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:00:46,789 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:00:46,789 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:00:46,789 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:00:46,840 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:00:46,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:00:46,857 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:00:46,858 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:00:46,859 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:00:46,860 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label39_false-unreach-call.c [2018-10-23 18:00:46,917 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dc650e187/af346fcc22da47eb9c99773d43526666/FLAG2ca9b9371 [2018-10-23 18:00:47,648 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:00:47,649 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label39_false-unreach-call.c [2018-10-23 18:00:47,684 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dc650e187/af346fcc22da47eb9c99773d43526666/FLAG2ca9b9371 [2018-10-23 18:00:47,705 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dc650e187/af346fcc22da47eb9c99773d43526666 [2018-10-23 18:00:47,718 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:00:47,720 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:00:47,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:00:47,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:00:47,728 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:00:47,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:00:47" (1/1) ... [2018-10-23 18:00:47,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@331e493b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:00:47, skipping insertion in model container [2018-10-23 18:00:47,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:00:47" (1/1) ... [2018-10-23 18:00:47,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:00:47,899 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:00:49,166 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:00:49,171 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:00:49,792 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:00:49,830 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:00:49,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:00:49 WrapperNode [2018-10-23 18:00:49,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:00:49,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:00:49,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:00:49,833 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:00:49,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:00:49" (1/1) ... [2018-10-23 18:00:49,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:00:49" (1/1) ... [2018-10-23 18:00:50,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:00:50,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:00:50,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:00:50,462 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:00:50,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:00:49" (1/1) ... [2018-10-23 18:00:50,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:00:49" (1/1) ... [2018-10-23 18:00:50,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:00:49" (1/1) ... [2018-10-23 18:00:50,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:00:49" (1/1) ... [2018-10-23 18:00:50,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:00:49" (1/1) ... [2018-10-23 18:00:50,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:00:49" (1/1) ... [2018-10-23 18:00:50,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:00:49" (1/1) ... [2018-10-23 18:00:50,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:00:50,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:00:50,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:00:50,785 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:00:50,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:00:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:00:50,856 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:00:50,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:00:50,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:00:59,484 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:00:59,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:00:59 BoogieIcfgContainer [2018-10-23 18:00:59,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:00:59,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:00:59,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:00:59,490 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:00:59,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:00:47" (1/3) ... [2018-10-23 18:00:59,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3420bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:00:59, skipping insertion in model container [2018-10-23 18:00:59,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:00:49" (2/3) ... [2018-10-23 18:00:59,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3420bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:00:59, skipping insertion in model container [2018-10-23 18:00:59,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:00:59" (3/3) ... [2018-10-23 18:00:59,495 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label39_false-unreach-call.c [2018-10-23 18:00:59,505 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:00:59,515 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:00:59,532 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:00:59,590 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:00:59,591 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:00:59,591 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:00:59,591 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:00:59,591 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:00:59,591 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:00:59,592 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:00:59,592 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:00:59,592 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:00:59,643 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-23 18:00:59,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-23 18:00:59,660 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:00:59,661 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:00:59,664 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:00:59,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:00:59,671 INFO L82 PathProgramCache]: Analyzing trace with hash 682595178, now seen corresponding path program 1 times [2018-10-23 18:00:59,673 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:00:59,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:00:59,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:00:59,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:00:59,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:00:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:01:00,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:01:00,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:01:00,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:01:00,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:01:00,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:01:00,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:01:00,037 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-23 18:01:13,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:01:13,173 INFO L93 Difference]: Finished difference Result 3162 states and 6150 transitions. [2018-10-23 18:01:13,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:01:13,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-10-23 18:01:13,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:01:13,217 INFO L225 Difference]: With dead ends: 3162 [2018-10-23 18:01:13,218 INFO L226 Difference]: Without dead ends: 2336 [2018-10-23 18:01:13,226 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:01:13,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2018-10-23 18:01:13,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1568. [2018-10-23 18:01:13,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2018-10-23 18:01:13,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2556 transitions. [2018-10-23 18:01:13,372 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2556 transitions. Word has length 22 [2018-10-23 18:01:13,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:01:13,373 INFO L481 AbstractCegarLoop]: Abstraction has 1568 states and 2556 transitions. [2018-10-23 18:01:13,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:01:13,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2556 transitions. [2018-10-23 18:01:13,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-23 18:01:13,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:01:13,378 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:01:13,379 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:01:13,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:01:13,379 INFO L82 PathProgramCache]: Analyzing trace with hash 797469423, now seen corresponding path program 1 times [2018-10-23 18:01:13,379 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:01:13,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:01:13,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:13,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:01:13,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:01:13,732 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:01:13,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:01:13,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:01:13,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:01:13,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:01:13,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:01:13,735 INFO L87 Difference]: Start difference. First operand 1568 states and 2556 transitions. Second operand 4 states. [2018-10-23 18:01:23,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:01:23,795 INFO L93 Difference]: Finished difference Result 6142 states and 10096 transitions. [2018-10-23 18:01:23,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:01:23,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2018-10-23 18:01:23,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:01:23,820 INFO L225 Difference]: With dead ends: 6142 [2018-10-23 18:01:23,820 INFO L226 Difference]: Without dead ends: 4576 [2018-10-23 18:01:23,824 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:01:23,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2018-10-23 18:01:23,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4576. [2018-10-23 18:01:23,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4576 states. [2018-10-23 18:01:23,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 6531 transitions. [2018-10-23 18:01:23,919 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 6531 transitions. Word has length 98 [2018-10-23 18:01:23,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:01:23,921 INFO L481 AbstractCegarLoop]: Abstraction has 4576 states and 6531 transitions. [2018-10-23 18:01:23,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:01:23,921 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 6531 transitions. [2018-10-23 18:01:23,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-23 18:01:23,924 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:01:23,925 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:01:23,925 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:01:23,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:01:23,925 INFO L82 PathProgramCache]: Analyzing trace with hash 52688714, now seen corresponding path program 1 times [2018-10-23 18:01:23,926 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:01:23,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:01:23,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:23,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:01:23,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:01:24,400 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:01:24,400 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:01:24,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 18:01:24,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:01:24,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:01:24,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:01:24,402 INFO L87 Difference]: Start difference. First operand 4576 states and 6531 transitions. Second operand 6 states. [2018-10-23 18:01:36,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:01:36,735 INFO L93 Difference]: Finished difference Result 15166 states and 21142 transitions. [2018-10-23 18:01:36,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:01:36,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-10-23 18:01:36,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:01:36,783 INFO L225 Difference]: With dead ends: 15166 [2018-10-23 18:01:36,784 INFO L226 Difference]: Without dead ends: 10592 [2018-10-23 18:01:36,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:01:36,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10592 states. [2018-10-23 18:01:36,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10592 to 10592. [2018-10-23 18:01:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10592 states. [2018-10-23 18:01:36,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10592 states to 10592 states and 14292 transitions. [2018-10-23 18:01:37,000 INFO L78 Accepts]: Start accepts. Automaton has 10592 states and 14292 transitions. Word has length 100 [2018-10-23 18:01:37,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:01:37,000 INFO L481 AbstractCegarLoop]: Abstraction has 10592 states and 14292 transitions. [2018-10-23 18:01:37,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:01:37,002 INFO L276 IsEmpty]: Start isEmpty. Operand 10592 states and 14292 transitions. [2018-10-23 18:01:37,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-23 18:01:37,012 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:01:37,012 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:01:37,012 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:01:37,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:01:37,013 INFO L82 PathProgramCache]: Analyzing trace with hash -283688278, now seen corresponding path program 1 times [2018-10-23 18:01:37,013 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:01:37,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:01:37,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:37,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:01:37,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:01:37,396 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 18:01:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:01:37,771 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:01:37,771 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 18:01:37,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:01:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:01:37,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:01:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:01:37,974 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:01:37,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 18:01:37,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:01:37,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:01:37,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:01:37,976 INFO L87 Difference]: Start difference. First operand 10592 states and 14292 transitions. Second operand 7 states. [2018-10-23 18:02:01,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:02:01,135 INFO L93 Difference]: Finished difference Result 39231 states and 53505 transitions. [2018-10-23 18:02:01,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:02:01,136 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2018-10-23 18:02:01,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:02:01,216 INFO L225 Difference]: With dead ends: 39231 [2018-10-23 18:02:01,216 INFO L226 Difference]: Without dead ends: 29393 [2018-10-23 18:02:01,230 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-23 18:02:01,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29393 states. [2018-10-23 18:02:01,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29393 to 29393. [2018-10-23 18:02:01,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29393 states. [2018-10-23 18:02:01,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29393 states to 29393 states and 37591 transitions. [2018-10-23 18:02:01,738 INFO L78 Accepts]: Start accepts. Automaton has 29393 states and 37591 transitions. Word has length 164 [2018-10-23 18:02:01,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:02:01,738 INFO L481 AbstractCegarLoop]: Abstraction has 29393 states and 37591 transitions. [2018-10-23 18:02:01,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:02:01,740 INFO L276 IsEmpty]: Start isEmpty. Operand 29393 states and 37591 transitions. [2018-10-23 18:02:01,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-23 18:02:01,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:02:01,746 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:02:01,747 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:02:01,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:02:01,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1971168649, now seen corresponding path program 1 times [2018-10-23 18:02:01,747 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:02:01,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:02:01,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:01,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:02:01,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:02:02,252 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-23 18:02:02,453 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-10-23 18:02:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 105 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:02:02,577 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:02:02,577 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 18:02:02,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:02:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:02:02,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:02:02,749 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:02:02,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:02:02,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-10-23 18:02:02,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:02:02,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:02:02,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:02:02,773 INFO L87 Difference]: Start difference. First operand 29393 states and 37591 transitions. Second operand 6 states. [2018-10-23 18:02:06,081 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2018-10-23 18:02:19,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:02:19,589 INFO L93 Difference]: Finished difference Result 92656 states and 113907 transitions. [2018-10-23 18:02:19,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 18:02:19,589 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2018-10-23 18:02:19,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:02:19,679 INFO L225 Difference]: With dead ends: 92656 [2018-10-23 18:02:19,679 INFO L226 Difference]: Without dead ends: 61758 [2018-10-23 18:02:19,714 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 205 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:02:19,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61758 states. [2018-10-23 18:02:20,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61758 to 38416. [2018-10-23 18:02:20,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38416 states. [2018-10-23 18:02:20,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38416 states to 38416 states and 45552 transitions. [2018-10-23 18:02:20,286 INFO L78 Accepts]: Start accepts. Automaton has 38416 states and 45552 transitions. Word has length 204 [2018-10-23 18:02:20,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:02:20,286 INFO L481 AbstractCegarLoop]: Abstraction has 38416 states and 45552 transitions. [2018-10-23 18:02:20,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:02:20,287 INFO L276 IsEmpty]: Start isEmpty. Operand 38416 states and 45552 transitions. [2018-10-23 18:02:20,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-23 18:02:20,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:02:20,291 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:02:20,291 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:02:20,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:02:20,292 INFO L82 PathProgramCache]: Analyzing trace with hash -22436739, now seen corresponding path program 1 times [2018-10-23 18:02:20,292 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:02:20,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:02:20,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:20,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:02:20,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:02:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:02:20,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:02:20,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:02:20,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:02:20,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:02:20,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:02:20,695 INFO L87 Difference]: Start difference. First operand 38416 states and 45552 transitions. Second operand 4 states. [2018-10-23 18:02:31,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:02:31,253 INFO L93 Difference]: Finished difference Result 76830 states and 91107 transitions. [2018-10-23 18:02:31,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:02:31,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2018-10-23 18:02:31,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:02:31,315 INFO L225 Difference]: With dead ends: 76830 [2018-10-23 18:02:31,315 INFO L226 Difference]: Without dead ends: 39168 [2018-10-23 18:02:31,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:02:31,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39168 states. [2018-10-23 18:02:32,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39168 to 39168. [2018-10-23 18:02:32,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39168 states. [2018-10-23 18:02:32,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39168 states to 39168 states and 45383 transitions. [2018-10-23 18:02:32,277 INFO L78 Accepts]: Start accepts. Automaton has 39168 states and 45383 transitions. Word has length 241 [2018-10-23 18:02:32,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:02:32,278 INFO L481 AbstractCegarLoop]: Abstraction has 39168 states and 45383 transitions. [2018-10-23 18:02:32,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:02:32,278 INFO L276 IsEmpty]: Start isEmpty. Operand 39168 states and 45383 transitions. [2018-10-23 18:02:32,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-10-23 18:02:32,290 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:02:32,290 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:02:32,290 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:02:32,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:02:32,291 INFO L82 PathProgramCache]: Analyzing trace with hash 55630803, now seen corresponding path program 1 times [2018-10-23 18:02:32,291 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:02:32,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:02:32,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:32,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:02:32,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:02:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-10-23 18:02:32,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:02:32,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:02:32,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:02:32,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:02:32,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:02:32,698 INFO L87 Difference]: Start difference. First operand 39168 states and 45383 transitions. Second operand 3 states. [2018-10-23 18:02:37,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:02:37,877 INFO L93 Difference]: Finished difference Result 77582 states and 90007 transitions. [2018-10-23 18:02:37,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:02:37,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 301 [2018-10-23 18:02:37,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:02:37,926 INFO L225 Difference]: With dead ends: 77582 [2018-10-23 18:02:37,926 INFO L226 Difference]: Without dead ends: 39168 [2018-10-23 18:02:37,953 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:02:37,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39168 states. [2018-10-23 18:02:38,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39168 to 39168. [2018-10-23 18:02:38,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39168 states. [2018-10-23 18:02:38,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39168 states to 39168 states and 44171 transitions. [2018-10-23 18:02:38,380 INFO L78 Accepts]: Start accepts. Automaton has 39168 states and 44171 transitions. Word has length 301 [2018-10-23 18:02:38,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:02:38,381 INFO L481 AbstractCegarLoop]: Abstraction has 39168 states and 44171 transitions. [2018-10-23 18:02:38,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:02:38,381 INFO L276 IsEmpty]: Start isEmpty. Operand 39168 states and 44171 transitions. [2018-10-23 18:02:38,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2018-10-23 18:02:38,414 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:02:38,415 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:02:38,415 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:02:38,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:02:38,416 INFO L82 PathProgramCache]: Analyzing trace with hash -50555018, now seen corresponding path program 1 times [2018-10-23 18:02:38,416 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:02:38,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:02:38,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:38,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:02:38,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:02:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-10-23 18:02:39,053 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:02:39,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:02:39,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:02:39,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:02:39,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:02:39,054 INFO L87 Difference]: Start difference. First operand 39168 states and 44171 transitions. Second operand 5 states. [2018-10-23 18:02:51,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:02:51,782 INFO L93 Difference]: Finished difference Result 139295 states and 161110 transitions. [2018-10-23 18:02:51,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:02:51,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 533 [2018-10-23 18:02:51,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:02:51,903 INFO L225 Difference]: With dead ends: 139295 [2018-10-23 18:02:51,904 INFO L226 Difference]: Without dead ends: 100881 [2018-10-23 18:02:51,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:02:52,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100881 states. [2018-10-23 18:02:52,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100881 to 75313. [2018-10-23 18:02:52,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75313 states. [2018-10-23 18:02:52,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75313 states to 75313 states and 85208 transitions. [2018-10-23 18:02:52,843 INFO L78 Accepts]: Start accepts. Automaton has 75313 states and 85208 transitions. Word has length 533 [2018-10-23 18:02:52,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:02:52,844 INFO L481 AbstractCegarLoop]: Abstraction has 75313 states and 85208 transitions. [2018-10-23 18:02:52,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:02:52,844 INFO L276 IsEmpty]: Start isEmpty. Operand 75313 states and 85208 transitions. [2018-10-23 18:02:52,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2018-10-23 18:02:52,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:02:52,877 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:02:52,878 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:02:52,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:02:52,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1152050398, now seen corresponding path program 1 times [2018-10-23 18:02:52,878 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:02:52,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:02:52,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:52,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:02:52,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:02:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 589 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-23 18:02:54,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:02:54,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:02:54,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:02:54,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:02:54,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:02:54,326 INFO L87 Difference]: Start difference. First operand 75313 states and 85208 transitions. Second operand 3 states. [2018-10-23 18:03:02,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:03:02,102 INFO L93 Difference]: Finished difference Result 159643 states and 182324 transitions. [2018-10-23 18:03:02,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:03:02,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 579 [2018-10-23 18:03:02,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:03:02,222 INFO L225 Difference]: With dead ends: 159643 [2018-10-23 18:03:02,223 INFO L226 Difference]: Without dead ends: 85084 [2018-10-23 18:03:02,272 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:03:02,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85084 states. [2018-10-23 18:03:02,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85084 to 85084. [2018-10-23 18:03:02,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85084 states. [2018-10-23 18:03:02,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85084 states to 85084 states and 97009 transitions. [2018-10-23 18:03:02,977 INFO L78 Accepts]: Start accepts. Automaton has 85084 states and 97009 transitions. Word has length 579 [2018-10-23 18:03:02,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:03:02,978 INFO L481 AbstractCegarLoop]: Abstraction has 85084 states and 97009 transitions. [2018-10-23 18:03:02,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:03:02,978 INFO L276 IsEmpty]: Start isEmpty. Operand 85084 states and 97009 transitions. [2018-10-23 18:03:03,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2018-10-23 18:03:03,008 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:03:03,008 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:03:03,009 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:03:03,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:03:03,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1274414090, now seen corresponding path program 1 times [2018-10-23 18:03:03,009 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:03:03,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:03:03,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:03,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:03:03,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:03:04,567 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 552 proven. 4 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-10-23 18:03:04,567 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:03:04,567 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:03:04,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:03:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:03:04,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:03:04,919 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 684 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2018-10-23 18:03:04,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:03:04,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 18:03:04,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:03:04,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:03:04,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:03:04,943 INFO L87 Difference]: Start difference. First operand 85084 states and 97009 transitions. Second operand 4 states. [2018-10-23 18:03:13,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:03:13,882 INFO L93 Difference]: Finished difference Result 218386 states and 251642 transitions. [2018-10-23 18:03:13,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:03:13,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 635 [2018-10-23 18:03:13,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:03:14,062 INFO L225 Difference]: With dead ends: 218386 [2018-10-23 18:03:14,062 INFO L226 Difference]: Without dead ends: 134056 [2018-10-23 18:03:14,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 635 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:03:14,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134056 states. [2018-10-23 18:03:15,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134056 to 87340. [2018-10-23 18:03:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87340 states. [2018-10-23 18:03:15,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87340 states to 87340 states and 96324 transitions. [2018-10-23 18:03:15,702 INFO L78 Accepts]: Start accepts. Automaton has 87340 states and 96324 transitions. Word has length 635 [2018-10-23 18:03:15,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:03:15,703 INFO L481 AbstractCegarLoop]: Abstraction has 87340 states and 96324 transitions. [2018-10-23 18:03:15,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:03:15,703 INFO L276 IsEmpty]: Start isEmpty. Operand 87340 states and 96324 transitions. [2018-10-23 18:03:15,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2018-10-23 18:03:15,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:03:15,728 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:03:15,729 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:03:15,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:03:15,729 INFO L82 PathProgramCache]: Analyzing trace with hash 2070167299, now seen corresponding path program 1 times [2018-10-23 18:03:15,729 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:03:15,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:03:15,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:15,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:03:15,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:03:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 499 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-23 18:03:16,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:03:16,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:03:16,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:03:16,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:03:16,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:03:16,245 INFO L87 Difference]: Start difference. First operand 87340 states and 96324 transitions. Second operand 3 states. [2018-10-23 18:03:21,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:03:21,184 INFO L93 Difference]: Finished difference Result 173926 states and 191889 transitions. [2018-10-23 18:03:21,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:03:21,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 738 [2018-10-23 18:03:21,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:03:21,274 INFO L225 Difference]: With dead ends: 173926 [2018-10-23 18:03:21,274 INFO L226 Difference]: Without dead ends: 87340 [2018-10-23 18:03:21,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:03:21,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87340 states. [2018-10-23 18:03:21,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87340 to 87340. [2018-10-23 18:03:21,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87340 states. [2018-10-23 18:03:22,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87340 states to 87340 states and 93729 transitions. [2018-10-23 18:03:22,035 INFO L78 Accepts]: Start accepts. Automaton has 87340 states and 93729 transitions. Word has length 738 [2018-10-23 18:03:22,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:03:22,036 INFO L481 AbstractCegarLoop]: Abstraction has 87340 states and 93729 transitions. [2018-10-23 18:03:22,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:03:22,036 INFO L276 IsEmpty]: Start isEmpty. Operand 87340 states and 93729 transitions. [2018-10-23 18:03:22,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2018-10-23 18:03:22,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:03:22,068 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:03:22,068 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:03:22,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:03:22,069 INFO L82 PathProgramCache]: Analyzing trace with hash 46396595, now seen corresponding path program 1 times [2018-10-23 18:03:22,069 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:03:22,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:03:22,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:22,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:03:22,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:03:23,012 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-23 18:03:23,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:03:23,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:03:23,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:03:23,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:03:23,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:03:23,013 INFO L87 Difference]: Start difference. First operand 87340 states and 93729 transitions. Second operand 4 states. [2018-10-23 18:03:34,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:03:34,705 INFO L93 Difference]: Finished difference Result 204005 states and 218554 transitions. [2018-10-23 18:03:34,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:03:34,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 770 [2018-10-23 18:03:34,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:03:34,829 INFO L225 Difference]: With dead ends: 204005 [2018-10-23 18:03:34,829 INFO L226 Difference]: Without dead ends: 109877 [2018-10-23 18:03:34,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:03:34,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109877 states. [2018-10-23 18:03:35,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109877 to 105365. [2018-10-23 18:03:35,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105365 states. [2018-10-23 18:03:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105365 states to 105365 states and 111077 transitions. [2018-10-23 18:03:36,690 INFO L78 Accepts]: Start accepts. Automaton has 105365 states and 111077 transitions. Word has length 770 [2018-10-23 18:03:36,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:03:36,691 INFO L481 AbstractCegarLoop]: Abstraction has 105365 states and 111077 transitions. [2018-10-23 18:03:36,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:03:36,691 INFO L276 IsEmpty]: Start isEmpty. Operand 105365 states and 111077 transitions. [2018-10-23 18:03:36,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 875 [2018-10-23 18:03:36,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:03:36,736 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:03:36,736 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:03:36,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:03:36,737 INFO L82 PathProgramCache]: Analyzing trace with hash 25904175, now seen corresponding path program 1 times [2018-10-23 18:03:36,737 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:03:36,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:03:36,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:36,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:03:36,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:03:37,848 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-23 18:03:38,315 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2018-10-23 18:03:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 774 proven. 5 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-23 18:03:41,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:03:41,179 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 18:03:41,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:03:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:03:41,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:03:50,502 WARN L179 SmtUtils]: Spent 8.19 s on a formula simplification. DAG size of input: 142 DAG size of output: 23 [2018-10-23 18:03:53,305 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 605 proven. 174 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-23 18:03:53,327 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:03:53,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4] total 15 [2018-10-23 18:03:53,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-23 18:03:53,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-23 18:03:53,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2018-10-23 18:03:53,330 INFO L87 Difference]: Start difference. First operand 105365 states and 111077 transitions. Second operand 15 states. [2018-10-23 18:04:23,796 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 Received shutdown request... [2018-10-23 18:04:45,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-23 18:04:45,483 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:04:45,489 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:04:45,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:04:45 BoogieIcfgContainer [2018-10-23 18:04:45,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:04:45,490 INFO L168 Benchmark]: Toolchain (without parser) took 237771.52 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 988.3 MB in the end (delta: 414.8 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-23 18:04:45,491 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:04:45,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2109.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:04:45,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 629.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -985.2 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-23 18:04:45,495 INFO L168 Benchmark]: Boogie Preprocessor took 322.15 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: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:04:45,496 INFO L168 Benchmark]: RCFGBuilder took 8701.27 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 242.2 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -206.3 MB). Peak memory consumption was 649.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:04:45,498 INFO L168 Benchmark]: TraceAbstraction took 226002.69 ms. Allocated memory was 2.6 GB in the beginning and 3.2 GB in the end (delta: 683.7 MB). Free memory was 2.3 GB in the beginning and 988.3 MB in the end (delta: 1.4 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-23 18:04:45,506 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 2109.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 629.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -985.2 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 322.15 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: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8701.27 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 242.2 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -206.3 MB). Peak memory consumption was 649.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226002.69 ms. Allocated memory was 2.6 GB in the beginning and 3.2 GB in the end (delta: 683.7 MB). Free memory was 2.3 GB in the beginning and 988.3 MB in the end (delta: 1.4 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 75). Cancelled while BasicCegarLoop was constructing difference of abstraction (105365states) and FLOYD_HOARE automaton (currently 24 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (106567 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 225.9s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 190.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9102 SDtfs, 38588 SDslu, 1616 SDs, 0 SdLazy, 86642 SolverSat, 14786 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 161.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1981 GetRequests, 1906 SyntacticMatches, 15 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105365occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 100906 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 18.6s InterpolantComputationTime, 7136 NumberOfCodeBlocks, 7136 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 7119 ConstructedInterpolants, 413 QuantifiedInterpolants, 32232383 SizeOfPredicates, 7 NumberOfNonLiveVariables, 2335 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 17 InterpolantComputations, 12 PerfectInterpolantSequences, 6195/6387 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown