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/Problem18_label19_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:41:58,613 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:41:58,618 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:41:58,639 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:41:58,639 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:41:58,641 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:41:58,644 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:41:58,647 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:41:58,649 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:41:58,650 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:41:58,657 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:41:58,657 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:41:58,658 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:41:58,663 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:41:58,666 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:41:58,667 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:41:58,668 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:41:58,669 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:41:58,674 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:41:58,676 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:41:58,679 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:41:58,680 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:41:58,682 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:41:58,682 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:41:58,682 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:41:58,683 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:41:58,684 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:41:58,685 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:41:58,685 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:41:58,686 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:41:58,687 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:41:58,687 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:41:58,690 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 [2018-10-26 19:41:58,710 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:41:58,710 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:41:58,711 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:41:58,711 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:41:58,711 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:41:58,712 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:41:58,712 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:41:58,712 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:41:58,712 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:41:58,713 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:41:58,713 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:41:58,714 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:41:58,714 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:41:58,714 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:41:58,714 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:41:58,714 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:41:58,715 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:41:58,715 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:41:58,715 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:41:58,715 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:41:58,715 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:41:58,717 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:41:58,717 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:41:58,717 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:41:58,717 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:41:58,717 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:41:58,718 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:41:58,718 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:41:58,770 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:41:58,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:41:58,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:41:58,788 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:41:58,789 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:41:58,790 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label19_false-unreach-call.c [2018-10-26 19:41:58,853 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/160c30d80/a11a09c587764137863526c1f199bad8/FLAGc034dc22e [2018-10-26 19:41:59,629 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:41:59,630 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label19_false-unreach-call.c [2018-10-26 19:41:59,653 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/160c30d80/a11a09c587764137863526c1f199bad8/FLAGc034dc22e [2018-10-26 19:41:59,669 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/160c30d80/a11a09c587764137863526c1f199bad8 [2018-10-26 19:41:59,680 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:41:59,682 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:41:59,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:41:59,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:41:59,687 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:41:59,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:41:59" (1/1) ... [2018-10-26 19:41:59,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ccbb6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:41:59, skipping insertion in model container [2018-10-26 19:41:59,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:41:59" (1/1) ... [2018-10-26 19:41:59,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:41:59,840 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:42:01,046 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:42:01,051 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:42:01,461 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:42:01,488 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:42:01,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:42:01 WrapperNode [2018-10-26 19:42:01,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:42:01,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:42:01,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:42:01,490 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:42:01,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:42:01" (1/1) ... [2018-10-26 19:42:01,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:42:01" (1/1) ... [2018-10-26 19:42:01,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:42:01,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:42:01,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:42:01,938 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:42:01,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:42:01" (1/1) ... [2018-10-26 19:42:01,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:42:01" (1/1) ... [2018-10-26 19:42:01,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:42:01" (1/1) ... [2018-10-26 19:42:01,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:42:01" (1/1) ... [2018-10-26 19:42:02,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:42:01" (1/1) ... [2018-10-26 19:42:02,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:42:01" (1/1) ... [2018-10-26 19:42:02,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:42:01" (1/1) ... [2018-10-26 19:42:02,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:42:02,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:42:02,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:42:02,161 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:42:02,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:42:01" (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 [2018-10-26 19:42:02,231 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:42:02,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:42:02,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:42:09,265 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:42:09,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:42:09 BoogieIcfgContainer [2018-10-26 19:42:09,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:42:09,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:42:09,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:42:09,270 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:42:09,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:41:59" (1/3) ... [2018-10-26 19:42:09,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7769d0cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:42:09, skipping insertion in model container [2018-10-26 19:42:09,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:42:01" (2/3) ... [2018-10-26 19:42:09,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7769d0cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:42:09, skipping insertion in model container [2018-10-26 19:42:09,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:42:09" (3/3) ... [2018-10-26 19:42:09,274 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label19_false-unreach-call.c [2018-10-26 19:42:09,284 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:42:09,293 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:42:09,312 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:42:09,366 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:42:09,367 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:42:09,367 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:42:09,367 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:42:09,368 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:42:09,368 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:42:09,368 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:42:09,368 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:42:09,368 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:42:09,405 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-26 19:42:09,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-26 19:42:09,413 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:42:09,414 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:42:09,417 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:42:09,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:42:09,423 INFO L82 PathProgramCache]: Analyzing trace with hash -974970054, now seen corresponding path program 1 times [2018-10-26 19:42:09,426 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:42:09,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:42:09,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:09,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:42:09,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:42:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:42:09,740 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:42:09,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:42:09,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:42:09,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:42:09,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:42:09,760 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-10-26 19:42:23,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:42:23,689 INFO L93 Difference]: Finished difference Result 3599 states and 7034 transitions. [2018-10-26 19:42:23,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:42:23,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-10-26 19:42:23,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:42:23,751 INFO L225 Difference]: With dead ends: 3599 [2018-10-26 19:42:23,752 INFO L226 Difference]: Without dead ends: 2831 [2018-10-26 19:42:23,765 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:42:23,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2018-10-26 19:42:23,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2831. [2018-10-26 19:42:23,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2831 states. [2018-10-26 19:42:23,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 4101 transitions. [2018-10-26 19:42:23,949 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 4101 transitions. Word has length 10 [2018-10-26 19:42:23,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:42:23,950 INFO L481 AbstractCegarLoop]: Abstraction has 2831 states and 4101 transitions. [2018-10-26 19:42:23,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:42:23,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 4101 transitions. [2018-10-26 19:42:23,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-26 19:42:23,960 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:42:23,960 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:42:23,961 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:42:23,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:42:23,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1784029265, now seen corresponding path program 1 times [2018-10-26 19:42:23,961 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:42:23,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:42:23,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:23,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:42:23,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:42:24,949 WARN L179 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2018-10-26 19:42:25,216 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-26 19:42:25,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:42:25,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:42:25,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:42:25,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:42:25,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:42:25,220 INFO L87 Difference]: Start difference. First operand 2831 states and 4101 transitions. Second operand 5 states. [2018-10-26 19:42:37,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:42:37,459 INFO L93 Difference]: Finished difference Result 8424 states and 12649 transitions. [2018-10-26 19:42:37,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:42:37,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2018-10-26 19:42:37,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:42:37,487 INFO L225 Difference]: With dead ends: 8424 [2018-10-26 19:42:37,487 INFO L226 Difference]: Without dead ends: 5595 [2018-10-26 19:42:37,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:42:37,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2018-10-26 19:42:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 5595. [2018-10-26 19:42:37,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5595 states. [2018-10-26 19:42:37,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5595 states to 5595 states and 7136 transitions. [2018-10-26 19:42:37,600 INFO L78 Accepts]: Start accepts. Automaton has 5595 states and 7136 transitions. Word has length 172 [2018-10-26 19:42:37,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:42:37,601 INFO L481 AbstractCegarLoop]: Abstraction has 5595 states and 7136 transitions. [2018-10-26 19:42:37,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:42:37,601 INFO L276 IsEmpty]: Start isEmpty. Operand 5595 states and 7136 transitions. [2018-10-26 19:42:37,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-26 19:42:37,607 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:42:37,607 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:42:37,607 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:42:37,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:42:37,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1485546131, now seen corresponding path program 1 times [2018-10-26 19:42:37,608 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:42:37,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:42:37,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:37,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:42:37,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:42:38,042 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-10-26 19:42:38,043 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:42:38,043 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 [2018-10-26 19:42:38,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:42:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:42:38,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:42:38,238 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:42:38,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:42:38,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 19:42:38,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:42:38,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:42:38,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:42:38,275 INFO L87 Difference]: Start difference. First operand 5595 states and 7136 transitions. Second operand 4 states. [2018-10-26 19:42:46,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:42:46,102 INFO L93 Difference]: Finished difference Result 16042 states and 21992 transitions. [2018-10-26 19:42:46,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:42:46,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 261 [2018-10-26 19:42:46,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:42:46,160 INFO L225 Difference]: With dead ends: 16042 [2018-10-26 19:42:46,161 INFO L226 Difference]: Without dead ends: 11140 [2018-10-26 19:42:46,171 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:42:46,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11140 states. [2018-10-26 19:42:46,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11140 to 7668. [2018-10-26 19:42:46,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7668 states. [2018-10-26 19:42:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7668 states to 7668 states and 9572 transitions. [2018-10-26 19:42:46,360 INFO L78 Accepts]: Start accepts. Automaton has 7668 states and 9572 transitions. Word has length 261 [2018-10-26 19:42:46,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:42:46,361 INFO L481 AbstractCegarLoop]: Abstraction has 7668 states and 9572 transitions. [2018-10-26 19:42:46,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:42:46,361 INFO L276 IsEmpty]: Start isEmpty. Operand 7668 states and 9572 transitions. [2018-10-26 19:42:46,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-10-26 19:42:46,370 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:42:46,371 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:42:46,371 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:42:46,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:42:46,371 INFO L82 PathProgramCache]: Analyzing trace with hash 21793440, now seen corresponding path program 1 times [2018-10-26 19:42:46,372 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:42:46,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:42:46,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:46,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:42:46,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:42:46,841 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-26 19:42:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 101 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:42:47,012 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:42:47,012 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 [2018-10-26 19:42:47,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:42:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:42:47,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:42:47,333 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-26 19:42:47,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:42:47,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-10-26 19:42:47,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:42:47,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:42:47,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:42:47,356 INFO L87 Difference]: Start difference. First operand 7668 states and 9572 transitions. Second operand 6 states. [2018-10-26 19:42:57,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:42:57,524 INFO L93 Difference]: Finished difference Result 23637 states and 30091 transitions. [2018-10-26 19:42:57,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:42:57,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 284 [2018-10-26 19:42:57,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:42:57,586 INFO L225 Difference]: With dead ends: 23637 [2018-10-26 19:42:57,586 INFO L226 Difference]: Without dead ends: 15278 [2018-10-26 19:42:57,597 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 283 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:42:57,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15278 states. [2018-10-26 19:42:57,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15278 to 11813. [2018-10-26 19:42:57,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11813 states. [2018-10-26 19:42:57,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11813 states to 11813 states and 13144 transitions. [2018-10-26 19:42:57,823 INFO L78 Accepts]: Start accepts. Automaton has 11813 states and 13144 transitions. Word has length 284 [2018-10-26 19:42:57,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:42:57,823 INFO L481 AbstractCegarLoop]: Abstraction has 11813 states and 13144 transitions. [2018-10-26 19:42:57,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:42:57,824 INFO L276 IsEmpty]: Start isEmpty. Operand 11813 states and 13144 transitions. [2018-10-26 19:42:57,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2018-10-26 19:42:57,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:42:57,858 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:42:57,858 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:42:57,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:42:57,859 INFO L82 PathProgramCache]: Analyzing trace with hash -843684820, now seen corresponding path program 1 times [2018-10-26 19:42:57,859 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:42:57,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:42:57,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:57,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:42:57,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:42:59,083 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2018-10-26 19:42:59,084 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:42:59,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:42:59,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:42:59,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:42:59,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:42:59,086 INFO L87 Difference]: Start difference. First operand 11813 states and 13144 transitions. Second operand 4 states. [2018-10-26 19:43:04,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:43:04,670 INFO L93 Difference]: Finished difference Result 29858 states and 34514 transitions. [2018-10-26 19:43:04,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:43:04,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 967 [2018-10-26 19:43:04,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:43:04,706 INFO L225 Difference]: With dead ends: 29858 [2018-10-26 19:43:04,706 INFO L226 Difference]: Without dead ends: 18738 [2018-10-26 19:43:04,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:43:04,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18738 states. [2018-10-26 19:43:04,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18738 to 18738. [2018-10-26 19:43:04,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18738 states. [2018-10-26 19:43:04,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18738 states to 18738 states and 21045 transitions. [2018-10-26 19:43:04,957 INFO L78 Accepts]: Start accepts. Automaton has 18738 states and 21045 transitions. Word has length 967 [2018-10-26 19:43:04,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:43:04,959 INFO L481 AbstractCegarLoop]: Abstraction has 18738 states and 21045 transitions. [2018-10-26 19:43:04,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:43:04,959 INFO L276 IsEmpty]: Start isEmpty. Operand 18738 states and 21045 transitions. [2018-10-26 19:43:04,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 982 [2018-10-26 19:43:04,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:43:05,000 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:43:05,000 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:43:05,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:43:05,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1206651081, now seen corresponding path program 1 times [2018-10-26 19:43:05,001 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:43:05,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:43:05,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:05,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:43:05,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:43:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2018-10-26 19:43:06,238 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:43:06,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:43:06,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:43:06,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:43:06,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:43:06,240 INFO L87 Difference]: Start difference. First operand 18738 states and 21045 transitions. Second operand 3 states. [2018-10-26 19:43:10,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:43:10,476 INFO L93 Difference]: Finished difference Result 36783 states and 41396 transitions. [2018-10-26 19:43:10,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:43:10,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 981 [2018-10-26 19:43:10,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:43:10,514 INFO L225 Difference]: With dead ends: 36783 [2018-10-26 19:43:10,514 INFO L226 Difference]: Without dead ends: 18738 [2018-10-26 19:43:10,535 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:43:10,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18738 states. [2018-10-26 19:43:10,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18738 to 18738. [2018-10-26 19:43:10,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18738 states. [2018-10-26 19:43:10,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18738 states to 18738 states and 20560 transitions. [2018-10-26 19:43:10,761 INFO L78 Accepts]: Start accepts. Automaton has 18738 states and 20560 transitions. Word has length 981 [2018-10-26 19:43:10,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:43:10,763 INFO L481 AbstractCegarLoop]: Abstraction has 18738 states and 20560 transitions. [2018-10-26 19:43:10,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:43:10,763 INFO L276 IsEmpty]: Start isEmpty. Operand 18738 states and 20560 transitions. [2018-10-26 19:43:10,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1073 [2018-10-26 19:43:10,777 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:43:10,778 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:43:10,778 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:43:10,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:43:10,782 INFO L82 PathProgramCache]: Analyzing trace with hash 2028699065, now seen corresponding path program 1 times [2018-10-26 19:43:10,782 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:43:10,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:43:10,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:10,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:43:10,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:43:11,678 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 19:43:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 285 proven. 541 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-10-26 19:43:13,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:43:13,704 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 [2018-10-26 19:43:13,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:43:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:43:13,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:43:14,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2018-10-26 19:43:14,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:43:14,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2018-10-26 19:43:14,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 19:43:14,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 19:43:14,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-26 19:43:14,789 INFO L87 Difference]: Start difference. First operand 18738 states and 20560 transitions. Second operand 10 states. [2018-10-26 19:43:40,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:43:40,050 INFO L93 Difference]: Finished difference Result 90895 states and 101745 transitions. [2018-10-26 19:43:40,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-26 19:43:40,051 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1072 [2018-10-26 19:43:40,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:43:40,151 INFO L225 Difference]: With dead ends: 90895 [2018-10-26 19:43:40,151 INFO L226 Difference]: Without dead ends: 59023 [2018-10-26 19:43:40,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1106 GetRequests, 1084 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2018-10-26 19:43:40,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59023 states. [2018-10-26 19:43:40,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59023 to 23533. [2018-10-26 19:43:40,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23533 states. [2018-10-26 19:43:40,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23533 states to 23533 states and 24860 transitions. [2018-10-26 19:43:40,645 INFO L78 Accepts]: Start accepts. Automaton has 23533 states and 24860 transitions. Word has length 1072 [2018-10-26 19:43:40,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:43:40,647 INFO L481 AbstractCegarLoop]: Abstraction has 23533 states and 24860 transitions. [2018-10-26 19:43:40,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 19:43:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 23533 states and 24860 transitions. [2018-10-26 19:43:40,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1240 [2018-10-26 19:43:40,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:43:40,674 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:43:40,674 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:43:40,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:43:40,675 INFO L82 PathProgramCache]: Analyzing trace with hash 27924076, now seen corresponding path program 1 times [2018-10-26 19:43:40,675 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:43:40,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:43:40,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:40,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:43:40,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:43:41,637 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-26 19:43:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 993 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2018-10-26 19:43:42,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:43:42,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:43:42,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:43:42,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:43:42,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:43:42,704 INFO L87 Difference]: Start difference. First operand 23533 states and 24860 transitions. Second operand 4 states. [2018-10-26 19:43:49,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:43:49,128 INFO L93 Difference]: Finished difference Result 85756 states and 90889 transitions. [2018-10-26 19:43:49,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:43:49,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1239 [2018-10-26 19:43:49,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:43:49,189 INFO L225 Difference]: With dead ends: 85756 [2018-10-26 19:43:49,189 INFO L226 Difference]: Without dead ends: 61532 [2018-10-26 19:43:49,214 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:43:49,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61532 states. [2018-10-26 19:43:49,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61532 to 59459. [2018-10-26 19:43:49,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59459 states. [2018-10-26 19:43:49,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59459 states to 59459 states and 62175 transitions. [2018-10-26 19:43:49,880 INFO L78 Accepts]: Start accepts. Automaton has 59459 states and 62175 transitions. Word has length 1239 [2018-10-26 19:43:49,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:43:49,880 INFO L481 AbstractCegarLoop]: Abstraction has 59459 states and 62175 transitions. [2018-10-26 19:43:49,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:43:49,881 INFO L276 IsEmpty]: Start isEmpty. Operand 59459 states and 62175 transitions. [2018-10-26 19:43:49,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1373 [2018-10-26 19:43:49,928 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:43:49,930 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:43:49,930 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:43:49,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:43:49,931 INFO L82 PathProgramCache]: Analyzing trace with hash 565562273, now seen corresponding path program 1 times [2018-10-26 19:43:49,931 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:43:49,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:43:49,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:49,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:43:49,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:43:50,824 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-26 19:43:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1811 backedges. 1331 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2018-10-26 19:43:51,720 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:43:51,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:43:51,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:43:51,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:43:51,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:43:51,723 INFO L87 Difference]: Start difference. First operand 59459 states and 62175 transitions. Second operand 4 states. [2018-10-26 19:43:57,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:43:57,329 INFO L93 Difference]: Finished difference Result 147245 states and 154445 transitions. [2018-10-26 19:43:57,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:43:57,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1372 [2018-10-26 19:43:57,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:43:57,444 INFO L225 Difference]: With dead ends: 147245 [2018-10-26 19:43:57,444 INFO L226 Difference]: Without dead ends: 87095 [2018-10-26 19:43:57,492 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:43:57,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87095 states. [2018-10-26 19:43:58,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87095 to 85713. [2018-10-26 19:43:58,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85713 states. [2018-10-26 19:43:58,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85713 states to 85713 states and 89307 transitions. [2018-10-26 19:43:58,380 INFO L78 Accepts]: Start accepts. Automaton has 85713 states and 89307 transitions. Word has length 1372 [2018-10-26 19:43:58,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:43:58,380 INFO L481 AbstractCegarLoop]: Abstraction has 85713 states and 89307 transitions. [2018-10-26 19:43:58,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:43:58,381 INFO L276 IsEmpty]: Start isEmpty. Operand 85713 states and 89307 transitions. [2018-10-26 19:43:58,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1446 [2018-10-26 19:43:58,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:43:58,421 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:43:58,421 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:43:58,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:43:58,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1984408622, now seen corresponding path program 1 times [2018-10-26 19:43:58,422 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:43:58,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:43:58,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:58,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:43:58,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:44:00,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2183 backedges. 1485 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2018-10-26 19:44:00,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:44:00,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:44:00,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:44:00,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:44:00,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:44:00,036 INFO L87 Difference]: Start difference. First operand 85713 states and 89307 transitions. Second operand 4 states. [2018-10-26 19:44:05,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:44:05,077 INFO L93 Difference]: Finished difference Result 174188 states and 181591 transitions. [2018-10-26 19:44:05,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:44:05,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1445 [2018-10-26 19:44:05,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:44:05,164 INFO L225 Difference]: With dead ends: 174188 [2018-10-26 19:44:05,164 INFO L226 Difference]: Without dead ends: 89168 [2018-10-26 19:44:05,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:44:05,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89168 states. [2018-10-26 19:44:06,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89168 to 88477. [2018-10-26 19:44:06,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88477 states. [2018-10-26 19:44:06,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88477 states to 88477 states and 91598 transitions. [2018-10-26 19:44:06,260 INFO L78 Accepts]: Start accepts. Automaton has 88477 states and 91598 transitions. Word has length 1445 [2018-10-26 19:44:06,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:44:06,260 INFO L481 AbstractCegarLoop]: Abstraction has 88477 states and 91598 transitions. [2018-10-26 19:44:06,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:44:06,261 INFO L276 IsEmpty]: Start isEmpty. Operand 88477 states and 91598 transitions. [2018-10-26 19:44:06,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1456 [2018-10-26 19:44:06,290 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:44:06,291 INFO L375 BasicCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:44:06,291 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:44:06,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:44:06,292 INFO L82 PathProgramCache]: Analyzing trace with hash 2175790, now seen corresponding path program 1 times [2018-10-26 19:44:06,292 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:44:06,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:44:06,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:06,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:44:06,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:44:07,727 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-10-26 19:44:08,019 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-10-26 19:44:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 770 proven. 1265 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-10-26 19:44:11,712 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:44:11,712 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 [2018-10-26 19:44:11,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:44:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:44:12,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:44:13,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 1326 proven. 0 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2018-10-26 19:44:13,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:44:13,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-10-26 19:44:13,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 19:44:13,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 19:44:13,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-10-26 19:44:13,918 INFO L87 Difference]: Start difference. First operand 88477 states and 91598 transitions. Second operand 12 states. [2018-10-26 19:44:32,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:44:32,301 INFO L93 Difference]: Finished difference Result 240254 states and 249302 transitions. [2018-10-26 19:44:32,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-26 19:44:32,302 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1455 [2018-10-26 19:44:32,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:44:32,466 INFO L225 Difference]: With dead ends: 240254 [2018-10-26 19:44:32,466 INFO L226 Difference]: Without dead ends: 152470 [2018-10-26 19:44:32,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1496 GetRequests, 1467 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=228, Invalid=584, Unknown=0, NotChecked=0, Total=812 [2018-10-26 19:44:32,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152470 states. [2018-10-26 19:44:33,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152470 to 110589. [2018-10-26 19:44:33,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110589 states. [2018-10-26 19:44:34,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110589 states to 110589 states and 114231 transitions. [2018-10-26 19:44:34,360 INFO L78 Accepts]: Start accepts. Automaton has 110589 states and 114231 transitions. Word has length 1455 [2018-10-26 19:44:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:44:34,361 INFO L481 AbstractCegarLoop]: Abstraction has 110589 states and 114231 transitions. [2018-10-26 19:44:34,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-26 19:44:34,361 INFO L276 IsEmpty]: Start isEmpty. Operand 110589 states and 114231 transitions. [2018-10-26 19:44:34,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1475 [2018-10-26 19:44:34,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:44:34,392 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 2, 2, 2, 2, 2, 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] [2018-10-26 19:44:34,393 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:44:34,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:44:34,394 INFO L82 PathProgramCache]: Analyzing trace with hash 638336125, now seen corresponding path program 1 times [2018-10-26 19:44:34,394 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:44:34,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:44:34,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:34,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:44:34,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:44:35,775 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-10-26 19:44:36,161 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-10-26 19:44:39,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 579 proven. 1551 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2018-10-26 19:44:39,637 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:44:39,637 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 19:44:39,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:44:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:44:39,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:44:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 1317 proven. 0 refuted. 0 times theorem prover too weak. 1043 trivial. 0 not checked. [2018-10-26 19:44:41,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:44:41,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-10-26 19:44:41,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 19:44:41,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 19:44:41,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-26 19:44:41,073 INFO L87 Difference]: Start difference. First operand 110589 states and 114231 transitions. Second operand 12 states. [2018-10-26 19:44:58,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:44:58,444 INFO L93 Difference]: Finished difference Result 258526 states and 266975 transitions. [2018-10-26 19:44:58,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-26 19:44:58,445 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1474 [2018-10-26 19:44:58,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:44:58,946 INFO L225 Difference]: With dead ends: 258526 [2018-10-26 19:44:58,946 INFO L226 Difference]: Without dead ends: 148630 [2018-10-26 19:44:58,999 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1515 GetRequests, 1486 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2018-10-26 19:44:59,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148630 states. [2018-10-26 19:45:00,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148630 to 105058. [2018-10-26 19:45:00,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105058 states. [2018-10-26 19:45:00,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105058 states to 105058 states and 107496 transitions. [2018-10-26 19:45:00,188 INFO L78 Accepts]: Start accepts. Automaton has 105058 states and 107496 transitions. Word has length 1474 [2018-10-26 19:45:00,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:00,189 INFO L481 AbstractCegarLoop]: Abstraction has 105058 states and 107496 transitions. [2018-10-26 19:45:00,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-26 19:45:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand 105058 states and 107496 transitions. [2018-10-26 19:45:00,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1588 [2018-10-26 19:45:00,228 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:00,229 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-26 19:45:00,229 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:00,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:00,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1777229237, now seen corresponding path program 1 times [2018-10-26 19:45:00,230 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:00,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:00,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:00,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:00,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:01,462 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-26 19:45:02,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2519 backedges. 1988 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-10-26 19:45:02,760 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:45:02,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:45:02,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:45:02,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:45:02,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:02,762 INFO L87 Difference]: Start difference. First operand 105058 states and 107496 transitions. Second operand 4 states. [2018-10-26 19:45:08,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:45:08,468 INFO L93 Difference]: Finished difference Result 209418 states and 214311 transitions. [2018-10-26 19:45:08,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:45:08,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1587 [2018-10-26 19:45:08,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:45:08,574 INFO L225 Difference]: With dead ends: 209418 [2018-10-26 19:45:08,574 INFO L226 Difference]: Without dead ends: 103669 [2018-10-26 19:45:08,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:08,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103669 states. [2018-10-26 19:45:09,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103669 to 101596. [2018-10-26 19:45:09,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101596 states. [2018-10-26 19:45:09,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101596 states to 101596 states and 103708 transitions. [2018-10-26 19:45:09,584 INFO L78 Accepts]: Start accepts. Automaton has 101596 states and 103708 transitions. Word has length 1587 [2018-10-26 19:45:09,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:09,585 INFO L481 AbstractCegarLoop]: Abstraction has 101596 states and 103708 transitions. [2018-10-26 19:45:09,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:45:09,585 INFO L276 IsEmpty]: Start isEmpty. Operand 101596 states and 103708 transitions. [2018-10-26 19:45:09,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1623 [2018-10-26 19:45:09,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:09,633 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:45:09,633 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:09,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:09,634 INFO L82 PathProgramCache]: Analyzing trace with hash -115192492, now seen corresponding path program 1 times [2018-10-26 19:45:09,634 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:09,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:09,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:09,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:09,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2563 backedges. 1865 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2018-10-26 19:45:12,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:45:12,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:45:12,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:45:12,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:45:12,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:45:12,002 INFO L87 Difference]: Start difference. First operand 101596 states and 103708 transitions. Second operand 3 states. [2018-10-26 19:45:15,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:45:15,142 INFO L93 Difference]: Finished difference Result 203190 states and 207417 transitions. [2018-10-26 19:45:15,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:45:15,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1622 [2018-10-26 19:45:15,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:45:15,245 INFO L225 Difference]: With dead ends: 203190 [2018-10-26 19:45:15,245 INFO L226 Difference]: Without dead ends: 102287 [2018-10-26 19:45:15,288 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 [2018-10-26 19:45:15,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102287 states. [2018-10-26 19:45:16,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102287 to 102287. [2018-10-26 19:45:16,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102287 states. [2018-10-26 19:45:16,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102287 states to 102287 states and 104398 transitions. [2018-10-26 19:45:16,625 INFO L78 Accepts]: Start accepts. Automaton has 102287 states and 104398 transitions. Word has length 1622 [2018-10-26 19:45:16,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:16,627 INFO L481 AbstractCegarLoop]: Abstraction has 102287 states and 104398 transitions. [2018-10-26 19:45:16,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:45:16,627 INFO L276 IsEmpty]: Start isEmpty. Operand 102287 states and 104398 transitions. [2018-10-26 19:45:16,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1721 [2018-10-26 19:45:16,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:16,673 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-26 19:45:16,673 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:16,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:16,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1382658394, now seen corresponding path program 1 times [2018-10-26 19:45:16,674 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:16,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:16,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:16,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:16,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:19,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3219 backedges. 1978 proven. 663 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-10-26 19:45:19,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:45:19,477 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:45:19,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:19,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:45:20,647 WARN L179 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 23 [2018-10-26 19:45:21,354 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-26 19:45:22,190 WARN L179 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 615 DAG size of output: 29 [2018-10-26 19:45:32,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3219 backedges. 982 proven. 1659 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-10-26 19:45:32,959 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:45:32,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-10-26 19:45:32,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 19:45:32,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 19:45:32,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-10-26 19:45:32,962 INFO L87 Difference]: Start difference. First operand 102287 states and 104398 transitions. Second operand 11 states. Received shutdown request... [2018-10-26 19:45:45,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-26 19:45:45,962 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:45:45,968 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:45:45,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:45:45 BoogieIcfgContainer [2018-10-26 19:45:45,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:45:45,970 INFO L168 Benchmark]: Toolchain (without parser) took 226289.11 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-26 19:45:45,971 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-10-26 19:45:45,972 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1806.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:45:45,972 INFO L168 Benchmark]: Boogie Procedure Inliner took 447.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -944.6 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:45:45,973 INFO L168 Benchmark]: Boogie Preprocessor took 222.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. [2018-10-26 19:45:45,974 INFO L168 Benchmark]: RCFGBuilder took 7105.33 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 524.4 MB). Peak memory consumption was 524.4 MB. Max. memory is 7.1 GB. [2018-10-26 19:45:45,975 INFO L168 Benchmark]: TraceAbstraction took 216702.05 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: -773.6 MB). Peak memory consumption was 888.4 MB. Max. memory is 7.1 GB. [2018-10-26 19:45:45,980 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1806.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 447.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -944.6 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 222.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7105.33 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 524.4 MB). Peak memory consumption was 524.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216702.05 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: -773.6 MB). Peak memory consumption was 888.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 36]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 36). Cancelled while BasicCegarLoop was constructing difference of abstraction (102287states) and FLOYD_HOARE automaton (currently 13 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (49052 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 216.6s OverallTime, 15 OverallIterations, 8 TraceHistogramMax, 155.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7909 SDtfs, 48039 SDslu, 2820 SDs, 0 SdLazy, 110144 SolverSat, 14251 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 122.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6446 GetRequests, 6319 SyntacticMatches, 12 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110589occurred in iteration=11, 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: 9.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 134099 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 29.5s InterpolantComputationTime, 21927 NumberOfCodeBlocks, 21927 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 21906 ConstructedInterpolants, 754 QuantifiedInterpolants, 131332226 SizeOfPredicates, 4 NumberOfNonLiveVariables, 7284 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 21 InterpolantComputations, 14 PerfectInterpolantSequences, 24145/29832 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown