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-d380424 [2018-10-24 14:37:35,669 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:37:35,671 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:37:35,683 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:37:35,684 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:37:35,685 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:37:35,686 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:37:35,689 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:37:35,690 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:37:35,691 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:37:35,692 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:37:35,693 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:37:35,694 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:37:35,695 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:37:35,696 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:37:35,697 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:37:35,698 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:37:35,700 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:37:35,702 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:37:35,704 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:37:35,705 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:37:35,707 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:37:35,710 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 14:37:35,719 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 [2018-10-24 14:37:35,735 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:37:35,735 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:37:35,736 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:37:35,736 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:37:35,737 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:37:35,737 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:37:35,737 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:37:35,737 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:37:35,738 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:37:35,738 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:37:35,738 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:37:35,738 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:37:35,738 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:37:35,738 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:37:35,739 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:37:35,739 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:37:35,739 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:37:35,739 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:37:35,739 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:37:35,740 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:37:35,740 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:37:35,740 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:37:35,740 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:37:35,740 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:37:35,741 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:37:35,741 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:37:35,741 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:37:35,741 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:37:35,793 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:37:35,812 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:37:35,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:37:35,818 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:37:35,819 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:37:35,819 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label19_false-unreach-call.c [2018-10-24 14:37:35,893 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a8d16ce2a/4c2fbfc9e448431780b30a1d157f0581/FLAG93b5a2842 [2018-10-24 14:37:36,660 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:37:36,661 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label19_false-unreach-call.c [2018-10-24 14:37:36,683 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a8d16ce2a/4c2fbfc9e448431780b30a1d157f0581/FLAG93b5a2842 [2018-10-24 14:37:36,699 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a8d16ce2a/4c2fbfc9e448431780b30a1d157f0581 [2018-10-24 14:37:36,711 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:37:36,713 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:37:36,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:37:36,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:37:36,719 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:37:36,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:37:36" (1/1) ... [2018-10-24 14:37:36,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:37:36, skipping insertion in model container [2018-10-24 14:37:36,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:37:36" (1/1) ... [2018-10-24 14:37:36,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:37:36,855 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:37:37,875 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:37:37,880 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:37:38,346 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:37:38,377 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:37:38,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:37:38 WrapperNode [2018-10-24 14:37:38,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:37:38,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:37:38,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:37:38,379 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:37:38,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:37:38" (1/1) ... [2018-10-24 14:37:38,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:37:38" (1/1) ... [2018-10-24 14:37:38,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:37:38,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:37:38,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:37:38,908 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:37:38,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:37:38" (1/1) ... [2018-10-24 14:37:38,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:37:38" (1/1) ... [2018-10-24 14:37:38,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:37:38" (1/1) ... [2018-10-24 14:37:38,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:37:38" (1/1) ... [2018-10-24 14:37:39,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:37:38" (1/1) ... [2018-10-24 14:37:39,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:37:38" (1/1) ... [2018-10-24 14:37:39,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:37:38" (1/1) ... [2018-10-24 14:37:39,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:37:39,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:37:39,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:37:39,136 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:37:39,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:37:38" (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 [2018-10-24 14:37:39,207 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:37:39,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:37:39,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:37:46,178 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:37:46,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:37:46 BoogieIcfgContainer [2018-10-24 14:37:46,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:37:46,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:37:46,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:37:46,187 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:37:46,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:37:36" (1/3) ... [2018-10-24 14:37:46,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f70a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:37:46, skipping insertion in model container [2018-10-24 14:37:46,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:37:38" (2/3) ... [2018-10-24 14:37:46,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f70a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:37:46, skipping insertion in model container [2018-10-24 14:37:46,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:37:46" (3/3) ... [2018-10-24 14:37:46,192 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label19_false-unreach-call.c [2018-10-24 14:37:46,202 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:37:46,213 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:37:46,231 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:37:46,278 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:37:46,279 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:37:46,279 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:37:46,279 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:37:46,279 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:37:46,280 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:37:46,280 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:37:46,280 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:37:46,280 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:37:46,315 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-24 14:37:46,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-24 14:37:46,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:37:46,330 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:37:46,333 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:37:46,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:37:46,340 INFO L82 PathProgramCache]: Analyzing trace with hash -974970054, now seen corresponding path program 1 times [2018-10-24 14:37:46,342 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:37:46,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:37:46,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:37:46,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:37:46,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:37:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:37:46,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:37:46,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:37:46,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:37:46,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:37:46,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:37:46,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:37:46,773 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-10-24 14:38:00,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:38:00,485 INFO L93 Difference]: Finished difference Result 3599 states and 7034 transitions. [2018-10-24 14:38:00,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:38:00,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-10-24 14:38:00,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:38:00,541 INFO L225 Difference]: With dead ends: 3599 [2018-10-24 14:38:00,541 INFO L226 Difference]: Without dead ends: 2831 [2018-10-24 14:38:00,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:38:00,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2018-10-24 14:38:00,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2831. [2018-10-24 14:38:00,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2831 states. [2018-10-24 14:38:00,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 4101 transitions. [2018-10-24 14:38:00,736 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 4101 transitions. Word has length 10 [2018-10-24 14:38:00,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:38:00,737 INFO L481 AbstractCegarLoop]: Abstraction has 2831 states and 4101 transitions. [2018-10-24 14:38:00,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:38:00,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 4101 transitions. [2018-10-24 14:38:00,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-24 14:38:00,748 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:38:00,748 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] [2018-10-24 14:38:00,749 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:38:00,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:38:00,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1784029265, now seen corresponding path program 1 times [2018-10-24 14:38:00,749 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:38:00,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:38:00,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:38:00,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:38:00,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:38:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:38:01,472 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 11 [2018-10-24 14:38:01,566 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-24 14:38:01,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:38:01,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:38:01,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:38:01,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:38:01,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:38:01,572 INFO L87 Difference]: Start difference. First operand 2831 states and 4101 transitions. Second operand 5 states. [2018-10-24 14:38:13,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:38:13,903 INFO L93 Difference]: Finished difference Result 8424 states and 12649 transitions. [2018-10-24 14:38:13,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:38:13,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2018-10-24 14:38:13,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:38:13,931 INFO L225 Difference]: With dead ends: 8424 [2018-10-24 14:38:13,931 INFO L226 Difference]: Without dead ends: 5595 [2018-10-24 14:38:13,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:38:13,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2018-10-24 14:38:14,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 5595. [2018-10-24 14:38:14,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5595 states. [2018-10-24 14:38:14,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5595 states to 5595 states and 7136 transitions. [2018-10-24 14:38:14,045 INFO L78 Accepts]: Start accepts. Automaton has 5595 states and 7136 transitions. Word has length 172 [2018-10-24 14:38:14,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:38:14,045 INFO L481 AbstractCegarLoop]: Abstraction has 5595 states and 7136 transitions. [2018-10-24 14:38:14,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:38:14,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5595 states and 7136 transitions. [2018-10-24 14:38:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-24 14:38:14,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:38:14,052 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] [2018-10-24 14:38:14,052 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:38:14,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:38:14,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1485546131, now seen corresponding path program 1 times [2018-10-24 14:38:14,061 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:38:14,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:38:14,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:38:14,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:38:14,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:38:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:38:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-10-24 14:38:14,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:38:14,466 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 [2018-10-24 14:38:14,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:38:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:38:14,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:38:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:38:14,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:38:14,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 14:38:14,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:38:14,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:38:14,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:38:14,701 INFO L87 Difference]: Start difference. First operand 5595 states and 7136 transitions. Second operand 4 states. [2018-10-24 14:38:22,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:38:22,588 INFO L93 Difference]: Finished difference Result 16042 states and 21992 transitions. [2018-10-24 14:38:22,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:38:22,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 261 [2018-10-24 14:38:22,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:38:22,641 INFO L225 Difference]: With dead ends: 16042 [2018-10-24 14:38:22,642 INFO L226 Difference]: Without dead ends: 11140 [2018-10-24 14:38:22,652 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 [2018-10-24 14:38:22,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11140 states. [2018-10-24 14:38:22,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11140 to 7668. [2018-10-24 14:38:22,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7668 states. [2018-10-24 14:38:22,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7668 states to 7668 states and 9572 transitions. [2018-10-24 14:38:22,813 INFO L78 Accepts]: Start accepts. Automaton has 7668 states and 9572 transitions. Word has length 261 [2018-10-24 14:38:22,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:38:22,814 INFO L481 AbstractCegarLoop]: Abstraction has 7668 states and 9572 transitions. [2018-10-24 14:38:22,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:38:22,815 INFO L276 IsEmpty]: Start isEmpty. Operand 7668 states and 9572 transitions. [2018-10-24 14:38:22,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-10-24 14:38:22,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:38:22,820 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] [2018-10-24 14:38:22,820 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:38:22,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:38:22,820 INFO L82 PathProgramCache]: Analyzing trace with hash 21793440, now seen corresponding path program 1 times [2018-10-24 14:38:22,821 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:38:22,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:38:22,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:38:22,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:38:22,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:38:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:38:23,310 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 14:38:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 101 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:38:23,491 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:38:23,491 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 [2018-10-24 14:38:23,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:38:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:38:23,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:38:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-24 14:38:23,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:38:23,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-10-24 14:38:23,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:38:23,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:38:23,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:38:23,844 INFO L87 Difference]: Start difference. First operand 7668 states and 9572 transitions. Second operand 6 states. [2018-10-24 14:38:34,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:38:34,073 INFO L93 Difference]: Finished difference Result 23637 states and 30091 transitions. [2018-10-24 14:38:34,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:38:34,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 284 [2018-10-24 14:38:34,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:38:34,131 INFO L225 Difference]: With dead ends: 23637 [2018-10-24 14:38:34,132 INFO L226 Difference]: Without dead ends: 15278 [2018-10-24 14:38:34,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 283 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:38:34,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15278 states. [2018-10-24 14:38:34,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15278 to 11813. [2018-10-24 14:38:34,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11813 states. [2018-10-24 14:38:34,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11813 states to 11813 states and 13144 transitions. [2018-10-24 14:38:34,341 INFO L78 Accepts]: Start accepts. Automaton has 11813 states and 13144 transitions. Word has length 284 [2018-10-24 14:38:34,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:38:34,342 INFO L481 AbstractCegarLoop]: Abstraction has 11813 states and 13144 transitions. [2018-10-24 14:38:34,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:38:34,342 INFO L276 IsEmpty]: Start isEmpty. Operand 11813 states and 13144 transitions. [2018-10-24 14:38:34,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2018-10-24 14:38:34,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:38:34,374 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] [2018-10-24 14:38:34,374 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:38:34,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:38:34,375 INFO L82 PathProgramCache]: Analyzing trace with hash -843684820, now seen corresponding path program 1 times [2018-10-24 14:38:34,375 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:38:34,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:38:34,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:38:34,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:38:34,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:38:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:38:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2018-10-24 14:38:35,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:38:35,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:38:35,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:38:35,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:38:35,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:38:35,482 INFO L87 Difference]: Start difference. First operand 11813 states and 13144 transitions. Second operand 4 states. [2018-10-24 14:38:41,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:38:41,215 INFO L93 Difference]: Finished difference Result 29858 states and 34514 transitions. [2018-10-24 14:38:41,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:38:41,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 967 [2018-10-24 14:38:41,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:38:41,250 INFO L225 Difference]: With dead ends: 29858 [2018-10-24 14:38:41,251 INFO L226 Difference]: Without dead ends: 18738 [2018-10-24 14:38:41,264 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 [2018-10-24 14:38:41,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18738 states. [2018-10-24 14:38:41,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18738 to 18738. [2018-10-24 14:38:41,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18738 states. [2018-10-24 14:38:41,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18738 states to 18738 states and 21045 transitions. [2018-10-24 14:38:41,486 INFO L78 Accepts]: Start accepts. Automaton has 18738 states and 21045 transitions. Word has length 967 [2018-10-24 14:38:41,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:38:41,488 INFO L481 AbstractCegarLoop]: Abstraction has 18738 states and 21045 transitions. [2018-10-24 14:38:41,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:38:41,488 INFO L276 IsEmpty]: Start isEmpty. Operand 18738 states and 21045 transitions. [2018-10-24 14:38:41,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 982 [2018-10-24 14:38:41,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:38:41,531 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] [2018-10-24 14:38:41,531 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:38:41,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:38:41,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1206651081, now seen corresponding path program 1 times [2018-10-24 14:38:41,532 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:38:41,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:38:41,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:38:41,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:38:41,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:38:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:38:42,906 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2018-10-24 14:38:42,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:38:42,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:38:42,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:38:42,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:38:42,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:38:42,909 INFO L87 Difference]: Start difference. First operand 18738 states and 21045 transitions. Second operand 3 states. [2018-10-24 14:38:46,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:38:46,583 INFO L93 Difference]: Finished difference Result 36783 states and 41396 transitions. [2018-10-24 14:38:46,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:38:46,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 981 [2018-10-24 14:38:46,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:38:46,625 INFO L225 Difference]: With dead ends: 36783 [2018-10-24 14:38:46,626 INFO L226 Difference]: Without dead ends: 18738 [2018-10-24 14:38:46,646 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 [2018-10-24 14:38:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18738 states. [2018-10-24 14:38:46,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18738 to 18738. [2018-10-24 14:38:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18738 states. [2018-10-24 14:38:46,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18738 states to 18738 states and 20560 transitions. [2018-10-24 14:38:46,883 INFO L78 Accepts]: Start accepts. Automaton has 18738 states and 20560 transitions. Word has length 981 [2018-10-24 14:38:46,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:38:46,884 INFO L481 AbstractCegarLoop]: Abstraction has 18738 states and 20560 transitions. [2018-10-24 14:38:46,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:38:46,885 INFO L276 IsEmpty]: Start isEmpty. Operand 18738 states and 20560 transitions. [2018-10-24 14:38:46,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1073 [2018-10-24 14:38:46,899 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:38:46,900 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] [2018-10-24 14:38:46,901 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:38:46,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:38:46,901 INFO L82 PathProgramCache]: Analyzing trace with hash 2028699065, now seen corresponding path program 1 times [2018-10-24 14:38:46,901 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:38:46,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:38:46,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:38:46,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:38:46,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:38:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:38:47,816 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 14:38:48,135 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-10-24 14:38:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 285 proven. 541 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-10-24 14:38:50,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:38:50,235 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 [2018-10-24 14:38:50,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:38:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:38:50,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:38:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2018-10-24 14:38:51,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:38:51,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2018-10-24 14:38:51,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 14:38:51,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 14:38:51,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-24 14:38:51,328 INFO L87 Difference]: Start difference. First operand 18738 states and 20560 transitions. Second operand 10 states. [2018-10-24 14:39:17,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:39:17,309 INFO L93 Difference]: Finished difference Result 90895 states and 101745 transitions. [2018-10-24 14:39:17,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-24 14:39:17,310 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1072 [2018-10-24 14:39:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:39:17,393 INFO L225 Difference]: With dead ends: 90895 [2018-10-24 14:39:17,394 INFO L226 Difference]: Without dead ends: 59023 [2018-10-24 14:39:17,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1106 GetRequests, 1084 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2018-10-24 14:39:17,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59023 states. [2018-10-24 14:39:17,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59023 to 23533. [2018-10-24 14:39:17,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23533 states. [2018-10-24 14:39:17,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23533 states to 23533 states and 24860 transitions. [2018-10-24 14:39:17,921 INFO L78 Accepts]: Start accepts. Automaton has 23533 states and 24860 transitions. Word has length 1072 [2018-10-24 14:39:17,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:39:17,923 INFO L481 AbstractCegarLoop]: Abstraction has 23533 states and 24860 transitions. [2018-10-24 14:39:17,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 14:39:17,923 INFO L276 IsEmpty]: Start isEmpty. Operand 23533 states and 24860 transitions. [2018-10-24 14:39:17,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1240 [2018-10-24 14:39:17,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:39:17,955 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] [2018-10-24 14:39:17,956 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:39:17,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:39:17,956 INFO L82 PathProgramCache]: Analyzing trace with hash 27924076, now seen corresponding path program 1 times [2018-10-24 14:39:17,957 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:39:17,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:39:17,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:17,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:39:17,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:39:18,948 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 14:39:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 993 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2018-10-24 14:39:20,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:39:20,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:39:20,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:39:20,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:39:20,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:39:20,101 INFO L87 Difference]: Start difference. First operand 23533 states and 24860 transitions. Second operand 4 states. [2018-10-24 14:39:26,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:39:26,438 INFO L93 Difference]: Finished difference Result 85756 states and 90889 transitions. [2018-10-24 14:39:26,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:39:26,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1239 [2018-10-24 14:39:26,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:39:26,531 INFO L225 Difference]: With dead ends: 85756 [2018-10-24 14:39:26,532 INFO L226 Difference]: Without dead ends: 61532 [2018-10-24 14:39:26,568 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 [2018-10-24 14:39:26,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61532 states. [2018-10-24 14:39:27,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61532 to 59459. [2018-10-24 14:39:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59459 states. [2018-10-24 14:39:27,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59459 states to 59459 states and 62175 transitions. [2018-10-24 14:39:27,340 INFO L78 Accepts]: Start accepts. Automaton has 59459 states and 62175 transitions. Word has length 1239 [2018-10-24 14:39:27,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:39:27,341 INFO L481 AbstractCegarLoop]: Abstraction has 59459 states and 62175 transitions. [2018-10-24 14:39:27,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:39:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand 59459 states and 62175 transitions. [2018-10-24 14:39:27,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1373 [2018-10-24 14:39:27,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:39:27,392 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] [2018-10-24 14:39:27,392 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:39:27,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:39:27,393 INFO L82 PathProgramCache]: Analyzing trace with hash 565562273, now seen corresponding path program 1 times [2018-10-24 14:39:27,393 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:39:27,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:39:27,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:27,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:39:27,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:39:29,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1811 backedges. 1331 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2018-10-24 14:39:29,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:39:29,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:39:29,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:39:29,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:39:29,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:39:29,138 INFO L87 Difference]: Start difference. First operand 59459 states and 62175 transitions. Second operand 4 states. [2018-10-24 14:39:34,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:39:34,910 INFO L93 Difference]: Finished difference Result 147245 states and 154445 transitions. [2018-10-24 14:39:34,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:39:34,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1372 [2018-10-24 14:39:34,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:39:35,046 INFO L225 Difference]: With dead ends: 147245 [2018-10-24 14:39:35,047 INFO L226 Difference]: Without dead ends: 87095 [2018-10-24 14:39:35,089 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 [2018-10-24 14:39:35,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87095 states. [2018-10-24 14:39:35,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87095 to 85713. [2018-10-24 14:39:35,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85713 states. [2018-10-24 14:39:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85713 states to 85713 states and 89307 transitions. [2018-10-24 14:39:35,907 INFO L78 Accepts]: Start accepts. Automaton has 85713 states and 89307 transitions. Word has length 1372 [2018-10-24 14:39:35,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:39:35,909 INFO L481 AbstractCegarLoop]: Abstraction has 85713 states and 89307 transitions. [2018-10-24 14:39:35,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:39:35,909 INFO L276 IsEmpty]: Start isEmpty. Operand 85713 states and 89307 transitions. [2018-10-24 14:39:35,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1446 [2018-10-24 14:39:35,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:39:35,950 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] [2018-10-24 14:39:35,950 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:39:35,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:39:35,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1984408622, now seen corresponding path program 1 times [2018-10-24 14:39:35,951 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:39:35,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:39:35,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:35,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:39:35,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:39:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2183 backedges. 1485 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2018-10-24 14:39:37,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:39:37,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:39:37,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:39:37,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:39:37,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:39:37,650 INFO L87 Difference]: Start difference. First operand 85713 states and 89307 transitions. Second operand 4 states. [2018-10-24 14:39:42,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:39:42,865 INFO L93 Difference]: Finished difference Result 174188 states and 181591 transitions. [2018-10-24 14:39:42,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:39:42,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1445 [2018-10-24 14:39:42,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:39:42,991 INFO L225 Difference]: With dead ends: 174188 [2018-10-24 14:39:42,991 INFO L226 Difference]: Without dead ends: 89168 [2018-10-24 14:39:43,044 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 [2018-10-24 14:39:43,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89168 states. [2018-10-24 14:39:43,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89168 to 88477. [2018-10-24 14:39:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88477 states. [2018-10-24 14:39:43,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88477 states to 88477 states and 91598 transitions. [2018-10-24 14:39:43,786 INFO L78 Accepts]: Start accepts. Automaton has 88477 states and 91598 transitions. Word has length 1445 [2018-10-24 14:39:43,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:39:43,787 INFO L481 AbstractCegarLoop]: Abstraction has 88477 states and 91598 transitions. [2018-10-24 14:39:43,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:39:43,788 INFO L276 IsEmpty]: Start isEmpty. Operand 88477 states and 91598 transitions. [2018-10-24 14:39:43,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1456 [2018-10-24 14:39:43,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:39:43,819 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] [2018-10-24 14:39:43,820 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:39:43,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:39:43,820 INFO L82 PathProgramCache]: Analyzing trace with hash 2175790, now seen corresponding path program 1 times [2018-10-24 14:39:43,820 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:39:43,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:39:43,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:43,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:39:43,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:39:45,364 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-10-24 14:39:45,752 WARN L179 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-10-24 14:39:45,964 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-24 14:39:49,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 770 proven. 1265 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-10-24 14:39:49,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:39:49,711 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 [2018-10-24 14:39:49,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:39:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:39:50,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:39:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 1326 proven. 0 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2018-10-24 14:39:51,925 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:39:51,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-10-24 14:39:51,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 14:39:51,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 14:39:51,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-10-24 14:39:51,928 INFO L87 Difference]: Start difference. First operand 88477 states and 91598 transitions. Second operand 12 states. [2018-10-24 14:40:10,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:40:10,605 INFO L93 Difference]: Finished difference Result 240254 states and 249302 transitions. [2018-10-24 14:40:10,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-24 14:40:10,606 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1455 [2018-10-24 14:40:10,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:40:10,756 INFO L225 Difference]: With dead ends: 240254 [2018-10-24 14:40:10,756 INFO L226 Difference]: Without dead ends: 152470 [2018-10-24 14:40:10,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1496 GetRequests, 1467 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=228, Invalid=584, Unknown=0, NotChecked=0, Total=812 [2018-10-24 14:40:10,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152470 states. [2018-10-24 14:40:12,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152470 to 110589. [2018-10-24 14:40:12,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110589 states. [2018-10-24 14:40:12,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110589 states to 110589 states and 114231 transitions. [2018-10-24 14:40:12,307 INFO L78 Accepts]: Start accepts. Automaton has 110589 states and 114231 transitions. Word has length 1455 [2018-10-24 14:40:12,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:40:12,308 INFO L481 AbstractCegarLoop]: Abstraction has 110589 states and 114231 transitions. [2018-10-24 14:40:12,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 14:40:12,308 INFO L276 IsEmpty]: Start isEmpty. Operand 110589 states and 114231 transitions. [2018-10-24 14:40:12,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1475 [2018-10-24 14:40:12,332 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:40:12,333 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] [2018-10-24 14:40:12,333 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:40:12,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:40:12,334 INFO L82 PathProgramCache]: Analyzing trace with hash 638336125, now seen corresponding path program 1 times [2018-10-24 14:40:12,334 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:40:12,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:40:12,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:12,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:12,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:13,635 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-10-24 14:40:13,885 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-10-24 14:40:17,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 579 proven. 1551 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2018-10-24 14:40:17,671 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:40:17,671 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 [2018-10-24 14:40:17,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:17,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:40:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 1317 proven. 0 refuted. 0 times theorem prover too weak. 1043 trivial. 0 not checked. [2018-10-24 14:40:19,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:40:19,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-10-24 14:40:19,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 14:40:19,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 14:40:19,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-24 14:40:19,233 INFO L87 Difference]: Start difference. First operand 110589 states and 114231 transitions. Second operand 12 states. [2018-10-24 14:40:36,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:40:36,440 INFO L93 Difference]: Finished difference Result 258526 states and 266975 transitions. [2018-10-24 14:40:36,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-24 14:40:36,440 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1474 [2018-10-24 14:40:36,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:40:36,931 INFO L225 Difference]: With dead ends: 258526 [2018-10-24 14:40:36,931 INFO L226 Difference]: Without dead ends: 148630 [2018-10-24 14:40:36,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1515 GetRequests, 1486 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2018-10-24 14:40:37,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148630 states. [2018-10-24 14:40:38,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148630 to 105058. [2018-10-24 14:40:38,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105058 states. [2018-10-24 14:40:38,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105058 states to 105058 states and 107496 transitions. [2018-10-24 14:40:38,121 INFO L78 Accepts]: Start accepts. Automaton has 105058 states and 107496 transitions. Word has length 1474 [2018-10-24 14:40:38,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:40:38,123 INFO L481 AbstractCegarLoop]: Abstraction has 105058 states and 107496 transitions. [2018-10-24 14:40:38,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 14:40:38,123 INFO L276 IsEmpty]: Start isEmpty. Operand 105058 states and 107496 transitions. [2018-10-24 14:40:38,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1588 [2018-10-24 14:40:38,172 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:40:38,173 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] [2018-10-24 14:40:38,173 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:40:38,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:40:38,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1777229237, now seen corresponding path program 1 times [2018-10-24 14:40:38,174 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:40:38,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:40:38,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:38,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:38,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2519 backedges. 1988 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-10-24 14:40:40,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:40:40,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:40:40,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:40:40,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:40:40,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:40:40,359 INFO L87 Difference]: Start difference. First operand 105058 states and 107496 transitions. Second operand 4 states. [2018-10-24 14:40:45,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:40:45,407 INFO L93 Difference]: Finished difference Result 209418 states and 214311 transitions. [2018-10-24 14:40:45,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:40:45,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1587 [2018-10-24 14:40:45,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:40:45,516 INFO L225 Difference]: With dead ends: 209418 [2018-10-24 14:40:45,516 INFO L226 Difference]: Without dead ends: 103669 [2018-10-24 14:40:45,569 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 [2018-10-24 14:40:45,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103669 states. [2018-10-24 14:40:46,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103669 to 101596. [2018-10-24 14:40:46,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101596 states. [2018-10-24 14:40:46,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101596 states to 101596 states and 103708 transitions. [2018-10-24 14:40:46,521 INFO L78 Accepts]: Start accepts. Automaton has 101596 states and 103708 transitions. Word has length 1587 [2018-10-24 14:40:46,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:40:46,522 INFO L481 AbstractCegarLoop]: Abstraction has 101596 states and 103708 transitions. [2018-10-24 14:40:46,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:40:46,523 INFO L276 IsEmpty]: Start isEmpty. Operand 101596 states and 103708 transitions. [2018-10-24 14:40:46,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1623 [2018-10-24 14:40:46,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:40:46,571 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] [2018-10-24 14:40:46,571 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:40:46,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:40:46,572 INFO L82 PathProgramCache]: Analyzing trace with hash -115192492, now seen corresponding path program 1 times [2018-10-24 14:40:46,572 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:40:46,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:40:46,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:46,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:46,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:48,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2563 backedges. 1865 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2018-10-24 14:40:48,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:40:48,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:40:48,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:40:48,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:40:48,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:40:48,637 INFO L87 Difference]: Start difference. First operand 101596 states and 103708 transitions. Second operand 3 states. [2018-10-24 14:40:51,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:40:51,758 INFO L93 Difference]: Finished difference Result 203190 states and 207417 transitions. [2018-10-24 14:40:51,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:40:51,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1622 [2018-10-24 14:40:51,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:40:51,877 INFO L225 Difference]: With dead ends: 203190 [2018-10-24 14:40:51,877 INFO L226 Difference]: Without dead ends: 102287 [2018-10-24 14:40:51,932 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:40:52,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102287 states. [2018-10-24 14:40:52,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102287 to 102287. [2018-10-24 14:40:52,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102287 states. [2018-10-24 14:40:52,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102287 states to 102287 states and 104398 transitions. [2018-10-24 14:40:52,813 INFO L78 Accepts]: Start accepts. Automaton has 102287 states and 104398 transitions. Word has length 1622 [2018-10-24 14:40:52,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:40:52,814 INFO L481 AbstractCegarLoop]: Abstraction has 102287 states and 104398 transitions. [2018-10-24 14:40:52,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:40:52,814 INFO L276 IsEmpty]: Start isEmpty. Operand 102287 states and 104398 transitions. [2018-10-24 14:40:52,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1721 [2018-10-24 14:40:52,854 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:40:52,855 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] [2018-10-24 14:40:52,855 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:40:52,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:40:52,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1382658394, now seen corresponding path program 1 times [2018-10-24 14:40:52,856 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:40:52,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:40:52,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:52,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:52,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:55,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3219 backedges. 1978 proven. 663 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-10-24 14:40:55,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:40:55,973 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 [2018-10-24 14:40:55,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:56,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:40:56,995 WARN L179 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 23 [2018-10-24 14:40:57,720 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-24 14:40:58,486 WARN L179 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 615 DAG size of output: 29 [2018-10-24 14:41:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3219 backedges. 982 proven. 1659 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-10-24 14:41:09,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:41:09,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-10-24 14:41:09,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 14:41:09,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 14:41:09,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-10-24 14:41:09,694 INFO L87 Difference]: Start difference. First operand 102287 states and 104398 transitions. Second operand 11 states. Received shutdown request... [2018-10-24 14:41:25,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 14:41:25,247 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:41:25,253 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:41:25,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:41:25 BoogieIcfgContainer [2018-10-24 14:41:25,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:41:25,255 INFO L168 Benchmark]: Toolchain (without parser) took 228543.08 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -503.1 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 14:41:25,256 INFO L168 Benchmark]: CDTParser took 0.26 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. [2018-10-24 14:41:25,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1663.81 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. [2018-10-24 14:41:25,257 INFO L168 Benchmark]: Boogie Procedure Inliner took 528.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -957.4 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:41:25,260 INFO L168 Benchmark]: Boogie Preprocessor took 227.73 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: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2018-10-24 14:41:25,261 INFO L168 Benchmark]: RCFGBuilder took 7044.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 538.9 MB). Peak memory consumption was 538.9 MB. Max. memory is 7.1 GB. [2018-10-24 14:41:25,261 INFO L168 Benchmark]: TraceAbstraction took 219070.78 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 1.9 GB in the end (delta: -260.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 14:41:25,268 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 1663.81 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 528.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -957.4 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 227.73 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: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7044.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 538.9 MB). Peak memory consumption was 538.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219070.78 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 1.9 GB in the end (delta: -260.8 MB). Peak memory consumption was 1.4 GB. 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 14 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (69490 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 218.9s OverallTime, 15 OverallIterations, 8 TraceHistogramMax, 158.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7919 SDtfs, 48693 SDslu, 2828 SDs, 0 SdLazy, 111362 SolverSat, 14330 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 123.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6446 GetRequests, 6319 SyntacticMatches, 12 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 8.1s 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: 8.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 134099 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 29.9s 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