java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -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_label35_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:38:15,428 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:38:15,430 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:38:15,442 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:38:15,442 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:38:15,443 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:38:15,444 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:38:15,446 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:38:15,448 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:38:15,449 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:38:15,452 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:38:15,452 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:38:15,453 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:38:15,454 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:38:15,455 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:38:15,459 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:38:15,460 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:38:15,469 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:38:15,471 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:38:15,475 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:38:15,476 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:38:15,479 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:38:15,483 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:38:15,483 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:38:15,484 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:38:15,485 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:38:15,486 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:38:15,487 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:38:15,489 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:38:15,492 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:38:15,492 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:38:15,495 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 19:38:15,499 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 19:38:15,529 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:38:15,529 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:38:15,530 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:38:15,531 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:38:15,532 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:38:15,533 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:38:15,533 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:38:15,534 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:38:15,534 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:38:15,534 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:38:15,534 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:38:15,534 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:38:15,534 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:38:15,534 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:38:15,535 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:38:15,535 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:38:15,535 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:38:15,535 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:38:15,535 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:38:15,536 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:38:15,537 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:38:15,537 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:38:15,537 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:38:15,538 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:38:15,538 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:38:15,538 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:38:15,538 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:38:15,538 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:38:15,607 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:38:15,622 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:38:15,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:38:15,628 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:38:15,628 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:38:15,629 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label35_false-unreach-call.c [2018-11-06 19:38:15,688 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40321791c/cd08257cd9e4471dbd79499cc55bd7bd/FLAGbfd7eef2e [2018-11-06 19:38:16,454 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:38:16,455 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label35_false-unreach-call.c [2018-11-06 19:38:16,485 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40321791c/cd08257cd9e4471dbd79499cc55bd7bd/FLAGbfd7eef2e [2018-11-06 19:38:16,501 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40321791c/cd08257cd9e4471dbd79499cc55bd7bd [2018-11-06 19:38:16,513 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:38:16,514 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:38:16,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:38:16,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:38:16,519 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:38:16,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:38:16" (1/1) ... [2018-11-06 19:38:16,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64723766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:38:16, skipping insertion in model container [2018-11-06 19:38:16,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:38:16" (1/1) ... [2018-11-06 19:38:16,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:38:16,685 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:38:17,758 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:38:17,765 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:38:18,194 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:38:18,226 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:38:18,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:38:18 WrapperNode [2018-11-06 19:38:18,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:38:18,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:38:18,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:38:18,228 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:38:18,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:38:18" (1/1) ... [2018-11-06 19:38:18,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:38:18" (1/1) ... [2018-11-06 19:38:18,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:38:18,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:38:18,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:38:18,690 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:38:18,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:38:18" (1/1) ... [2018-11-06 19:38:18,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:38:18" (1/1) ... [2018-11-06 19:38:18,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:38:18" (1/1) ... [2018-11-06 19:38:18,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:38:18" (1/1) ... [2018-11-06 19:38:18,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:38:18" (1/1) ... [2018-11-06 19:38:18,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:38:18" (1/1) ... [2018-11-06 19:38:18,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:38:18" (1/1) ... [2018-11-06 19:38:18,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:38:18,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:38:18,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:38:18,927 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:38:18,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:38:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:38:18,999 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:38:18,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:38:19,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:38:28,384 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:38:28,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:38:28 BoogieIcfgContainer [2018-11-06 19:38:28,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:38:28,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:38:28,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:38:28,390 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:38:28,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:38:16" (1/3) ... [2018-11-06 19:38:28,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db3a037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:38:28, skipping insertion in model container [2018-11-06 19:38:28,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:38:18" (2/3) ... [2018-11-06 19:38:28,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db3a037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:38:28, skipping insertion in model container [2018-11-06 19:38:28,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:38:28" (3/3) ... [2018-11-06 19:38:28,396 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label35_false-unreach-call.c [2018-11-06 19:38:28,407 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:38:28,417 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:38:28,436 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:38:28,486 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:38:28,487 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:38:28,487 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:38:28,487 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:38:28,487 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:38:28,487 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:38:28,487 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:38:28,488 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:38:28,488 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:38:28,523 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-11-06 19:38:28,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-06 19:38:28,535 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:38:28,536 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:38:28,542 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:38:28,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:38:28,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1961166346, now seen corresponding path program 1 times [2018-11-06 19:38:28,552 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:38:28,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:38:28,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:28,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:28,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:28,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:38:28,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:38:28,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:38:28,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:38:28,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:38:28,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:38:28,878 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-11-06 19:38:40,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:38:40,649 INFO L93 Difference]: Finished difference Result 2918 states and 5666 transitions. [2018-11-06 19:38:40,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:38:40,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-11-06 19:38:40,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:38:40,697 INFO L225 Difference]: With dead ends: 2918 [2018-11-06 19:38:40,698 INFO L226 Difference]: Without dead ends: 2153 [2018-11-06 19:38:40,704 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:38:40,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2018-11-06 19:38:40,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2018-11-06 19:38:40,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2018-11-06 19:38:40,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3619 transitions. [2018-11-06 19:38:40,853 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3619 transitions. Word has length 15 [2018-11-06 19:38:40,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:38:40,853 INFO L480 AbstractCegarLoop]: Abstraction has 2153 states and 3619 transitions. [2018-11-06 19:38:40,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:38:40,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3619 transitions. [2018-11-06 19:38:40,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-11-06 19:38:40,859 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:38:40,860 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:38:40,860 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:38:40,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:38:40,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1821587577, now seen corresponding path program 1 times [2018-11-06 19:38:40,861 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:38:40,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:38:40,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:40,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:40,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:41,101 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:38:41,102 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:38:41,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:38:41,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:38:41,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:38:41,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:38:41,105 INFO L87 Difference]: Start difference. First operand 2153 states and 3619 transitions. Second operand 4 states. [2018-11-06 19:38:48,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:38:48,672 INFO L93 Difference]: Finished difference Result 6377 states and 10776 transitions. [2018-11-06 19:38:48,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:38:48,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2018-11-06 19:38:48,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:38:48,698 INFO L225 Difference]: With dead ends: 6377 [2018-11-06 19:38:48,698 INFO L226 Difference]: Without dead ends: 4226 [2018-11-06 19:38:48,703 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:38:48,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2018-11-06 19:38:48,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4226. [2018-11-06 19:38:48,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4226 states. [2018-11-06 19:38:48,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 6043 transitions. [2018-11-06 19:38:48,788 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 6043 transitions. Word has length 81 [2018-11-06 19:38:48,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:38:48,789 INFO L480 AbstractCegarLoop]: Abstraction has 4226 states and 6043 transitions. [2018-11-06 19:38:48,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:38:48,789 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 6043 transitions. [2018-11-06 19:38:48,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-11-06 19:38:48,797 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:38:48,798 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:38:48,798 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:38:48,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:38:48,798 INFO L82 PathProgramCache]: Analyzing trace with hash 60232242, now seen corresponding path program 1 times [2018-11-06 19:38:48,802 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:38:48,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:38:48,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:48,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:48,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-06 19:38:49,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:38:49,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:38:49,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:38:49,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:38:49,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:38:49,605 INFO L87 Difference]: Start difference. First operand 4226 states and 6043 transitions. Second operand 5 states. [2018-11-06 19:38:57,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:38:57,869 INFO L93 Difference]: Finished difference Result 13287 states and 18113 transitions. [2018-11-06 19:38:57,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:38:57,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2018-11-06 19:38:57,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:38:57,916 INFO L225 Difference]: With dead ends: 13287 [2018-11-06 19:38:57,916 INFO L226 Difference]: Without dead ends: 9063 [2018-11-06 19:38:57,924 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:38:57,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9063 states. [2018-11-06 19:38:58,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9063 to 8372. [2018-11-06 19:38:58,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8372 states. [2018-11-06 19:38:58,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8372 states to 8372 states and 10467 transitions. [2018-11-06 19:38:58,121 INFO L78 Accepts]: Start accepts. Automaton has 8372 states and 10467 transitions. Word has length 200 [2018-11-06 19:38:58,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:38:58,122 INFO L480 AbstractCegarLoop]: Abstraction has 8372 states and 10467 transitions. [2018-11-06 19:38:58,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:38:58,123 INFO L276 IsEmpty]: Start isEmpty. Operand 8372 states and 10467 transitions. [2018-11-06 19:38:58,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-11-06 19:38:58,136 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:38:58,136 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:38:58,137 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:38:58,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:38:58,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1590270905, now seen corresponding path program 1 times [2018-11-06 19:38:58,138 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:38:58,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:38:58,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:58,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:58,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:58,841 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 256 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-06 19:38:58,841 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:38:58,842 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:38:58,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:58,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:38:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-11-06 19:38:59,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:38:59,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-11-06 19:38:59,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:38:59,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:38:59,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:38:59,206 INFO L87 Difference]: Start difference. First operand 8372 states and 10467 transitions. Second operand 6 states. [2018-11-06 19:39:10,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:39:10,519 INFO L93 Difference]: Finished difference Result 26432 states and 32780 transitions. [2018-11-06 19:39:10,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:39:10,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 383 [2018-11-06 19:39:10,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:39:10,587 INFO L225 Difference]: With dead ends: 26432 [2018-11-06 19:39:10,587 INFO L226 Difference]: Without dead ends: 15986 [2018-11-06 19:39:10,603 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 383 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:39:10,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15986 states. [2018-11-06 19:39:10,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15986 to 11810. [2018-11-06 19:39:10,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11810 states. [2018-11-06 19:39:10,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11810 states to 11810 states and 13599 transitions. [2018-11-06 19:39:10,870 INFO L78 Accepts]: Start accepts. Automaton has 11810 states and 13599 transitions. Word has length 383 [2018-11-06 19:39:10,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:39:10,871 INFO L480 AbstractCegarLoop]: Abstraction has 11810 states and 13599 transitions. [2018-11-06 19:39:10,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:39:10,871 INFO L276 IsEmpty]: Start isEmpty. Operand 11810 states and 13599 transitions. [2018-11-06 19:39:10,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-11-06 19:39:10,879 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:10,880 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:39:10,880 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:10,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:10,881 INFO L82 PathProgramCache]: Analyzing trace with hash -363516937, now seen corresponding path program 1 times [2018-11-06 19:39:10,881 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:10,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:10,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:10,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:10,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-11-06 19:39:11,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:39:11,968 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:39:11,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:12,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:39:12,332 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-06 19:39:12,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:39:12,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-11-06 19:39:12,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:39:12,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:39:12,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:39:12,367 INFO L87 Difference]: Start difference. First operand 11810 states and 13599 transitions. Second operand 5 states. [2018-11-06 19:39:12,556 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-06 19:39:22,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:39:22,295 INFO L93 Difference]: Finished difference Result 47806 states and 56547 transitions. [2018-11-06 19:39:22,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:39:22,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 388 [2018-11-06 19:39:22,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:39:22,377 INFO L225 Difference]: With dead ends: 47806 [2018-11-06 19:39:22,377 INFO L226 Difference]: Without dead ends: 35998 [2018-11-06 19:39:22,397 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 390 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:39:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35998 states. [2018-11-06 19:39:22,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35998 to 35998. [2018-11-06 19:39:22,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35998 states. [2018-11-06 19:39:22,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35998 states to 35998 states and 41551 transitions. [2018-11-06 19:39:22,927 INFO L78 Accepts]: Start accepts. Automaton has 35998 states and 41551 transitions. Word has length 388 [2018-11-06 19:39:22,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:39:22,928 INFO L480 AbstractCegarLoop]: Abstraction has 35998 states and 41551 transitions. [2018-11-06 19:39:22,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:39:22,929 INFO L276 IsEmpty]: Start isEmpty. Operand 35998 states and 41551 transitions. [2018-11-06 19:39:22,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1010 [2018-11-06 19:39:22,962 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:22,963 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:39:22,964 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:22,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:22,964 INFO L82 PathProgramCache]: Analyzing trace with hash 141044868, now seen corresponding path program 1 times [2018-11-06 19:39:22,965 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:22,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:22,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:22,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:22,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:25,244 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 51 proven. 6 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2018-11-06 19:39:25,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:39:25,245 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:39:25,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:25,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:39:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2018-11-06 19:39:26,612 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:39:26,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-11-06 19:39:26,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:39:26,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:39:26,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:39:26,615 INFO L87 Difference]: Start difference. First operand 35998 states and 41551 transitions. Second operand 5 states. [2018-11-06 19:39:31,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:39:31,587 INFO L93 Difference]: Finished difference Result 85123 states and 98829 transitions. [2018-11-06 19:39:31,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:39:31,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1009 [2018-11-06 19:39:31,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:39:31,699 INFO L225 Difference]: With dead ends: 85123 [2018-11-06 19:39:31,699 INFO L226 Difference]: Without dead ends: 49818 [2018-11-06 19:39:31,752 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1011 GetRequests, 1008 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:39:31,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49818 states. [2018-11-06 19:39:32,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49818 to 49818. [2018-11-06 19:39:32,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49818 states. [2018-11-06 19:39:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49818 states to 49818 states and 55582 transitions. [2018-11-06 19:39:32,908 INFO L78 Accepts]: Start accepts. Automaton has 49818 states and 55582 transitions. Word has length 1009 [2018-11-06 19:39:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:39:32,910 INFO L480 AbstractCegarLoop]: Abstraction has 49818 states and 55582 transitions. [2018-11-06 19:39:32,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:39:32,910 INFO L276 IsEmpty]: Start isEmpty. Operand 49818 states and 55582 transitions. [2018-11-06 19:39:32,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2018-11-06 19:39:32,966 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:32,967 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:39:32,967 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:32,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:32,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1721176543, now seen corresponding path program 1 times [2018-11-06 19:39:32,971 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:32,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:32,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:32,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:32,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2018-11-06 19:39:34,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:39:34,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:39:34,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:39:34,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:39:34,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:39:34,345 INFO L87 Difference]: Start difference. First operand 49818 states and 55582 transitions. Second operand 3 states. [2018-11-06 19:39:37,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:39:37,792 INFO L93 Difference]: Finished difference Result 98943 states and 110470 transitions. [2018-11-06 19:39:37,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:39:37,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1023 [2018-11-06 19:39:37,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:39:37,867 INFO L225 Difference]: With dead ends: 98943 [2018-11-06 19:39:37,868 INFO L226 Difference]: Without dead ends: 49818 [2018-11-06 19:39:37,906 INFO L604 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 [2018-11-06 19:39:37,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49818 states. [2018-11-06 19:39:38,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49818 to 49818. [2018-11-06 19:39:38,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49818 states. [2018-11-06 19:39:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49818 states to 49818 states and 54152 transitions. [2018-11-06 19:39:39,244 INFO L78 Accepts]: Start accepts. Automaton has 49818 states and 54152 transitions. Word has length 1023 [2018-11-06 19:39:39,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:39:39,247 INFO L480 AbstractCegarLoop]: Abstraction has 49818 states and 54152 transitions. [2018-11-06 19:39:39,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:39:39,247 INFO L276 IsEmpty]: Start isEmpty. Operand 49818 states and 54152 transitions. [2018-11-06 19:39:39,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1196 [2018-11-06 19:39:39,283 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:39,284 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:39:39,284 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:39,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:39,285 INFO L82 PathProgramCache]: Analyzing trace with hash 2056092631, now seen corresponding path program 1 times [2018-11-06 19:39:39,286 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:39,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:39,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:39,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:39,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:40,383 WARN L179 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-11-06 19:39:41,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 862 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2018-11-06 19:39:41,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:39:41,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:39:41,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:39:41,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:39:41,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:39:41,230 INFO L87 Difference]: Start difference. First operand 49818 states and 54152 transitions. Second operand 4 states. [2018-11-06 19:39:47,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:39:47,672 INFO L93 Difference]: Finished difference Result 130729 states and 142007 transitions. [2018-11-06 19:39:47,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:39:47,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1195 [2018-11-06 19:39:47,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:39:47,779 INFO L225 Difference]: With dead ends: 130729 [2018-11-06 19:39:47,779 INFO L226 Difference]: Without dead ends: 81604 [2018-11-06 19:39:47,819 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:39:47,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81604 states. [2018-11-06 19:39:48,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81604 to 78840. [2018-11-06 19:39:48,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78840 states. [2018-11-06 19:39:48,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78840 states to 78840 states and 84682 transitions. [2018-11-06 19:39:48,737 INFO L78 Accepts]: Start accepts. Automaton has 78840 states and 84682 transitions. Word has length 1195 [2018-11-06 19:39:48,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:39:48,739 INFO L480 AbstractCegarLoop]: Abstraction has 78840 states and 84682 transitions. [2018-11-06 19:39:48,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:39:48,740 INFO L276 IsEmpty]: Start isEmpty. Operand 78840 states and 84682 transitions. [2018-11-06 19:39:48,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1215 [2018-11-06 19:39:48,784 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:48,785 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:39:48,785 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:48,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:48,787 INFO L82 PathProgramCache]: Analyzing trace with hash 560112346, now seen corresponding path program 1 times [2018-11-06 19:39:48,788 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:48,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:48,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:48,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:48,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:49,677 WARN L179 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-11-06 19:39:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 948 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2018-11-06 19:39:50,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:39:50,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:39:50,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:39:50,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:39:50,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:39:50,874 INFO L87 Difference]: Start difference. First operand 78840 states and 84682 transitions. Second operand 4 states. [2018-11-06 19:39:56,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:39:56,093 INFO L93 Difference]: Finished difference Result 158368 states and 170085 transitions. [2018-11-06 19:39:56,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:39:56,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1214 [2018-11-06 19:39:56,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:39:56,204 INFO L225 Difference]: With dead ends: 158368 [2018-11-06 19:39:56,205 INFO L226 Difference]: Without dead ends: 80221 [2018-11-06 19:39:56,263 INFO L604 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 [2018-11-06 19:39:56,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80221 states. [2018-11-06 19:39:56,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80221 to 79530. [2018-11-06 19:39:56,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79530 states. [2018-11-06 19:39:57,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79530 states to 79530 states and 84109 transitions. [2018-11-06 19:39:57,025 INFO L78 Accepts]: Start accepts. Automaton has 79530 states and 84109 transitions. Word has length 1214 [2018-11-06 19:39:57,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:39:57,026 INFO L480 AbstractCegarLoop]: Abstraction has 79530 states and 84109 transitions. [2018-11-06 19:39:57,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:39:57,026 INFO L276 IsEmpty]: Start isEmpty. Operand 79530 states and 84109 transitions. [2018-11-06 19:39:57,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1215 [2018-11-06 19:39:57,058 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:57,059 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:39:57,060 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:57,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:57,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2133527744, now seen corresponding path program 1 times [2018-11-06 19:39:57,060 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:57,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:57,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:57,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:57,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:58,611 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-06 19:39:58,925 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-11-06 19:40:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 447 proven. 678 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-11-06 19:40:01,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:40:01,557 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:40:01,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:40:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:40:01,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:40:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 637 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2018-11-06 19:40:03,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:40:03,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2018-11-06 19:40:03,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-06 19:40:03,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-06 19:40:03,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:40:03,033 INFO L87 Difference]: Start difference. First operand 79530 states and 84109 transitions. Second operand 10 states. [2018-11-06 19:40:26,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:40:26,387 INFO L93 Difference]: Finished difference Result 309776 states and 329297 transitions. [2018-11-06 19:40:26,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-06 19:40:26,388 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1214 [2018-11-06 19:40:26,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:40:26,596 INFO L225 Difference]: With dead ends: 309776 [2018-11-06 19:40:26,596 INFO L226 Difference]: Without dead ends: 187935 [2018-11-06 19:40:26,652 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1248 GetRequests, 1226 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2018-11-06 19:40:26,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187935 states. [2018-11-06 19:40:27,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187935 to 78109. [2018-11-06 19:40:27,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78109 states. [2018-11-06 19:40:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78109 states to 78109 states and 80857 transitions. [2018-11-06 19:40:27,958 INFO L78 Accepts]: Start accepts. Automaton has 78109 states and 80857 transitions. Word has length 1214 [2018-11-06 19:40:27,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:40:27,959 INFO L480 AbstractCegarLoop]: Abstraction has 78109 states and 80857 transitions. [2018-11-06 19:40:27,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-06 19:40:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 78109 states and 80857 transitions. [2018-11-06 19:40:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1477 [2018-11-06 19:40:28,008 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:40:28,009 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-11-06 19:40:28,010 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:40:28,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:40:28,013 INFO L82 PathProgramCache]: Analyzing trace with hash 579603313, now seen corresponding path program 1 times [2018-11-06 19:40:28,013 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:40:28,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:40:28,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:40:28,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:40:28,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:40:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:40:30,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2036 backedges. 1348 proven. 0 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2018-11-06 19:40:30,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:40:30,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:40:30,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:40:30,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:40:30,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:40:30,787 INFO L87 Difference]: Start difference. First operand 78109 states and 80857 transitions. Second operand 4 states. [2018-11-06 19:40:35,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:40:35,725 INFO L93 Difference]: Finished difference Result 165888 states and 172052 transitions. [2018-11-06 19:40:35,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:40:35,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1476 [2018-11-06 19:40:35,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:40:35,818 INFO L225 Difference]: With dead ends: 165888 [2018-11-06 19:40:35,818 INFO L226 Difference]: Without dead ends: 88472 [2018-11-06 19:40:35,864 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:40:35,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88472 states. [2018-11-06 19:40:36,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88472 to 87781. [2018-11-06 19:40:36,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87781 states. [2018-11-06 19:40:36,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87781 states to 87781 states and 90700 transitions. [2018-11-06 19:40:36,589 INFO L78 Accepts]: Start accepts. Automaton has 87781 states and 90700 transitions. Word has length 1476 [2018-11-06 19:40:36,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:40:36,590 INFO L480 AbstractCegarLoop]: Abstraction has 87781 states and 90700 transitions. [2018-11-06 19:40:36,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:40:36,590 INFO L276 IsEmpty]: Start isEmpty. Operand 87781 states and 90700 transitions. [2018-11-06 19:40:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1576 [2018-11-06 19:40:36,629 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:40:36,630 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:40:36,630 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:40:36,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:40:36,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1856553544, now seen corresponding path program 1 times [2018-11-06 19:40:36,631 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:40:36,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:40:36,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:40:36,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:40:36,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:40:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:40:38,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2470 backedges. 1781 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2018-11-06 19:40:38,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:40:38,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 19:40:38,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:40:38,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:40:38,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:40:38,901 INFO L87 Difference]: Start difference. First operand 87781 states and 90700 transitions. Second operand 6 states. [2018-11-06 19:40:44,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:40:44,923 INFO L93 Difference]: Finished difference Result 185388 states and 191360 transitions. [2018-11-06 19:40:44,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:40:44,923 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1575 [2018-11-06 19:40:44,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:40:45,010 INFO L225 Difference]: With dead ends: 185388 [2018-11-06 19:40:45,010 INFO L226 Difference]: Without dead ends: 98300 [2018-11-06 19:40:45,051 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:40:45,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98300 states. [2018-11-06 19:40:45,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98300 to 88890. [2018-11-06 19:40:45,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88890 states. [2018-11-06 19:40:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88890 states to 88890 states and 91669 transitions. [2018-11-06 19:40:46,070 INFO L78 Accepts]: Start accepts. Automaton has 88890 states and 91669 transitions. Word has length 1575 [2018-11-06 19:40:46,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:40:46,071 INFO L480 AbstractCegarLoop]: Abstraction has 88890 states and 91669 transitions. [2018-11-06 19:40:46,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:40:46,071 INFO L276 IsEmpty]: Start isEmpty. Operand 88890 states and 91669 transitions. [2018-11-06 19:40:46,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1609 [2018-11-06 19:40:46,115 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:40:46,116 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-06 19:40:46,116 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:40:46,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:40:46,117 INFO L82 PathProgramCache]: Analyzing trace with hash -627640212, now seen corresponding path program 1 times [2018-11-06 19:40:46,117 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:40:46,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:40:46,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:40:46,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:40:46,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:40:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:40:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 2459 trivial. 0 not checked. [2018-11-06 19:40:48,504 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:40:48,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:40:48,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:40:48,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:40:48,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:40:48,506 INFO L87 Difference]: Start difference. First operand 88890 states and 91669 transitions. Second operand 4 states. [2018-11-06 19:40:53,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:40:53,350 INFO L93 Difference]: Finished difference Result 176393 states and 181950 transitions. [2018-11-06 19:40:53,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:40:53,352 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1608 [2018-11-06 19:40:53,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:40:53,439 INFO L225 Difference]: With dead ends: 176393 [2018-11-06 19:40:53,439 INFO L226 Difference]: Without dead ends: 86121 [2018-11-06 19:40:53,474 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:40:53,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86121 states. [2018-11-06 19:40:54,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86121 to 85430. [2018-11-06 19:40:54,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85430 states. [2018-11-06 19:40:54,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85430 states to 85430 states and 87793 transitions. [2018-11-06 19:40:54,224 INFO L78 Accepts]: Start accepts. Automaton has 85430 states and 87793 transitions. Word has length 1608 [2018-11-06 19:40:54,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:40:54,226 INFO L480 AbstractCegarLoop]: Abstraction has 85430 states and 87793 transitions. [2018-11-06 19:40:54,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:40:54,226 INFO L276 IsEmpty]: Start isEmpty. Operand 85430 states and 87793 transitions. [2018-11-06 19:40:54,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1636 [2018-11-06 19:40:54,277 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:40:54,278 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:40:54,278 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:40:54,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:40:54,279 INFO L82 PathProgramCache]: Analyzing trace with hash -604763930, now seen corresponding path program 1 times [2018-11-06 19:40:54,279 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:40:54,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:40:54,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:40:54,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:40:54,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:40:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:40:55,582 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-11-06 19:40:57,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2557 backedges. 1966 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2018-11-06 19:40:57,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:40:57,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:40:57,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:40:57,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:40:57,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:40:57,662 INFO L87 Difference]: Start difference. First operand 85430 states and 87793 transitions. Second operand 4 states. [2018-11-06 19:41:01,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:41:01,699 INFO L93 Difference]: Finished difference Result 180673 states and 185697 transitions. [2018-11-06 19:41:01,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:41:01,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1635 [2018-11-06 19:41:01,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:41:01,816 INFO L225 Difference]: With dead ends: 180673 [2018-11-06 19:41:01,816 INFO L226 Difference]: Without dead ends: 95936 [2018-11-06 19:41:01,872 INFO L604 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 [2018-11-06 19:41:01,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95936 states. [2018-11-06 19:41:02,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95936 to 92481. [2018-11-06 19:41:02,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92481 states. [2018-11-06 19:41:02,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92481 states to 92481 states and 94894 transitions. [2018-11-06 19:41:02,816 INFO L78 Accepts]: Start accepts. Automaton has 92481 states and 94894 transitions. Word has length 1635 [2018-11-06 19:41:02,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:41:02,817 INFO L480 AbstractCegarLoop]: Abstraction has 92481 states and 94894 transitions. [2018-11-06 19:41:02,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:41:02,817 INFO L276 IsEmpty]: Start isEmpty. Operand 92481 states and 94894 transitions. [2018-11-06 19:41:02,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1762 [2018-11-06 19:41:02,869 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:41:02,870 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:41:02,870 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:41:02,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:41:02,871 INFO L82 PathProgramCache]: Analyzing trace with hash 710325529, now seen corresponding path program 1 times [2018-11-06 19:41:02,871 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:41:02,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:41:02,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:41:02,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:41:02,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:41:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:41:04,134 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-06 19:41:06,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 2306 proven. 0 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2018-11-06 19:41:06,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:41:06,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:41:06,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:41:06,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:41:06,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:41:06,068 INFO L87 Difference]: Start difference. First operand 92481 states and 94894 transitions. Second operand 4 states. [2018-11-06 19:41:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:41:11,344 INFO L93 Difference]: Finished difference Result 211216 states and 217012 transitions. [2018-11-06 19:41:11,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:41:11,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1761 [2018-11-06 19:41:11,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:41:11,468 INFO L225 Difference]: With dead ends: 211216 [2018-11-06 19:41:11,468 INFO L226 Difference]: Without dead ends: 119428 [2018-11-06 19:41:11,522 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:41:11,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119428 states. [2018-11-06 19:41:12,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119428 to 98006. [2018-11-06 19:41:12,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98006 states. [2018-11-06 19:41:12,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98006 states to 98006 states and 100417 transitions. [2018-11-06 19:41:12,624 INFO L78 Accepts]: Start accepts. Automaton has 98006 states and 100417 transitions. Word has length 1761 [2018-11-06 19:41:12,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:41:12,624 INFO L480 AbstractCegarLoop]: Abstraction has 98006 states and 100417 transitions. [2018-11-06 19:41:12,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:41:12,625 INFO L276 IsEmpty]: Start isEmpty. Operand 98006 states and 100417 transitions. [2018-11-06 19:41:12,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1797 [2018-11-06 19:41:12,667 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:41:12,668 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-11-06 19:41:12,669 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:41:12,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:41:12,669 INFO L82 PathProgramCache]: Analyzing trace with hash 2099010267, now seen corresponding path program 1 times [2018-11-06 19:41:12,670 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:41:12,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:41:12,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:41:12,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:41:12,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:41:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:41:13,817 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-11-06 19:41:14,098 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-11-06 19:41:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3420 backedges. 2615 proven. 108 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2018-11-06 19:41:16,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:41:16,051 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:41:16,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:41:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:41:16,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:41:19,839 WARN L179 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 1877 DAG size of output: 26 [2018-11-06 19:41:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3420 backedges. 2413 proven. 93 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2018-11-06 19:41:22,777 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:41:22,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-11-06 19:41:22,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:41:22,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:41:22,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:41:22,780 INFO L87 Difference]: Start difference. First operand 98006 states and 100417 transitions. Second operand 7 states. [2018-11-06 19:41:42,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:41:42,824 INFO L93 Difference]: Finished difference Result 208944 states and 214249 transitions. [2018-11-06 19:41:42,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 19:41:42,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1796 [2018-11-06 19:41:42,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:41:42,946 INFO L225 Difference]: With dead ends: 208944 [2018-11-06 19:41:42,946 INFO L226 Difference]: Without dead ends: 111631 [2018-11-06 19:41:43,001 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1804 GetRequests, 1797 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:41:43,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111631 states. [2018-11-06 19:41:44,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111631 to 106528. [2018-11-06 19:41:44,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106528 states. [2018-11-06 19:41:44,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106528 states to 106528 states and 108736 transitions. [2018-11-06 19:41:44,288 INFO L78 Accepts]: Start accepts. Automaton has 106528 states and 108736 transitions. Word has length 1796 [2018-11-06 19:41:44,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:41:44,289 INFO L480 AbstractCegarLoop]: Abstraction has 106528 states and 108736 transitions. [2018-11-06 19:41:44,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:41:44,290 INFO L276 IsEmpty]: Start isEmpty. Operand 106528 states and 108736 transitions. [2018-11-06 19:41:44,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1826 [2018-11-06 19:41:44,337 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:41:44,338 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:41:44,338 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:41:44,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:41:44,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1391706655, now seen corresponding path program 1 times [2018-11-06 19:41:44,339 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:41:44,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:41:44,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:41:44,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:41:44,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:41:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:41:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3405 backedges. 2639 proven. 69 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2018-11-06 19:41:49,537 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:41:49,538 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:41:49,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:41:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:41:49,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:41:50,362 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 24 Received shutdown request... [2018-11-06 19:41:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3405 backedges. 1730 proven. 93 refuted. 0 times theorem prover too weak. 1582 trivial. 0 not checked. [2018-11-06 19:41:56,423 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:41:56,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-11-06 19:41:56,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:41:56,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:41:56,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:41:56,426 INFO L87 Difference]: Start difference. First operand 106528 states and 108736 transitions. Second operand 7 states. [2018-11-06 19:41:56,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 19:41:56,427 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:41:56,432 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:41:56,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:41:56 BoogieIcfgContainer [2018-11-06 19:41:56,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:41:56,434 INFO L168 Benchmark]: Toolchain (without parser) took 219920.74 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 4.3 GB in the end (delta: -2.9 GB). Peak memory consumption was 301.5 MB. Max. memory is 7.1 GB. [2018-11-06 19:41:56,435 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-11-06 19:41:56,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1712.17 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. [2018-11-06 19:41:56,436 INFO L168 Benchmark]: Boogie Procedure Inliner took 461.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -911.2 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-06 19:41:56,437 INFO L168 Benchmark]: Boogie Preprocessor took 236.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2018-11-06 19:41:56,438 INFO L168 Benchmark]: RCFGBuilder took 9458.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 524.0 MB). Peak memory consumption was 524.0 MB. Max. memory is 7.1 GB. [2018-11-06 19:41:56,439 INFO L168 Benchmark]: TraceAbstraction took 208046.94 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.6 GB in the beginning and 4.3 GB in the end (delta: -2.7 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 19:41:56,444 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1712.17 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 461.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -911.2 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 236.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9458.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 524.0 MB). Peak memory consumption was 524.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208046.94 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.6 GB in the beginning and 4.3 GB in the end (delta: -2.7 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 51). Cancelled while BasicCegarLoop was constructing difference of abstraction (106528states) and FLOYD_HOARE automaton (currently 2 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 207.9s OverallTime, 17 OverallIterations, 8 TraceHistogramMax, 139.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9484 SDtfs, 40744 SDslu, 1939 SDs, 0 SdLazy, 90411 SolverSat, 13852 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 107.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6733 GetRequests, 6648 SyntacticMatches, 14 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106528occurred in iteration=16, 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: 12.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 158920 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 29.4s InterpolantComputationTime, 25013 NumberOfCodeBlocks, 25013 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 24990 ConstructedInterpolants, 582 QuantifiedInterpolants, 91649491 SizeOfPredicates, 1 NumberOfNonLiveVariables, 7626 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 23 InterpolantComputations, 15 PerfectInterpolantSequences, 33895/34954 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown