java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label44_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:15:55,485 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:15:55,487 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:15:55,503 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:15:55,503 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:15:55,504 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:15:55,506 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:15:55,507 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:15:55,509 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:15:55,510 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:15:55,511 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:15:55,511 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:15:55,512 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:15:55,513 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:15:55,514 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:15:55,515 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:15:55,516 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:15:55,518 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:15:55,520 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:15:55,522 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:15:55,523 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:15:55,524 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:15:55,527 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:15:55,527 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:15:55,528 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:15:55,529 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:15:55,530 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:15:55,531 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:15:55,532 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:15:55,533 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:15:55,533 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:15:55,534 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:15:55,540 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:15:55,568 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:15:55,569 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:15:55,570 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:15:55,570 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:15:55,571 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:15:55,572 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:15:55,572 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:15:55,572 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:15:55,572 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:15:55,573 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:15:55,573 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:15:55,573 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:15:55,573 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:15:55,573 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:15:55,574 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:15:55,574 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:15:55,575 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:15:55,575 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:15:55,575 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:15:55,575 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:15:55,575 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:15:55,577 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:15:55,577 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:15:55,577 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:15:55,577 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:15:55,578 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:15:55,578 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:15:55,578 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:15:55,633 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:15:55,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:15:55,654 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:15:55,656 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:15:55,656 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:15:55,657 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label44_true-unreach-call.c [2018-10-24 16:15:55,731 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/79bbf71da/53e23518f0cc4d9f9285c4b32193fdb7/FLAG895cd07c0 [2018-10-24 16:15:56,510 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:15:56,511 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label44_true-unreach-call.c [2018-10-24 16:15:56,551 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/79bbf71da/53e23518f0cc4d9f9285c4b32193fdb7/FLAG895cd07c0 [2018-10-24 16:15:56,576 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/79bbf71da/53e23518f0cc4d9f9285c4b32193fdb7 [2018-10-24 16:15:56,589 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:15:56,591 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:15:56,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:15:56,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:15:56,598 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:15:56,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:15:56" (1/1) ... [2018-10-24 16:15:56,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f7cfdde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:15:56, skipping insertion in model container [2018-10-24 16:15:56,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:15:56" (1/1) ... [2018-10-24 16:15:56,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:15:56,786 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:15:58,143 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:15:58,148 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:15:58,845 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:15:58,881 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:15:58,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:15:58 WrapperNode [2018-10-24 16:15:58,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:15:58,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:15:58,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:15:58,883 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:15:58,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:15:58" (1/1) ... [2018-10-24 16:15:58,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:15:58" (1/1) ... [2018-10-24 16:15:59,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:15:59,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:15:59,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:15:59,573 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:15:59,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:15:58" (1/1) ... [2018-10-24 16:15:59,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:15:58" (1/1) ... [2018-10-24 16:15:59,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:15:58" (1/1) ... [2018-10-24 16:15:59,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:15:58" (1/1) ... [2018-10-24 16:15:59,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:15:58" (1/1) ... [2018-10-24 16:15:59,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:15:58" (1/1) ... [2018-10-24 16:15:59,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:15:58" (1/1) ... [2018-10-24 16:15:59,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:15:59,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:15:59,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:15:59,931 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:15:59,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:15:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:16:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:16:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:16:00,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:16:10,113 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:16:10,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:16:10 BoogieIcfgContainer [2018-10-24 16:16:10,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:16:10,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:16:10,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:16:10,118 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:16:10,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:15:56" (1/3) ... [2018-10-24 16:16:10,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b33134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:16:10, skipping insertion in model container [2018-10-24 16:16:10,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:15:58" (2/3) ... [2018-10-24 16:16:10,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b33134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:16:10, skipping insertion in model container [2018-10-24 16:16:10,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:16:10" (3/3) ... [2018-10-24 16:16:10,126 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label44_true-unreach-call.c [2018-10-24 16:16:10,134 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:16:10,143 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:16:10,158 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:16:10,201 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:16:10,201 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:16:10,201 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:16:10,201 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:16:10,202 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:16:10,202 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:16:10,202 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:16:10,202 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:16:10,202 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:16:10,236 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-24 16:16:10,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-24 16:16:10,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:16:10,247 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:16:10,252 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:16:10,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:16:10,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1316472986, now seen corresponding path program 1 times [2018-10-24 16:16:10,262 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:16:10,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:16:10,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:10,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:16:10,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:16:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:16:10,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:16:10,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:16:10,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:16:10,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:16:10,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:16:10,824 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-24 16:16:23,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:16:23,380 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-24 16:16:23,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:16:23,382 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-10-24 16:16:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:16:23,427 INFO L225 Difference]: With dead ends: 3146 [2018-10-24 16:16:23,427 INFO L226 Difference]: Without dead ends: 2320 [2018-10-24 16:16:23,436 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:16:23,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-24 16:16:23,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-24 16:16:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-24 16:16:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3858 transitions. [2018-10-24 16:16:23,598 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3858 transitions. Word has length 51 [2018-10-24 16:16:23,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:16:23,599 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 3858 transitions. [2018-10-24 16:16:23,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:16:23,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3858 transitions. [2018-10-24 16:16:23,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-24 16:16:23,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:16:23,610 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:16:23,610 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:16:23,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:16:23,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1148103894, now seen corresponding path program 1 times [2018-10-24 16:16:23,612 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:16:23,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:16:23,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:23,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:16:23,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:16:23,869 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:16:23,870 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:16:23,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:16:23,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:16:23,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:16:23,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:16:23,873 INFO L87 Difference]: Start difference. First operand 2320 states and 3858 transitions. Second operand 4 states. [2018-10-24 16:16:37,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:16:37,447 INFO L93 Difference]: Finished difference Result 9150 states and 15304 transitions. [2018-10-24 16:16:37,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:16:37,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2018-10-24 16:16:37,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:16:37,484 INFO L225 Difference]: With dead ends: 9150 [2018-10-24 16:16:37,484 INFO L226 Difference]: Without dead ends: 6832 [2018-10-24 16:16:37,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:16:37,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2018-10-24 16:16:37,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6832. [2018-10-24 16:16:37,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-10-24 16:16:37,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 9816 transitions. [2018-10-24 16:16:37,624 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 9816 transitions. Word has length 123 [2018-10-24 16:16:37,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:16:37,625 INFO L481 AbstractCegarLoop]: Abstraction has 6832 states and 9816 transitions. [2018-10-24 16:16:37,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:16:37,625 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 9816 transitions. [2018-10-24 16:16:37,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-24 16:16:37,634 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:16:37,634 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:16:37,634 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:16:37,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:16:37,635 INFO L82 PathProgramCache]: Analyzing trace with hash -440396086, now seen corresponding path program 1 times [2018-10-24 16:16:37,635 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:16:37,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:16:37,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:37,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:16:37,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:16:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-10-24 16:16:38,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:16:38,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:16:38,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:16:38,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:16:38,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:16:38,026 INFO L87 Difference]: Start difference. First operand 6832 states and 9816 transitions. Second operand 4 states. [2018-10-24 16:16:48,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:16:48,384 INFO L93 Difference]: Finished difference Result 15918 states and 23062 transitions. [2018-10-24 16:16:48,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:16:48,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 233 [2018-10-24 16:16:48,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:16:48,429 INFO L225 Difference]: With dead ends: 15918 [2018-10-24 16:16:48,429 INFO L226 Difference]: Without dead ends: 9088 [2018-10-24 16:16:48,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:16:48,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9088 states. [2018-10-24 16:16:48,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9088 to 9088. [2018-10-24 16:16:48,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9088 states. [2018-10-24 16:16:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9088 states to 9088 states and 11694 transitions. [2018-10-24 16:16:48,589 INFO L78 Accepts]: Start accepts. Automaton has 9088 states and 11694 transitions. Word has length 233 [2018-10-24 16:16:48,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:16:48,590 INFO L481 AbstractCegarLoop]: Abstraction has 9088 states and 11694 transitions. [2018-10-24 16:16:48,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:16:48,591 INFO L276 IsEmpty]: Start isEmpty. Operand 9088 states and 11694 transitions. [2018-10-24 16:16:48,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-24 16:16:48,597 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:16:48,598 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:16:48,598 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:16:48,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:16:48,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1363377228, now seen corresponding path program 1 times [2018-10-24 16:16:48,599 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:16:48,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:16:48,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:48,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:16:48,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:16:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-10-24 16:16:48,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:16:48,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:16:48,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:16:48,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:16:48,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:16:48,954 INFO L87 Difference]: Start difference. First operand 9088 states and 11694 transitions. Second operand 4 states. [2018-10-24 16:16:57,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:16:57,472 INFO L93 Difference]: Finished difference Result 36238 states and 46664 transitions. [2018-10-24 16:16:57,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:16:57,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 244 [2018-10-24 16:16:57,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:16:57,551 INFO L225 Difference]: With dead ends: 36238 [2018-10-24 16:16:57,552 INFO L226 Difference]: Without dead ends: 27152 [2018-10-24 16:16:57,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:16:57,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27152 states. [2018-10-24 16:16:57,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27152 to 18112. [2018-10-24 16:16:57,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18112 states. [2018-10-24 16:16:57,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18112 states to 18112 states and 21666 transitions. [2018-10-24 16:16:57,892 INFO L78 Accepts]: Start accepts. Automaton has 18112 states and 21666 transitions. Word has length 244 [2018-10-24 16:16:57,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:16:57,893 INFO L481 AbstractCegarLoop]: Abstraction has 18112 states and 21666 transitions. [2018-10-24 16:16:57,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:16:57,893 INFO L276 IsEmpty]: Start isEmpty. Operand 18112 states and 21666 transitions. [2018-10-24 16:16:57,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-10-24 16:16:57,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:16:57,904 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 16:16:57,904 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:16:57,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:16:57,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1317984070, now seen corresponding path program 1 times [2018-10-24 16:16:57,905 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:16:57,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:16:57,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:57,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:16:57,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:16:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 255 proven. 5 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-10-24 16:16:58,642 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:16:58,642 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:16:58,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:16:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:16:58,799 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:16:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-10-24 16:16:59,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:16:59,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 16:16:59,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:16:59,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:16:59,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:16:59,077 INFO L87 Difference]: Start difference. First operand 18112 states and 21666 transitions. Second operand 7 states. [2018-10-24 16:16:59,650 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-24 16:17:18,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:17:18,073 INFO L93 Difference]: Finished difference Result 73102 states and 85349 transitions. [2018-10-24 16:17:18,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 16:17:18,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2018-10-24 16:17:18,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:17:18,146 INFO L225 Difference]: With dead ends: 73102 [2018-10-24 16:17:18,146 INFO L226 Difference]: Without dead ends: 42906 [2018-10-24 16:17:18,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 314 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:17:18,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42906 states. [2018-10-24 16:17:18,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42906 to 28604. [2018-10-24 16:17:18,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28604 states. [2018-10-24 16:17:18,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28604 states to 28604 states and 31925 transitions. [2018-10-24 16:17:18,676 INFO L78 Accepts]: Start accepts. Automaton has 28604 states and 31925 transitions. Word has length 313 [2018-10-24 16:17:18,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:17:18,677 INFO L481 AbstractCegarLoop]: Abstraction has 28604 states and 31925 transitions. [2018-10-24 16:17:18,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:17:18,677 INFO L276 IsEmpty]: Start isEmpty. Operand 28604 states and 31925 transitions. [2018-10-24 16:17:18,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2018-10-24 16:17:18,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:17:18,697 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:17:18,697 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:17:18,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:17:18,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1848886404, now seen corresponding path program 1 times [2018-10-24 16:17:18,698 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:17:18,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:17:18,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:17:18,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:17:18,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:17:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:17:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 523 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2018-10-24 16:17:19,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:17:19,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:17:19,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:17:19,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:17:19,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:17:19,247 INFO L87 Difference]: Start difference. First operand 28604 states and 31925 transitions. Second operand 4 states. [2018-10-24 16:17:31,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:17:31,013 INFO L93 Difference]: Finished difference Result 103830 states and 116042 transitions. [2018-10-24 16:17:31,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:17:31,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 461 [2018-10-24 16:17:31,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:17:31,149 INFO L225 Difference]: With dead ends: 103830 [2018-10-24 16:17:31,150 INFO L226 Difference]: Without dead ends: 75228 [2018-10-24 16:17:31,182 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:17:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75228 states. [2018-10-24 16:17:31,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75228 to 69212. [2018-10-24 16:17:31,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69212 states. [2018-10-24 16:17:31,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69212 states to 69212 states and 76745 transitions. [2018-10-24 16:17:31,913 INFO L78 Accepts]: Start accepts. Automaton has 69212 states and 76745 transitions. Word has length 461 [2018-10-24 16:17:31,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:17:31,914 INFO L481 AbstractCegarLoop]: Abstraction has 69212 states and 76745 transitions. [2018-10-24 16:17:31,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:17:31,914 INFO L276 IsEmpty]: Start isEmpty. Operand 69212 states and 76745 transitions. [2018-10-24 16:17:31,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2018-10-24 16:17:31,938 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:17:31,938 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:17:31,939 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:17:31,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:17:31,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1756204320, now seen corresponding path program 1 times [2018-10-24 16:17:31,939 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:17:31,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:17:31,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:17:31,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:17:31,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:17:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:17:32,495 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 16:17:32,668 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-10-24 16:17:32,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:17:32,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:17:32,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:17:32,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:17:32,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:17:32,670 INFO L87 Difference]: Start difference. First operand 69212 states and 76745 transitions. Second operand 5 states. [2018-10-24 16:17:42,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:17:42,992 INFO L93 Difference]: Finished difference Result 202356 states and 225092 transitions. [2018-10-24 16:17:42,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:17:42,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 468 [2018-10-24 16:17:42,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:17:43,161 INFO L225 Difference]: With dead ends: 202356 [2018-10-24 16:17:43,162 INFO L226 Difference]: Without dead ends: 133898 [2018-10-24 16:17:43,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:17:43,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133898 states. [2018-10-24 16:17:44,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133898 to 100810. [2018-10-24 16:17:44,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100810 states. [2018-10-24 16:17:44,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100810 states to 100810 states and 109293 transitions. [2018-10-24 16:17:44,349 INFO L78 Accepts]: Start accepts. Automaton has 100810 states and 109293 transitions. Word has length 468 [2018-10-24 16:17:44,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:17:44,350 INFO L481 AbstractCegarLoop]: Abstraction has 100810 states and 109293 transitions. [2018-10-24 16:17:44,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:17:44,350 INFO L276 IsEmpty]: Start isEmpty. Operand 100810 states and 109293 transitions. [2018-10-24 16:17:44,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1008 [2018-10-24 16:17:44,472 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:17:44,473 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:17:44,473 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:17:44,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:17:44,473 INFO L82 PathProgramCache]: Analyzing trace with hash -184787570, now seen corresponding path program 1 times [2018-10-24 16:17:44,474 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:17:44,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:17:44,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:17:44,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:17:44,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:17:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:17:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 611 proven. 5 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-10-24 16:17:46,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:17:46,128 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:17:46,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:17:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:17:46,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:17:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 601 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2018-10-24 16:17:47,160 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:17:47,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 16:17:47,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:17:47,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:17:47,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:17:47,164 INFO L87 Difference]: Start difference. First operand 100810 states and 109293 transitions. Second operand 5 states. [2018-10-24 16:18:03,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:18:03,778 INFO L93 Difference]: Finished difference Result 253495 states and 275485 transitions. [2018-10-24 16:18:03,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:18:03,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1007 [2018-10-24 16:18:03,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:18:03,920 INFO L225 Difference]: With dead ends: 253495 [2018-10-24 16:18:03,920 INFO L226 Difference]: Without dead ends: 153439 [2018-10-24 16:18:03,970 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1015 GetRequests, 1009 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:18:04,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153439 states. [2018-10-24 16:18:05,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153439 to 144415. [2018-10-24 16:18:05,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144415 states. [2018-10-24 16:18:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144415 states to 144415 states and 154014 transitions. [2018-10-24 16:18:05,184 INFO L78 Accepts]: Start accepts. Automaton has 144415 states and 154014 transitions. Word has length 1007 [2018-10-24 16:18:05,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:18:05,185 INFO L481 AbstractCegarLoop]: Abstraction has 144415 states and 154014 transitions. [2018-10-24 16:18:05,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:18:05,185 INFO L276 IsEmpty]: Start isEmpty. Operand 144415 states and 154014 transitions. [2018-10-24 16:18:05,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1013 [2018-10-24 16:18:05,281 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:18:05,282 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:18:05,282 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:18:05,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:18:05,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1368306688, now seen corresponding path program 1 times [2018-10-24 16:18:05,283 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:18:05,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:18:05,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:05,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:18:05,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:18:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 573 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2018-10-24 16:18:06,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:18:06,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:18:06,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:18:06,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:18:06,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:18:06,812 INFO L87 Difference]: Start difference. First operand 144415 states and 154014 transitions. Second operand 4 states. [2018-10-24 16:18:14,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:18:14,364 INFO L93 Difference]: Finished difference Result 285815 states and 304948 transitions. [2018-10-24 16:18:14,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:18:14,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1012 [2018-10-24 16:18:14,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:18:14,543 INFO L225 Difference]: With dead ends: 285815 [2018-10-24 16:18:14,544 INFO L226 Difference]: Without dead ends: 142154 [2018-10-24 16:18:14,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:18:14,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142154 states. [2018-10-24 16:18:16,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142154 to 139146. [2018-10-24 16:18:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139146 states. [2018-10-24 16:18:16,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139146 states to 139146 states and 145983 transitions. [2018-10-24 16:18:16,968 INFO L78 Accepts]: Start accepts. Automaton has 139146 states and 145983 transitions. Word has length 1012 [2018-10-24 16:18:16,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:18:16,968 INFO L481 AbstractCegarLoop]: Abstraction has 139146 states and 145983 transitions. [2018-10-24 16:18:16,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:18:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand 139146 states and 145983 transitions. [2018-10-24 16:18:17,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1036 [2018-10-24 16:18:17,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:18:17,062 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:18:17,063 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:18:17,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:18:17,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1484921900, now seen corresponding path program 1 times [2018-10-24 16:18:17,063 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:18:17,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:18:17,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:17,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:18:17,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:18:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 147 proven. 380 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-10-24 16:18:19,533 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:18:19,533 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:18:19,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:18:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:18:19,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:18:20,290 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 16:18:22,327 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 23 proven. 504 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-10-24 16:18:22,357 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:18:22,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-10-24 16:18:22,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:18:22,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:18:22,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:18:22,360 INFO L87 Difference]: Start difference. First operand 139146 states and 145983 transitions. Second operand 9 states. [2018-10-24 16:18:53,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:18:53,644 INFO L93 Difference]: Finished difference Result 396364 states and 416819 transitions. [2018-10-24 16:18:53,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 16:18:53,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1035 [2018-10-24 16:18:53,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:18:53,915 INFO L225 Difference]: With dead ends: 396364 [2018-10-24 16:18:53,915 INFO L226 Difference]: Without dead ends: 255707 [2018-10-24 16:18:53,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1044 GetRequests, 1031 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2018-10-24 16:18:54,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255707 states. [2018-10-24 16:18:55,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255707 to 190280. [2018-10-24 16:18:55,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190280 states. [2018-10-24 16:18:55,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190280 states to 190280 states and 200535 transitions. [2018-10-24 16:18:55,964 INFO L78 Accepts]: Start accepts. Automaton has 190280 states and 200535 transitions. Word has length 1035 [2018-10-24 16:18:55,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:18:55,965 INFO L481 AbstractCegarLoop]: Abstraction has 190280 states and 200535 transitions. [2018-10-24 16:18:55,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:18:55,965 INFO L276 IsEmpty]: Start isEmpty. Operand 190280 states and 200535 transitions. [2018-10-24 16:18:56,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1161 [2018-10-24 16:18:56,601 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:18:56,602 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:18:56,602 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:18:56,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:18:56,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1434971590, now seen corresponding path program 1 times [2018-10-24 16:18:56,603 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:18:56,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:18:56,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:56,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:18:56,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:18:57,052 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 16:18:57,791 WARN L179 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2018-10-24 16:18:58,044 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2018-10-24 16:18:58,256 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 8 [2018-10-24 16:18:59,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2018-10-24 16:18:59,362 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:18:59,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:18:59,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:18:59,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:18:59,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:18:59,364 INFO L87 Difference]: Start difference. First operand 190280 states and 200535 transitions. Second operand 6 states. [2018-10-24 16:19:09,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:19:09,629 INFO L93 Difference]: Finished difference Result 391087 states and 411980 transitions. [2018-10-24 16:19:09,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:19:09,630 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1160 [2018-10-24 16:19:09,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:19:09,857 INFO L225 Difference]: With dead ends: 391087 [2018-10-24 16:19:09,857 INFO L226 Difference]: Without dead ends: 197044 [2018-10-24 16:19:09,927 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:19:10,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197044 states. [2018-10-24 16:19:11,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197044 to 195539. [2018-10-24 16:19:11,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195539 states. [2018-10-24 16:19:11,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195539 states to 195539 states and 205355 transitions. [2018-10-24 16:19:11,765 INFO L78 Accepts]: Start accepts. Automaton has 195539 states and 205355 transitions. Word has length 1160 [2018-10-24 16:19:11,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:19:11,765 INFO L481 AbstractCegarLoop]: Abstraction has 195539 states and 205355 transitions. [2018-10-24 16:19:11,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:19:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 195539 states and 205355 transitions. [2018-10-24 16:19:11,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1234 [2018-10-24 16:19:11,886 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:11,887 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:19:11,887 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:11,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:11,888 INFO L82 PathProgramCache]: Analyzing trace with hash -659547543, now seen corresponding path program 1 times [2018-10-24 16:19:11,888 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:11,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:11,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:11,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:11,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:17,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1372 backedges. 1061 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2018-10-24 16:19:17,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:19:17,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:19:17,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:19:17,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:19:17,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:17,565 INFO L87 Difference]: Start difference. First operand 195539 states and 205355 transitions. Second operand 4 states. [2018-10-24 16:19:26,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:19:26,225 INFO L93 Difference]: Finished difference Result 387316 states and 406805 transitions. [2018-10-24 16:19:26,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:19:26,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1233 [2018-10-24 16:19:26,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:19:26,427 INFO L225 Difference]: With dead ends: 387316 [2018-10-24 16:19:26,427 INFO L226 Difference]: Without dead ends: 187260 [2018-10-24 16:19:26,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:26,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187260 states. [2018-10-24 16:19:28,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187260 to 177484. [2018-10-24 16:19:28,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177484 states. [2018-10-24 16:19:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177484 states to 177484 states and 184699 transitions. [2018-10-24 16:19:28,532 INFO L78 Accepts]: Start accepts. Automaton has 177484 states and 184699 transitions. Word has length 1233 [2018-10-24 16:19:28,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:19:28,532 INFO L481 AbstractCegarLoop]: Abstraction has 177484 states and 184699 transitions. [2018-10-24 16:19:28,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:19:28,533 INFO L276 IsEmpty]: Start isEmpty. Operand 177484 states and 184699 transitions. [2018-10-24 16:19:28,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1249 [2018-10-24 16:19:28,625 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:28,626 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:19:28,626 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:28,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:28,627 INFO L82 PathProgramCache]: Analyzing trace with hash -645784276, now seen corresponding path program 1 times [2018-10-24 16:19:28,627 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:28,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:28,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:28,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:28,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1465 backedges. 1146 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2018-10-24 16:19:30,058 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:19:30,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:19:30,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:19:30,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:19:30,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:30,060 INFO L87 Difference]: Start difference. First operand 177484 states and 184699 transitions. Second operand 4 states. [2018-10-24 16:19:37,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:19:37,234 INFO L93 Difference]: Finished difference Result 373766 states and 389044 transitions. [2018-10-24 16:19:37,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:19:37,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1248 [2018-10-24 16:19:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:19:37,461 INFO L225 Difference]: With dead ends: 373766 [2018-10-24 16:19:37,462 INFO L226 Difference]: Without dead ends: 197036 [2018-10-24 16:19:37,557 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:37,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197036 states. [2018-10-24 16:19:39,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197036 to 168460. [2018-10-24 16:19:39,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168460 states. [2018-10-24 16:19:39,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168460 states to 168460 states and 172688 transitions. [2018-10-24 16:19:39,859 INFO L78 Accepts]: Start accepts. Automaton has 168460 states and 172688 transitions. Word has length 1248 [2018-10-24 16:19:39,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:19:39,860 INFO L481 AbstractCegarLoop]: Abstraction has 168460 states and 172688 transitions. [2018-10-24 16:19:39,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:19:39,860 INFO L276 IsEmpty]: Start isEmpty. Operand 168460 states and 172688 transitions. [2018-10-24 16:19:39,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1307 [2018-10-24 16:19:39,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:39,969 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:19:39,970 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:39,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:39,970 INFO L82 PathProgramCache]: Analyzing trace with hash 83421533, now seen corresponding path program 1 times [2018-10-24 16:19:39,971 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:39,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:39,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:39,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:39,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:40,910 WARN L179 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-10-24 16:19:41,327 WARN L179 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-10-24 16:19:41,820 WARN L179 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2018-10-24 16:19:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1687 backedges. 947 proven. 143 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2018-10-24 16:19:43,522 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:19:43,522 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:19:43,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Received shutdown request... [2018-10-24 16:19:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:43,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:19:43,867 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 16:19:44,068 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:19:44,069 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:19:44,074 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:19:44,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:19:44 BoogieIcfgContainer [2018-10-24 16:19:44,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:19:44,075 INFO L168 Benchmark]: Toolchain (without parser) took 227485.85 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -665.8 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 16:19:44,076 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:19:44,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2290.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:19:44,078 INFO L168 Benchmark]: Boogie Procedure Inliner took 689.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 776.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -965.2 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:19:44,080 INFO L168 Benchmark]: Boogie Preprocessor took 357.20 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: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:19:44,081 INFO L168 Benchmark]: RCFGBuilder took 10184.14 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 226.0 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -197.1 MB). Peak memory consumption was 639.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:19:44,083 INFO L168 Benchmark]: TraceAbstraction took 213959.27 ms. Allocated memory was 2.5 GB in the beginning and 4.8 GB in the end (delta: 2.3 GB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 262.7 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 16:19:44,088 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2290.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 689.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 776.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -965.2 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 357.20 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: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10184.14 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 226.0 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -197.1 MB). Peak memory consumption was 639.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213959.27 ms. Allocated memory was 2.5 GB in the beginning and 4.8 GB in the end (delta: 2.3 GB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 262.7 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 162]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 162). Cancelled while BasicCegarLoop was analyzing trace of length 1307 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 7 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 213.8s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 170.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5685 SDtfs, 35032 SDslu, 1024 SDs, 0 SdLazy, 81243 SolverSat, 14834 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 135.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2430 GetRequests, 2370 SyntacticMatches, 12 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195539occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 14.8s AutomataMinimizationTime, 13 MinimizatonAttempts, 179762 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 10943 NumberOfCodeBlocks, 10943 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 10927 ConstructedInterpolants, 0 QuantifiedInterpolants, 21727436 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2795 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 9093/9987 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown