java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:58:02,286 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:58:02,288 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:58:02,300 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:58:02,300 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:58:02,303 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:58:02,304 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:58:02,309 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:58:02,313 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:58:02,314 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:58:02,314 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:58:02,315 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:58:02,316 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:58:02,317 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:58:02,326 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:58:02,327 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:58:02,328 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:58:02,331 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:58:02,333 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:58:02,337 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:58:02,338 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:58:02,340 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:58:02,345 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:58:02,345 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:58:02,345 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:58:02,346 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:58:02,348 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:58:02,349 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:58:02,350 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:58:02,352 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:58:02,352 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:58:02,354 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 21:58:02,356 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 21:58:02,384 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:58:02,384 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:58:02,385 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:58:02,385 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:58:02,385 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:58:02,386 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:58:02,386 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:58:02,386 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:58:02,386 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:58:02,386 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:58:02,387 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:58:02,387 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:58:02,387 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:58:02,387 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:58:02,387 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:58:02,388 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:58:02,388 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:58:02,388 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:58:02,388 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:58:02,388 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:58:02,388 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:58:02,389 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:58:02,389 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:58:02,389 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:58:02,389 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:58:02,389 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:58:02,390 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:58:02,390 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:58:02,434 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:58:02,446 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:58:02,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:58:02,452 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:58:02,452 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:58:02,453 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label04_true-unreach-call.c [2018-10-26 21:58:02,509 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9164f607b/8c66eb09562542a48d3e8670ca8da153/FLAG8e199cb2a [2018-10-26 21:58:03,325 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:58:03,326 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label04_true-unreach-call.c [2018-10-26 21:58:03,357 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9164f607b/8c66eb09562542a48d3e8670ca8da153/FLAG8e199cb2a [2018-10-26 21:58:03,376 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9164f607b/8c66eb09562542a48d3e8670ca8da153 [2018-10-26 21:58:03,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:58:03,390 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:58:03,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:58:03,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:58:03,397 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:58:03,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:58:03" (1/1) ... [2018-10-26 21:58:03,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1986afa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:58:03, skipping insertion in model container [2018-10-26 21:58:03,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:58:03" (1/1) ... [2018-10-26 21:58:03,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:58:03,538 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:58:04,503 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:58:04,507 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:58:04,966 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:58:04,996 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:58:04,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:58:04 WrapperNode [2018-10-26 21:58:04,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:58:04,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:58:04,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:58:04,999 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:58:05,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:58:04" (1/1) ... [2018-10-26 21:58:05,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:58:04" (1/1) ... [2018-10-26 21:58:05,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:58:05,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:58:05,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:58:05,456 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:58:05,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:58:04" (1/1) ... [2018-10-26 21:58:05,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:58:04" (1/1) ... [2018-10-26 21:58:05,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:58:04" (1/1) ... [2018-10-26 21:58:05,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:58:04" (1/1) ... [2018-10-26 21:58:05,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:58:04" (1/1) ... [2018-10-26 21:58:05,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:58:04" (1/1) ... [2018-10-26 21:58:05,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:58:04" (1/1) ... [2018-10-26 21:58:05,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:58:05,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:58:05,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:58:05,689 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:58:05,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:58:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:58:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:58:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:58:05,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:58:13,126 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:58:13,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:58:13 BoogieIcfgContainer [2018-10-26 21:58:13,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:58:13,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:58:13,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:58:13,133 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:58:13,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:58:03" (1/3) ... [2018-10-26 21:58:13,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a6a193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:58:13, skipping insertion in model container [2018-10-26 21:58:13,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:58:04" (2/3) ... [2018-10-26 21:58:13,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a6a193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:58:13, skipping insertion in model container [2018-10-26 21:58:13,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:58:13" (3/3) ... [2018-10-26 21:58:13,140 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label04_true-unreach-call.c [2018-10-26 21:58:13,150 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:58:13,167 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:58:13,182 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:58:13,225 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:58:13,226 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:58:13,227 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:58:13,227 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:58:13,227 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:58:13,227 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:58:13,227 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:58:13,227 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:58:13,228 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:58:13,262 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-26 21:58:13,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-26 21:58:13,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:58:13,276 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, 1, 1] [2018-10-26 21:58:13,279 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:58:13,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:58:13,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1884671582, now seen corresponding path program 1 times [2018-10-26 21:58:13,288 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:58:13,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:58:13,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:58:13,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:58:13,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:58:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:58:13,924 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2018-10-26 21:58:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:58:13,994 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:58:13,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 21:58:13,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 21:58:14,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 21:58:14,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:58:14,019 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 6 states. [2018-10-26 21:58:32,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:58:32,509 INFO L93 Difference]: Finished difference Result 4292 states and 8414 transitions. [2018-10-26 21:58:32,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 21:58:32,512 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2018-10-26 21:58:32,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:58:32,564 INFO L225 Difference]: With dead ends: 4292 [2018-10-26 21:58:32,564 INFO L226 Difference]: Without dead ends: 3521 [2018-10-26 21:58:32,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:58:32,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2018-10-26 21:58:32,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 2828. [2018-10-26 21:58:32,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2828 states. [2018-10-26 21:58:32,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 4092 transitions. [2018-10-26 21:58:32,749 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 4092 transitions. Word has length 53 [2018-10-26 21:58:32,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:58:32,750 INFO L481 AbstractCegarLoop]: Abstraction has 2828 states and 4092 transitions. [2018-10-26 21:58:32,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 21:58:32,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 4092 transitions. [2018-10-26 21:58:32,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-26 21:58:32,758 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:58:32,759 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, 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] [2018-10-26 21:58:32,759 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:58:32,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:58:32,760 INFO L82 PathProgramCache]: Analyzing trace with hash -159985225, now seen corresponding path program 1 times [2018-10-26 21:58:32,760 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:58:32,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:58:32,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:58:32,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:58:32,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:58:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:58:33,436 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 11 [2018-10-26 21:58:33,633 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:58:33,633 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:58:33,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:58:33,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:58:33,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:58:33,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:58:33,636 INFO L87 Difference]: Start difference. First operand 2828 states and 4092 transitions. Second operand 5 states. [2018-10-26 21:58:47,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:58:47,976 INFO L93 Difference]: Finished difference Result 8418 states and 12613 transitions. [2018-10-26 21:58:47,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:58:47,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2018-10-26 21:58:47,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:58:48,010 INFO L225 Difference]: With dead ends: 8418 [2018-10-26 21:58:48,010 INFO L226 Difference]: Without dead ends: 5592 [2018-10-26 21:58:48,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:58:48,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5592 states. [2018-10-26 21:58:48,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5592 to 5592. [2018-10-26 21:58:48,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5592 states. [2018-10-26 21:58:48,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 7127 transitions. [2018-10-26 21:58:48,120 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 7127 transitions. Word has length 147 [2018-10-26 21:58:48,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:58:48,120 INFO L481 AbstractCegarLoop]: Abstraction has 5592 states and 7127 transitions. [2018-10-26 21:58:48,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:58:48,121 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 7127 transitions. [2018-10-26 21:58:48,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-26 21:58:48,125 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:58:48,126 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, 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] [2018-10-26 21:58:48,126 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:58:48,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:58:48,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1116212699, now seen corresponding path program 1 times [2018-10-26 21:58:48,127 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:58:48,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:58:48,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:58:48,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:58:48,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:58:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:58:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-10-26 21:58:48,581 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:58:48,581 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:58:48,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:58:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:58:48,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:58:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:58:48,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:58:48,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 21:58:48,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:58:48,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:58:48,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:58:48,804 INFO L87 Difference]: Start difference. First operand 5592 states and 7127 transitions. Second operand 4 states. [2018-10-26 21:58:57,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:58:57,299 INFO L93 Difference]: Finished difference Result 17417 states and 23373 transitions. [2018-10-26 21:58:57,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:58:57,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 236 [2018-10-26 21:58:57,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:58:57,358 INFO L225 Difference]: With dead ends: 17417 [2018-10-26 21:58:57,358 INFO L226 Difference]: Without dead ends: 12518 [2018-10-26 21:58:57,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:58:57,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12518 states. [2018-10-26 21:58:57,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12518 to 7665. [2018-10-26 21:58:57,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7665 states. [2018-10-26 21:58:57,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7665 states to 7665 states and 9557 transitions. [2018-10-26 21:58:57,565 INFO L78 Accepts]: Start accepts. Automaton has 7665 states and 9557 transitions. Word has length 236 [2018-10-26 21:58:57,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:58:57,566 INFO L481 AbstractCegarLoop]: Abstraction has 7665 states and 9557 transitions. [2018-10-26 21:58:57,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:58:57,566 INFO L276 IsEmpty]: Start isEmpty. Operand 7665 states and 9557 transitions. [2018-10-26 21:58:57,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-26 21:58:57,574 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:58:57,575 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, 3, 3, 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] [2018-10-26 21:58:57,575 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:58:57,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:58:57,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1085335796, now seen corresponding path program 1 times [2018-10-26 21:58:57,576 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:58:57,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:58:57,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:58:57,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:58:57,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:58:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:58:58,011 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:58:58,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:58:58,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:58:58,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:58:58,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:58:58,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:58:58,013 INFO L87 Difference]: Start difference. First operand 7665 states and 9557 transitions. Second operand 4 states. [2018-10-26 21:59:04,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:59:04,335 INFO L93 Difference]: Finished difference Result 17401 states and 21937 transitions. [2018-10-26 21:59:04,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:59:04,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 306 [2018-10-26 21:59:04,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:59:04,373 INFO L225 Difference]: With dead ends: 17401 [2018-10-26 21:59:04,373 INFO L226 Difference]: Without dead ends: 9046 [2018-10-26 21:59:04,389 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 [2018-10-26 21:59:04,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9046 states. [2018-10-26 21:59:04,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9046 to 9046. [2018-10-26 21:59:04,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9046 states. [2018-10-26 21:59:04,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9046 states to 9046 states and 10795 transitions. [2018-10-26 21:59:04,561 INFO L78 Accepts]: Start accepts. Automaton has 9046 states and 10795 transitions. Word has length 306 [2018-10-26 21:59:04,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:59:04,562 INFO L481 AbstractCegarLoop]: Abstraction has 9046 states and 10795 transitions. [2018-10-26 21:59:04,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:59:04,563 INFO L276 IsEmpty]: Start isEmpty. Operand 9046 states and 10795 transitions. [2018-10-26 21:59:04,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-10-26 21:59:04,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:59:04,568 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:59:04,568 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:59:04,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:59:04,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1773253513, now seen corresponding path program 1 times [2018-10-26 21:59:04,569 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:59:04,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:59:04,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:59:04,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:59:04,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:59:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:59:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 200 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:59:05,129 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:59:05,129 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:59:05,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:59:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:59:05,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:59:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-10-26 21:59:05,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:59:05,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-10-26 21:59:05,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 21:59:05,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 21:59:05,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:59:05,400 INFO L87 Difference]: Start difference. First operand 9046 states and 10795 transitions. Second operand 6 states. [2018-10-26 21:59:16,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:59:16,240 INFO L93 Difference]: Finished difference Result 29848 states and 35478 transitions. [2018-10-26 21:59:16,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 21:59:16,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 340 [2018-10-26 21:59:16,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:59:16,279 INFO L225 Difference]: With dead ends: 29848 [2018-10-26 21:59:16,279 INFO L226 Difference]: Without dead ends: 18032 [2018-10-26 21:59:16,293 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 339 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:59:16,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18032 states. [2018-10-26 21:59:16,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18032 to 13188. [2018-10-26 21:59:16,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13188 states. [2018-10-26 21:59:16,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13188 states to 13188 states and 14343 transitions. [2018-10-26 21:59:16,500 INFO L78 Accepts]: Start accepts. Automaton has 13188 states and 14343 transitions. Word has length 340 [2018-10-26 21:59:16,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:59:16,501 INFO L481 AbstractCegarLoop]: Abstraction has 13188 states and 14343 transitions. [2018-10-26 21:59:16,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 21:59:16,501 INFO L276 IsEmpty]: Start isEmpty. Operand 13188 states and 14343 transitions. [2018-10-26 21:59:16,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2018-10-26 21:59:16,536 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:59:16,537 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:59:16,537 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:59:16,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:59:16,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1023982483, now seen corresponding path program 1 times [2018-10-26 21:59:16,538 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:59:16,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:59:16,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:59:16,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:59:16,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:59:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:59:17,549 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-26 21:59:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 907 backedges. 558 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2018-10-26 21:59:18,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:59:18,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:59:18,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:59:18,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:59:18,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:59:18,271 INFO L87 Difference]: Start difference. First operand 13188 states and 14343 transitions. Second operand 4 states. [2018-10-26 21:59:26,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:59:26,095 INFO L93 Difference]: Finished difference Result 45031 states and 49532 transitions. [2018-10-26 21:59:26,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:59:26,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1036 [2018-10-26 21:59:26,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:59:26,142 INFO L225 Difference]: With dead ends: 45031 [2018-10-26 21:59:26,142 INFO L226 Difference]: Without dead ends: 31842 [2018-10-26 21:59:26,162 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:59:26,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31842 states. [2018-10-26 21:59:26,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31842 to 30460. [2018-10-26 21:59:26,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30460 states. [2018-10-26 21:59:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30460 states to 30460 states and 32826 transitions. [2018-10-26 21:59:26,800 INFO L78 Accepts]: Start accepts. Automaton has 30460 states and 32826 transitions. Word has length 1036 [2018-10-26 21:59:26,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:59:26,801 INFO L481 AbstractCegarLoop]: Abstraction has 30460 states and 32826 transitions. [2018-10-26 21:59:26,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:59:26,801 INFO L276 IsEmpty]: Start isEmpty. Operand 30460 states and 32826 transitions. [2018-10-26 21:59:26,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1051 [2018-10-26 21:59:26,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:59:26,851 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, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:59:26,852 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:59:26,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:59:26,852 INFO L82 PathProgramCache]: Analyzing trace with hash -919672874, now seen corresponding path program 1 times [2018-10-26 21:59:26,852 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:59:26,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:59:26,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:59:26,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:59:26,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:59:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:59:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 477 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-26 21:59:27,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:59:27,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:59:27,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:59:27,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:59:27,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:59:27,926 INFO L87 Difference]: Start difference. First operand 30460 states and 32826 transitions. Second operand 3 states. [2018-10-26 21:59:31,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:59:31,043 INFO L93 Difference]: Finished difference Result 62300 states and 67186 transitions. [2018-10-26 21:59:31,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:59:31,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1050 [2018-10-26 21:59:31,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:59:31,086 INFO L225 Difference]: With dead ends: 62300 [2018-10-26 21:59:31,086 INFO L226 Difference]: Without dead ends: 32533 [2018-10-26 21:59:31,114 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:59:31,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32533 states. [2018-10-26 21:59:31,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32533 to 32533. [2018-10-26 21:59:31,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32533 states. [2018-10-26 21:59:31,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32533 states to 32533 states and 34929 transitions. [2018-10-26 21:59:31,449 INFO L78 Accepts]: Start accepts. Automaton has 32533 states and 34929 transitions. Word has length 1050 [2018-10-26 21:59:31,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:59:31,451 INFO L481 AbstractCegarLoop]: Abstraction has 32533 states and 34929 transitions. [2018-10-26 21:59:31,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:59:31,451 INFO L276 IsEmpty]: Start isEmpty. Operand 32533 states and 34929 transitions. [2018-10-26 21:59:31,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1079 [2018-10-26 21:59:31,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:59:31,472 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:59:31,472 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:59:31,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:59:31,473 INFO L82 PathProgramCache]: Analyzing trace with hash 801899915, now seen corresponding path program 1 times [2018-10-26 21:59:31,473 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:59:31,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:59:31,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:59:31,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:59:31,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:59:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:59:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 649 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2018-10-26 21:59:32,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:59:32,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:59:32,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:59:32,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:59:32,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:59:32,847 INFO L87 Difference]: Start difference. First operand 32533 states and 34929 transitions. Second operand 4 states. [2018-10-26 21:59:37,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:59:37,775 INFO L93 Difference]: Finished difference Result 69901 states and 75440 transitions. [2018-10-26 21:59:37,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:59:37,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1078 [2018-10-26 21:59:37,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:59:37,813 INFO L225 Difference]: With dead ends: 69901 [2018-10-26 21:59:37,813 INFO L226 Difference]: Without dead ends: 37367 [2018-10-26 21:59:37,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:59:37,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37367 states. [2018-10-26 21:59:38,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37367 to 37367. [2018-10-26 21:59:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37367 states. [2018-10-26 21:59:38,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37367 states to 37367 states and 40066 transitions. [2018-10-26 21:59:38,215 INFO L78 Accepts]: Start accepts. Automaton has 37367 states and 40066 transitions. Word has length 1078 [2018-10-26 21:59:38,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:59:38,217 INFO L481 AbstractCegarLoop]: Abstraction has 37367 states and 40066 transitions. [2018-10-26 21:59:38,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:59:38,217 INFO L276 IsEmpty]: Start isEmpty. Operand 37367 states and 40066 transitions. [2018-10-26 21:59:38,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2018-10-26 21:59:38,236 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:59:38,237 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, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:59:38,237 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:59:38,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:59:38,237 INFO L82 PathProgramCache]: Analyzing trace with hash 949946755, now seen corresponding path program 1 times [2018-10-26 21:59:38,239 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:59:38,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:59:38,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:59:38,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:59:38,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:59:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:59:39,244 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-10-26 21:59:42,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 471 proven. 752 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-10-26 21:59:42,211 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:59:42,211 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:59:42,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:59:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:59:42,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:59:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2018-10-26 21:59:43,102 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:59:43,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-10-26 21:59:43,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 21:59:43,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 21:59:43,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-10-26 21:59:43,105 INFO L87 Difference]: Start difference. First operand 37367 states and 40066 transitions. Second operand 12 states. [2018-10-26 22:00:04,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:00:04,572 INFO L93 Difference]: Finished difference Result 109053 states and 118617 transitions. [2018-10-26 22:00:04,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-26 22:00:04,573 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1128 [2018-10-26 22:00:04,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:00:04,662 INFO L225 Difference]: With dead ends: 109053 [2018-10-26 22:00:04,663 INFO L226 Difference]: Without dead ends: 72379 [2018-10-26 22:00:04,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1171 GetRequests, 1141 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2018-10-26 22:00:04,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72379 states. [2018-10-26 22:00:05,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72379 to 50496. [2018-10-26 22:00:05,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50496 states. [2018-10-26 22:00:05,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50496 states to 50496 states and 54053 transitions. [2018-10-26 22:00:05,825 INFO L78 Accepts]: Start accepts. Automaton has 50496 states and 54053 transitions. Word has length 1128 [2018-10-26 22:00:05,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:00:05,827 INFO L481 AbstractCegarLoop]: Abstraction has 50496 states and 54053 transitions. [2018-10-26 22:00:05,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-26 22:00:05,827 INFO L276 IsEmpty]: Start isEmpty. Operand 50496 states and 54053 transitions. [2018-10-26 22:00:05,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2018-10-26 22:00:05,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:00:05,847 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, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:00:05,847 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:00:05,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:00:05,848 INFO L82 PathProgramCache]: Analyzing trace with hash -463347198, now seen corresponding path program 1 times [2018-10-26 22:00:05,848 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:00:05,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:00:05,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:05,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:00:05,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:00:07,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 521 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2018-10-26 22:00:07,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:00:07,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:00:07,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:00:07,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:00:07,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:00:07,335 INFO L87 Difference]: Start difference. First operand 50496 states and 54053 transitions. Second operand 4 states. [2018-10-26 22:00:13,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:00:13,760 INFO L93 Difference]: Finished difference Result 107209 states and 115301 transitions. [2018-10-26 22:00:13,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:00:13,761 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1128 [2018-10-26 22:00:13,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:00:13,822 INFO L225 Difference]: With dead ends: 107209 [2018-10-26 22:00:13,822 INFO L226 Difference]: Without dead ends: 51858 [2018-10-26 22:00:13,849 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:00:13,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51858 states. [2018-10-26 22:00:14,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51858 to 51167. [2018-10-26 22:00:14,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51167 states. [2018-10-26 22:00:14,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51167 states to 51167 states and 53884 transitions. [2018-10-26 22:00:14,361 INFO L78 Accepts]: Start accepts. Automaton has 51167 states and 53884 transitions. Word has length 1128 [2018-10-26 22:00:14,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:00:14,362 INFO L481 AbstractCegarLoop]: Abstraction has 51167 states and 53884 transitions. [2018-10-26 22:00:14,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:00:14,362 INFO L276 IsEmpty]: Start isEmpty. Operand 51167 states and 53884 transitions. [2018-10-26 22:00:14,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2018-10-26 22:00:14,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:00:14,381 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:00:14,381 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:00:14,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:00:14,384 INFO L82 PathProgramCache]: Analyzing trace with hash -57160703, now seen corresponding path program 1 times [2018-10-26 22:00:14,385 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:00:14,385 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:00:14,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:14,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:00:14,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:00:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 665 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-26 22:00:16,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:00:16,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:00:16,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:00:16,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:00:16,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:00:16,237 INFO L87 Difference]: Start difference. First operand 51167 states and 53884 transitions. Second operand 4 states. [2018-10-26 22:00:21,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:00:21,765 INFO L93 Difference]: Finished difference Result 135509 states and 143194 transitions. [2018-10-26 22:00:21,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:00:21,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1144 [2018-10-26 22:00:21,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:00:21,856 INFO L225 Difference]: With dead ends: 135509 [2018-10-26 22:00:21,857 INFO L226 Difference]: Without dead ends: 85035 [2018-10-26 22:00:21,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:00:21,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85035 states. [2018-10-26 22:00:22,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85035 to 85033. [2018-10-26 22:00:22,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85033 states. [2018-10-26 22:00:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85033 states to 85033 states and 89073 transitions. [2018-10-26 22:00:22,589 INFO L78 Accepts]: Start accepts. Automaton has 85033 states and 89073 transitions. Word has length 1144 [2018-10-26 22:00:22,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:00:22,589 INFO L481 AbstractCegarLoop]: Abstraction has 85033 states and 89073 transitions. [2018-10-26 22:00:22,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:00:22,589 INFO L276 IsEmpty]: Start isEmpty. Operand 85033 states and 89073 transitions. [2018-10-26 22:00:22,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1182 [2018-10-26 22:00:22,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:00:22,607 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:00:22,607 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:00:22,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:00:22,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1206864501, now seen corresponding path program 1 times [2018-10-26 22:00:22,608 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:00:22,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:00:22,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:22,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:00:22,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:00:23,487 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-10-26 22:00:24,032 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 16 [2018-10-26 22:00:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1419 backedges. 675 proven. 499 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-10-26 22:00:27,630 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:00:27,631 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:00:27,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:00:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:00:27,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:00:29,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1419 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2018-10-26 22:00:29,263 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:00:29,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 12 [2018-10-26 22:00:29,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-26 22:00:29,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-26 22:00:29,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-10-26 22:00:29,265 INFO L87 Difference]: Start difference. First operand 85033 states and 89073 transitions. Second operand 13 states. [2018-10-26 22:00:47,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:00:47,758 INFO L93 Difference]: Finished difference Result 188056 states and 196736 transitions. [2018-10-26 22:00:47,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-26 22:00:47,758 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1181 [2018-10-26 22:00:47,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:00:47,854 INFO L225 Difference]: With dead ends: 188056 [2018-10-26 22:00:47,854 INFO L226 Difference]: Without dead ends: 96101 [2018-10-26 22:00:47,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1205 GetRequests, 1181 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2018-10-26 22:00:47,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96101 states. [2018-10-26 22:00:48,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96101 to 91243. [2018-10-26 22:00:48,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91243 states. [2018-10-26 22:00:49,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91243 states to 91243 states and 94645 transitions. [2018-10-26 22:00:49,072 INFO L78 Accepts]: Start accepts. Automaton has 91243 states and 94645 transitions. Word has length 1181 [2018-10-26 22:00:49,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:00:49,073 INFO L481 AbstractCegarLoop]: Abstraction has 91243 states and 94645 transitions. [2018-10-26 22:00:49,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-26 22:00:49,073 INFO L276 IsEmpty]: Start isEmpty. Operand 91243 states and 94645 transitions. [2018-10-26 22:00:49,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1198 [2018-10-26 22:00:49,085 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:00:49,086 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:00:49,086 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:00:49,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:00:49,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1072137315, now seen corresponding path program 1 times [2018-10-26 22:00:49,087 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:00:49,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:00:49,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:49,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:00:49,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:00:50,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1467 backedges. 838 proven. 0 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2018-10-26 22:00:50,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:00:50,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:00:50,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:00:50,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:00:50,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:00:50,192 INFO L87 Difference]: Start difference. First operand 91243 states and 94645 transitions. Second operand 4 states. [2018-10-26 22:00:55,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:00:55,596 INFO L93 Difference]: Finished difference Result 217041 states and 225289 transitions. [2018-10-26 22:00:55,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:00:55,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1197 [2018-10-26 22:00:55,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:00:55,725 INFO L225 Difference]: With dead ends: 217041 [2018-10-26 22:00:55,726 INFO L226 Difference]: Without dead ends: 122336 [2018-10-26 22:00:55,778 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:00:55,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122336 states. [2018-10-26 22:00:56,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122336 to 107128. [2018-10-26 22:00:56,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107128 states. [2018-10-26 22:00:56,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107128 states to 107128 states and 110471 transitions. [2018-10-26 22:00:56,770 INFO L78 Accepts]: Start accepts. Automaton has 107128 states and 110471 transitions. Word has length 1197 [2018-10-26 22:00:56,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:00:56,771 INFO L481 AbstractCegarLoop]: Abstraction has 107128 states and 110471 transitions. [2018-10-26 22:00:56,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:00:56,771 INFO L276 IsEmpty]: Start isEmpty. Operand 107128 states and 110471 transitions. [2018-10-26 22:00:56,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1212 [2018-10-26 22:00:56,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:00:56,785 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:00:56,785 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:00:56,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:00:56,786 INFO L82 PathProgramCache]: Analyzing trace with hash 969939361, now seen corresponding path program 1 times [2018-10-26 22:00:56,786 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:00:56,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:00:56,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:56,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:00:56,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:00:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1530 backedges. 629 proven. 0 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2018-10-26 22:00:58,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:00:58,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:00:58,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:00:58,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:00:58,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:00:58,287 INFO L87 Difference]: Start difference. First operand 107128 states and 110471 transitions. Second operand 4 states. [2018-10-26 22:01:03,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:01:03,284 INFO L93 Difference]: Finished difference Result 233602 states and 240931 transitions. [2018-10-26 22:01:03,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:01:03,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1211 [2018-10-26 22:01:03,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:01:03,842 INFO L225 Difference]: With dead ends: 233602 [2018-10-26 22:01:03,843 INFO L226 Difference]: Without dead ends: 123707 [2018-10-26 22:01:03,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:01:03,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123707 states. [2018-10-26 22:01:04,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123707 to 119561. [2018-10-26 22:01:04,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119561 states. [2018-10-26 22:01:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119561 states to 119561 states and 122869 transitions. [2018-10-26 22:01:04,838 INFO L78 Accepts]: Start accepts. Automaton has 119561 states and 122869 transitions. Word has length 1211 [2018-10-26 22:01:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:01:04,838 INFO L481 AbstractCegarLoop]: Abstraction has 119561 states and 122869 transitions. [2018-10-26 22:01:04,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:01:04,839 INFO L276 IsEmpty]: Start isEmpty. Operand 119561 states and 122869 transitions. [2018-10-26 22:01:04,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1248 [2018-10-26 22:01:04,852 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:01:04,853 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:01:04,853 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:01:04,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:01:04,854 INFO L82 PathProgramCache]: Analyzing trace with hash -200433740, now seen corresponding path program 1 times [2018-10-26 22:01:04,854 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:01:04,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:01:04,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:01:04,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:01:04,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:01:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:01:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 847 proven. 1055 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-10-26 22:01:08,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:01:08,807 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:01:08,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:01:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:01:09,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:01:09,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 1089 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2018-10-26 22:01:09,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:01:09,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-10-26 22:01:09,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 22:01:09,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 22:01:09,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-26 22:01:09,800 INFO L87 Difference]: Start difference. First operand 119561 states and 122869 transitions. Second operand 12 states. [2018-10-26 22:01:26,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:01:26,343 INFO L93 Difference]: Finished difference Result 276718 states and 284415 transitions. [2018-10-26 22:01:26,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-26 22:01:26,344 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1247 [2018-10-26 22:01:26,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:01:26,509 INFO L225 Difference]: With dead ends: 276718 [2018-10-26 22:01:26,510 INFO L226 Difference]: Without dead ends: 157850 [2018-10-26 22:01:26,569 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1285 GetRequests, 1258 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2018-10-26 22:01:26,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157850 states. [2018-10-26 22:01:27,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157850 to 114029. [2018-10-26 22:01:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114029 states. [2018-10-26 22:01:27,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114029 states to 114029 states and 116190 transitions. [2018-10-26 22:01:27,769 INFO L78 Accepts]: Start accepts. Automaton has 114029 states and 116190 transitions. Word has length 1247 [2018-10-26 22:01:27,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:01:27,769 INFO L481 AbstractCegarLoop]: Abstraction has 114029 states and 116190 transitions. [2018-10-26 22:01:27,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-26 22:01:27,770 INFO L276 IsEmpty]: Start isEmpty. Operand 114029 states and 116190 transitions. [2018-10-26 22:01:27,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1283 [2018-10-26 22:01:27,785 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:01:27,786 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:01:27,786 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:01:27,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:01:27,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1866356196, now seen corresponding path program 1 times [2018-10-26 22:01:27,787 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:01:27,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:01:27,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:01:27,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:01:27,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:01:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:01:28,555 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-26 22:01:29,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1401 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2018-10-26 22:01:29,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:01:29,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:01:29,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:01:29,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:01:29,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:01:29,429 INFO L87 Difference]: Start difference. First operand 114029 states and 116190 transitions. Second operand 4 states. [2018-10-26 22:01:34,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:01:34,268 INFO L93 Difference]: Finished difference Result 228746 states and 233184 transitions. [2018-10-26 22:01:34,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:01:34,269 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1282 [2018-10-26 22:01:34,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:01:34,380 INFO L225 Difference]: With dead ends: 228746 [2018-10-26 22:01:34,380 INFO L226 Difference]: Without dead ends: 111950 [2018-10-26 22:01:34,430 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:01:34,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111950 states. [2018-10-26 22:01:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111950 to 109186. [2018-10-26 22:01:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109186 states. [2018-10-26 22:01:35,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109186 states to 109186 states and 111046 transitions. [2018-10-26 22:01:35,352 INFO L78 Accepts]: Start accepts. Automaton has 109186 states and 111046 transitions. Word has length 1282 [2018-10-26 22:01:35,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:01:35,353 INFO L481 AbstractCegarLoop]: Abstraction has 109186 states and 111046 transitions. [2018-10-26 22:01:35,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:01:35,353 INFO L276 IsEmpty]: Start isEmpty. Operand 109186 states and 111046 transitions. [2018-10-26 22:01:35,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1306 [2018-10-26 22:01:35,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:01:35,370 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:01:35,370 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:01:35,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:01:35,371 INFO L82 PathProgramCache]: Analyzing trace with hash 930754700, now seen corresponding path program 1 times [2018-10-26 22:01:35,371 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:01:35,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:01:35,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:01:35,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:01:35,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:01:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:01:37,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1778 backedges. 1041 proven. 159 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-10-26 22:01:37,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:01:37,227 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:01:37,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:01:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:01:37,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:01:41,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1778 backedges. 1041 proven. 159 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-10-26 22:01:41,413 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:01:41,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2018-10-26 22:01:41,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 22:01:41,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 22:01:41,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:01:41,415 INFO L87 Difference]: Start difference. First operand 109186 states and 111046 transitions. Second operand 7 states. Received shutdown request... [2018-10-26 22:01:49,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 22:01:49,926 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 22:01:49,931 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 22:01:49,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:01:49 BoogieIcfgContainer [2018-10-26 22:01:49,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:01:49,933 INFO L168 Benchmark]: Toolchain (without parser) took 226544.37 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 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 919.3 MB. Max. memory is 7.1 GB. [2018-10-26 22:01:49,934 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:01:49,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1606.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-26 22:01:49,935 INFO L168 Benchmark]: Boogie Procedure Inliner took 457.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -943.5 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-26 22:01:49,936 INFO L168 Benchmark]: Boogie Preprocessor took 232.94 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2018-10-26 22:01:49,937 INFO L168 Benchmark]: RCFGBuilder took 7438.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 531.7 MB). Peak memory consumption was 531.7 MB. Max. memory is 7.1 GB. [2018-10-26 22:01:49,937 INFO L168 Benchmark]: TraceAbstraction took 216803.52 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.7 GB in the beginning and 3.7 GB in the end (delta: -2.1 GB). Peak memory consumption was 383.1 MB. Max. memory is 7.1 GB. [2018-10-26 22:01:49,943 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1606.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 457.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -943.5 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 232.94 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7438.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 531.7 MB). Peak memory consumption was 531.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216803.52 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.7 GB in the beginning and 3.7 GB in the end (delta: -2.1 GB). Peak memory consumption was 383.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 165]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 165). Cancelled while BasicCegarLoop was constructing difference of abstraction (109186states) and FLOYD_HOARE automaton (currently 8 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (47046 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 216.7s OverallTime, 17 OverallIterations, 8 TraceHistogramMax, 168.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9245 SDtfs, 60646 SDslu, 2164 SDs, 0 SdLazy, 112364 SolverSat, 15190 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 132.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5613 GetRequests, 5482 SyntacticMatches, 13 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119561occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.7s AutomataMinimizationTime, 16 MinimizatonAttempts, 105145 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 18.1s InterpolantComputationTime, 20506 NumberOfCodeBlocks, 20506 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 20483 ConstructedInterpolants, 0 QuantifiedInterpolants, 65326768 SizeOfPredicates, 4 NumberOfNonLiveVariables, 6341 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 23 InterpolantComputations, 16 PerfectInterpolantSequences, 20989/23621 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown