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_label35_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:39:02,345 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:39:02,347 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:39:02,359 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:39:02,359 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:39:02,360 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:39:02,362 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:39:02,364 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:39:02,366 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:39:02,366 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:39:02,367 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:39:02,368 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:39:02,369 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:39:02,370 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:39:02,371 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:39:02,372 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:39:02,373 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:39:02,374 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:39:02,376 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:39:02,378 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:39:02,379 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:39:02,380 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:39:02,383 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:39:02,383 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:39:02,383 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:39:02,384 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:39:02,385 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:39:02,386 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:39:02,387 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:39:02,388 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:39:02,389 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:39:02,389 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 14:39:02,390 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 14:39:02,390 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 14:39:02,391 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 14:39:02,393 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 14:39:02,393 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:39:02,423 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:39:02,424 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:39:02,424 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:39:02,428 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:39:02,429 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:39:02,430 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:39:02,430 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:39:02,430 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:39:02,430 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:39:02,430 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:39:02,431 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:39:02,431 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:39:02,431 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:39:02,431 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:39:02,431 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:39:02,432 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:39:02,432 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:39:02,432 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:39:02,432 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:39:02,432 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:39:02,433 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:39:02,434 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:39:02,434 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:39:02,434 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:39:02,434 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:39:02,435 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:39:02,435 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:39:02,435 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:39:02,489 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:39:02,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:39:02,505 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:39:02,507 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:39:02,507 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:39:02,508 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label35_false-unreach-call.c [2018-10-24 14:39:02,571 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/12b3251c9/5c85fd1ed95b4622916bfbb8d9374cc9/FLAGdbb57204b [2018-10-24 14:39:03,366 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:39:03,367 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label35_false-unreach-call.c [2018-10-24 14:39:03,398 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/12b3251c9/5c85fd1ed95b4622916bfbb8d9374cc9/FLAGdbb57204b [2018-10-24 14:39:03,421 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/12b3251c9/5c85fd1ed95b4622916bfbb8d9374cc9 [2018-10-24 14:39:03,435 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:39:03,438 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:39:03,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:39:03,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:39:03,446 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:39:03,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:39:03" (1/1) ... [2018-10-24 14:39:03,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:03, skipping insertion in model container [2018-10-24 14:39:03,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:39:03" (1/1) ... [2018-10-24 14:39:03,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:39:03,613 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:39:04,802 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:39:04,807 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:39:05,223 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:39:05,257 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:39:05,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:05 WrapperNode [2018-10-24 14:39:05,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:39:05,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:39:05,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:39:05,261 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:39:05,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:05" (1/1) ... [2018-10-24 14:39:05,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:05" (1/1) ... [2018-10-24 14:39:05,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:39:05,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:39:05,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:39:05,767 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:39:05,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:05" (1/1) ... [2018-10-24 14:39:05,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:05" (1/1) ... [2018-10-24 14:39:05,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:05" (1/1) ... [2018-10-24 14:39:05,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:05" (1/1) ... [2018-10-24 14:39:05,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:05" (1/1) ... [2018-10-24 14:39:05,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:05" (1/1) ... [2018-10-24 14:39:05,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:05" (1/1) ... [2018-10-24 14:39:06,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:39:06,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:39:06,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:39:06,027 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:39:06,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:39:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:39:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:39:06,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:39:13,152 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:39:13,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:39:13 BoogieIcfgContainer [2018-10-24 14:39:13,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:39:13,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:39:13,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:39:13,158 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:39:13,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:39:03" (1/3) ... [2018-10-24 14:39:13,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769a52ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:39:13, skipping insertion in model container [2018-10-24 14:39:13,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:05" (2/3) ... [2018-10-24 14:39:13,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769a52ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:39:13, skipping insertion in model container [2018-10-24 14:39:13,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:39:13" (3/3) ... [2018-10-24 14:39:13,162 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label35_false-unreach-call.c [2018-10-24 14:39:13,173 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:39:13,183 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:39:13,202 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:39:13,246 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:39:13,247 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:39:13,247 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:39:13,247 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:39:13,247 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:39:13,248 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:39:13,248 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:39:13,248 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:39:13,248 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:39:13,283 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-24 14:39:13,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-24 14:39:13,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:39:13,292 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:39:13,294 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:39:13,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:39:13,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1961166346, now seen corresponding path program 1 times [2018-10-24 14:39:13,305 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:39:13,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:39:13,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:13,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:39:13,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:39:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:39:13,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:39:13,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:39:13,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:39:13,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:39:13,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:39:13,706 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-10-24 14:39:25,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:39:25,767 INFO L93 Difference]: Finished difference Result 2918 states and 5666 transitions. [2018-10-24 14:39:25,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:39:25,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-10-24 14:39:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:39:25,821 INFO L225 Difference]: With dead ends: 2918 [2018-10-24 14:39:25,822 INFO L226 Difference]: Without dead ends: 2153 [2018-10-24 14:39:25,831 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:39:25,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2018-10-24 14:39:26,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2018-10-24 14:39:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2018-10-24 14:39:26,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3619 transitions. [2018-10-24 14:39:26,105 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3619 transitions. Word has length 15 [2018-10-24 14:39:26,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:39:26,106 INFO L481 AbstractCegarLoop]: Abstraction has 2153 states and 3619 transitions. [2018-10-24 14:39:26,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:39:26,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3619 transitions. [2018-10-24 14:39:26,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-24 14:39:26,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:39:26,110 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:39:26,111 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:39:26,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:39:26,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1821587577, now seen corresponding path program 1 times [2018-10-24 14:39:26,112 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:39:26,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:39:26,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:26,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:39:26,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:39:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:39:26,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:39:26,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:39:26,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:39:26,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:39:26,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:39:26,471 INFO L87 Difference]: Start difference. First operand 2153 states and 3619 transitions. Second operand 4 states. [2018-10-24 14:39:35,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:39:35,587 INFO L93 Difference]: Finished difference Result 6377 states and 10776 transitions. [2018-10-24 14:39:35,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:39:35,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2018-10-24 14:39:35,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:39:35,611 INFO L225 Difference]: With dead ends: 6377 [2018-10-24 14:39:35,612 INFO L226 Difference]: Without dead ends: 4226 [2018-10-24 14:39:35,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:39:35,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2018-10-24 14:39:35,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4226. [2018-10-24 14:39:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4226 states. [2018-10-24 14:39:35,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 6043 transitions. [2018-10-24 14:39:35,701 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 6043 transitions. Word has length 81 [2018-10-24 14:39:35,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:39:35,701 INFO L481 AbstractCegarLoop]: Abstraction has 4226 states and 6043 transitions. [2018-10-24 14:39:35,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:39:35,702 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 6043 transitions. [2018-10-24 14:39:35,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-24 14:39:35,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:39:35,715 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:39:35,715 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:39:35,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:39:35,716 INFO L82 PathProgramCache]: Analyzing trace with hash 60232242, now seen corresponding path program 1 times [2018-10-24 14:39:35,716 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:39:35,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:39:35,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:35,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:39:35,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:39:36,669 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 11 [2018-10-24 14:39:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-24 14:39:36,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:39:36,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:39:36,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:39:36,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:39:36,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:39:36,803 INFO L87 Difference]: Start difference. First operand 4226 states and 6043 transitions. Second operand 5 states. [2018-10-24 14:39:44,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:39:44,972 INFO L93 Difference]: Finished difference Result 13287 states and 18113 transitions. [2018-10-24 14:39:44,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:39:44,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2018-10-24 14:39:44,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:39:45,013 INFO L225 Difference]: With dead ends: 13287 [2018-10-24 14:39:45,013 INFO L226 Difference]: Without dead ends: 9063 [2018-10-24 14:39:45,021 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:39:45,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9063 states. [2018-10-24 14:39:45,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9063 to 8372. [2018-10-24 14:39:45,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8372 states. [2018-10-24 14:39:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8372 states to 8372 states and 10467 transitions. [2018-10-24 14:39:45,271 INFO L78 Accepts]: Start accepts. Automaton has 8372 states and 10467 transitions. Word has length 200 [2018-10-24 14:39:45,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:39:45,272 INFO L481 AbstractCegarLoop]: Abstraction has 8372 states and 10467 transitions. [2018-10-24 14:39:45,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:39:45,272 INFO L276 IsEmpty]: Start isEmpty. Operand 8372 states and 10467 transitions. [2018-10-24 14:39:45,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-10-24 14:39:45,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:39:45,292 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:39:45,292 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:39:45,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:39:45,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1590270905, now seen corresponding path program 1 times [2018-10-24 14:39:45,293 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:39:45,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:39:45,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:45,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:39:45,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:39:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 256 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-24 14:39:45,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:39:45,839 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:39:45,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:39:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:39:45,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:39:46,135 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-10-24 14:39:46,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:39:46,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:39:46,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:39:46,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:39:46,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:39:46,170 INFO L87 Difference]: Start difference. First operand 8372 states and 10467 transitions. Second operand 6 states. [2018-10-24 14:39:57,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:39:57,749 INFO L93 Difference]: Finished difference Result 26432 states and 32780 transitions. [2018-10-24 14:39:57,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:39:57,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 383 [2018-10-24 14:39:57,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:39:57,834 INFO L225 Difference]: With dead ends: 26432 [2018-10-24 14:39:57,834 INFO L226 Difference]: Without dead ends: 15986 [2018-10-24 14:39:57,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 383 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:39:57,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15986 states. [2018-10-24 14:39:58,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15986 to 11810. [2018-10-24 14:39:58,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11810 states. [2018-10-24 14:39:58,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11810 states to 11810 states and 13599 transitions. [2018-10-24 14:39:58,107 INFO L78 Accepts]: Start accepts. Automaton has 11810 states and 13599 transitions. Word has length 383 [2018-10-24 14:39:58,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:39:58,108 INFO L481 AbstractCegarLoop]: Abstraction has 11810 states and 13599 transitions. [2018-10-24 14:39:58,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:39:58,108 INFO L276 IsEmpty]: Start isEmpty. Operand 11810 states and 13599 transitions. [2018-10-24 14:39:58,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-10-24 14:39:58,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:39:58,116 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:39:58,116 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:39:58,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:39:58,117 INFO L82 PathProgramCache]: Analyzing trace with hash -363516937, now seen corresponding path program 1 times [2018-10-24 14:39:58,117 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:39:58,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:39:58,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:58,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:39:58,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:39:58,902 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-10-24 14:39:58,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:39:58,902 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:39:58,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:39:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:39:59,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:39:59,118 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-24 14:39:59,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:39:59,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 14:39:59,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:39:59,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:39:59,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:39:59,145 INFO L87 Difference]: Start difference. First operand 11810 states and 13599 transitions. Second operand 5 states. [2018-10-24 14:40:11,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:40:11,127 INFO L93 Difference]: Finished difference Result 47806 states and 56547 transitions. [2018-10-24 14:40:11,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:40:11,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 388 [2018-10-24 14:40:11,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:40:11,200 INFO L225 Difference]: With dead ends: 47806 [2018-10-24 14:40:11,201 INFO L226 Difference]: Without dead ends: 35998 [2018-10-24 14:40:11,216 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 390 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:40:11,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35998 states. [2018-10-24 14:40:11,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35998 to 35998. [2018-10-24 14:40:11,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35998 states. [2018-10-24 14:40:11,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35998 states to 35998 states and 41551 transitions. [2018-10-24 14:40:11,699 INFO L78 Accepts]: Start accepts. Automaton has 35998 states and 41551 transitions. Word has length 388 [2018-10-24 14:40:11,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:40:11,700 INFO L481 AbstractCegarLoop]: Abstraction has 35998 states and 41551 transitions. [2018-10-24 14:40:11,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:40:11,701 INFO L276 IsEmpty]: Start isEmpty. Operand 35998 states and 41551 transitions. [2018-10-24 14:40:11,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1010 [2018-10-24 14:40:11,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:40:11,737 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:40:11,737 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:40:11,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:40:11,738 INFO L82 PathProgramCache]: Analyzing trace with hash 141044868, now seen corresponding path program 1 times [2018-10-24 14:40:11,738 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:40:11,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:40:11,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:11,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:11,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:13,617 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 51 proven. 6 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2018-10-24 14:40:13,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:40:13,618 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:40:13,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:13,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:40:14,659 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2018-10-24 14:40:14,680 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:40:14,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 14:40:14,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:40:14,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:40:14,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:40:14,683 INFO L87 Difference]: Start difference. First operand 35998 states and 41551 transitions. Second operand 5 states. [2018-10-24 14:40:20,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:40:20,386 INFO L93 Difference]: Finished difference Result 85123 states and 98829 transitions. [2018-10-24 14:40:20,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:40:20,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1009 [2018-10-24 14:40:20,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:40:20,482 INFO L225 Difference]: With dead ends: 85123 [2018-10-24 14:40:20,482 INFO L226 Difference]: Without dead ends: 49818 [2018-10-24 14:40:20,548 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1011 GetRequests, 1008 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:40:20,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49818 states. [2018-10-24 14:40:21,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49818 to 49818. [2018-10-24 14:40:21,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49818 states. [2018-10-24 14:40:21,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49818 states to 49818 states and 55582 transitions. [2018-10-24 14:40:21,190 INFO L78 Accepts]: Start accepts. Automaton has 49818 states and 55582 transitions. Word has length 1009 [2018-10-24 14:40:21,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:40:21,195 INFO L481 AbstractCegarLoop]: Abstraction has 49818 states and 55582 transitions. [2018-10-24 14:40:21,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:40:21,196 INFO L276 IsEmpty]: Start isEmpty. Operand 49818 states and 55582 transitions. [2018-10-24 14:40:21,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2018-10-24 14:40:21,250 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:40:21,252 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:40:21,252 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:40:21,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:40:21,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1721176543, now seen corresponding path program 1 times [2018-10-24 14:40:21,254 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:40:21,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:40:21,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:21,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:21,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:22,556 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2018-10-24 14:40:22,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:40:22,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:40:22,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:40:22,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:40:22,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:40:22,559 INFO L87 Difference]: Start difference. First operand 49818 states and 55582 transitions. Second operand 3 states. [2018-10-24 14:40:26,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:40:26,193 INFO L93 Difference]: Finished difference Result 98943 states and 110470 transitions. [2018-10-24 14:40:26,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:40:26,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1023 [2018-10-24 14:40:26,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:40:26,255 INFO L225 Difference]: With dead ends: 98943 [2018-10-24 14:40:26,256 INFO L226 Difference]: Without dead ends: 49818 [2018-10-24 14:40:26,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:40:26,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49818 states. [2018-10-24 14:40:26,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49818 to 49818. [2018-10-24 14:40:26,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49818 states. [2018-10-24 14:40:26,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49818 states to 49818 states and 54152 transitions. [2018-10-24 14:40:26,950 INFO L78 Accepts]: Start accepts. Automaton has 49818 states and 54152 transitions. Word has length 1023 [2018-10-24 14:40:26,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:40:26,952 INFO L481 AbstractCegarLoop]: Abstraction has 49818 states and 54152 transitions. [2018-10-24 14:40:26,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:40:26,953 INFO L276 IsEmpty]: Start isEmpty. Operand 49818 states and 54152 transitions. [2018-10-24 14:40:26,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1196 [2018-10-24 14:40:26,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:40:26,995 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:40:26,995 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:40:26,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:40:26,996 INFO L82 PathProgramCache]: Analyzing trace with hash 2056092631, now seen corresponding path program 1 times [2018-10-24 14:40:26,996 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:40:26,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:40:26,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:26,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:26,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:28,143 WARN L179 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-24 14:40:29,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 862 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2018-10-24 14:40:29,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:40:29,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:40:29,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:40:29,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:40:29,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:40:29,160 INFO L87 Difference]: Start difference. First operand 49818 states and 54152 transitions. Second operand 4 states. [2018-10-24 14:40:36,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:40:36,682 INFO L93 Difference]: Finished difference Result 130729 states and 142007 transitions. [2018-10-24 14:40:36,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:40:36,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1195 [2018-10-24 14:40:36,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:40:36,779 INFO L225 Difference]: With dead ends: 130729 [2018-10-24 14:40:36,779 INFO L226 Difference]: Without dead ends: 81604 [2018-10-24 14:40:36,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:40:36,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81604 states. [2018-10-24 14:40:37,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81604 to 78840. [2018-10-24 14:40:37,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78840 states. [2018-10-24 14:40:37,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78840 states to 78840 states and 84682 transitions. [2018-10-24 14:40:37,576 INFO L78 Accepts]: Start accepts. Automaton has 78840 states and 84682 transitions. Word has length 1195 [2018-10-24 14:40:37,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:40:37,577 INFO L481 AbstractCegarLoop]: Abstraction has 78840 states and 84682 transitions. [2018-10-24 14:40:37,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:40:37,578 INFO L276 IsEmpty]: Start isEmpty. Operand 78840 states and 84682 transitions. [2018-10-24 14:40:37,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1215 [2018-10-24 14:40:37,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:40:37,611 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:40:37,611 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:40:37,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:40:37,612 INFO L82 PathProgramCache]: Analyzing trace with hash 560112346, now seen corresponding path program 1 times [2018-10-24 14:40:37,612 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:40:37,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:40:37,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:37,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:37,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:38,395 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 14:40:39,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 948 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2018-10-24 14:40:39,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:40:39,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:40:39,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:40:39,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:40:39,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:40:39,175 INFO L87 Difference]: Start difference. First operand 78840 states and 84682 transitions. Second operand 4 states. [2018-10-24 14:40:44,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:40:44,959 INFO L93 Difference]: Finished difference Result 158368 states and 170085 transitions. [2018-10-24 14:40:44,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:40:44,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1214 [2018-10-24 14:40:44,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:40:45,039 INFO L225 Difference]: With dead ends: 158368 [2018-10-24 14:40:45,039 INFO L226 Difference]: Without dead ends: 80221 [2018-10-24 14:40:45,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:40:45,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80221 states. [2018-10-24 14:40:45,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80221 to 79530. [2018-10-24 14:40:45,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79530 states. [2018-10-24 14:40:45,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79530 states to 79530 states and 84109 transitions. [2018-10-24 14:40:45,724 INFO L78 Accepts]: Start accepts. Automaton has 79530 states and 84109 transitions. Word has length 1214 [2018-10-24 14:40:45,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:40:45,724 INFO L481 AbstractCegarLoop]: Abstraction has 79530 states and 84109 transitions. [2018-10-24 14:40:45,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:40:45,725 INFO L276 IsEmpty]: Start isEmpty. Operand 79530 states and 84109 transitions. [2018-10-24 14:40:45,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1215 [2018-10-24 14:40:45,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:40:45,747 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:40:45,747 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:40:45,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:40:45,748 INFO L82 PathProgramCache]: Analyzing trace with hash -2133527744, now seen corresponding path program 1 times [2018-10-24 14:40:45,748 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:40:45,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:40:45,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:45,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:45,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 447 proven. 678 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-10-24 14:40:49,158 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:40:49,159 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:40:49,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:49,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:40:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 637 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2018-10-24 14:40:50,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:40:50,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2018-10-24 14:40:50,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 14:40:50,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 14:40:50,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-24 14:40:50,494 INFO L87 Difference]: Start difference. First operand 79530 states and 84109 transitions. Second operand 10 states. [2018-10-24 14:41:15,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:41:15,361 INFO L93 Difference]: Finished difference Result 309776 states and 329297 transitions. [2018-10-24 14:41:15,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-24 14:41:15,365 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1214 [2018-10-24 14:41:15,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:41:15,632 INFO L225 Difference]: With dead ends: 309776 [2018-10-24 14:41:15,632 INFO L226 Difference]: Without dead ends: 187935 [2018-10-24 14:41:15,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1248 GetRequests, 1226 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2018-10-24 14:41:15,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187935 states. [2018-10-24 14:41:17,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187935 to 78109. [2018-10-24 14:41:17,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78109 states. [2018-10-24 14:41:17,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78109 states to 78109 states and 80857 transitions. [2018-10-24 14:41:17,197 INFO L78 Accepts]: Start accepts. Automaton has 78109 states and 80857 transitions. Word has length 1214 [2018-10-24 14:41:17,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:41:17,199 INFO L481 AbstractCegarLoop]: Abstraction has 78109 states and 80857 transitions. [2018-10-24 14:41:17,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 14:41:17,199 INFO L276 IsEmpty]: Start isEmpty. Operand 78109 states and 80857 transitions. [2018-10-24 14:41:17,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1477 [2018-10-24 14:41:17,242 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:41:17,243 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:41:17,243 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:41:17,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:41:17,244 INFO L82 PathProgramCache]: Analyzing trace with hash 579603313, now seen corresponding path program 1 times [2018-10-24 14:41:17,244 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:41:17,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:41:17,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:17,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:17,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2036 backedges. 1348 proven. 0 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2018-10-24 14:41:19,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:41:19,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:41:19,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:41:19,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:41:19,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:19,568 INFO L87 Difference]: Start difference. First operand 78109 states and 80857 transitions. Second operand 4 states. [2018-10-24 14:41:24,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:41:24,006 INFO L93 Difference]: Finished difference Result 165888 states and 172052 transitions. [2018-10-24 14:41:24,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:41:24,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1476 [2018-10-24 14:41:24,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:41:24,100 INFO L225 Difference]: With dead ends: 165888 [2018-10-24 14:41:24,100 INFO L226 Difference]: Without dead ends: 88472 [2018-10-24 14:41:24,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:24,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88472 states. [2018-10-24 14:41:24,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88472 to 87781. [2018-10-24 14:41:24,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87781 states. [2018-10-24 14:41:24,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87781 states to 87781 states and 90700 transitions. [2018-10-24 14:41:24,938 INFO L78 Accepts]: Start accepts. Automaton has 87781 states and 90700 transitions. Word has length 1476 [2018-10-24 14:41:24,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:41:24,939 INFO L481 AbstractCegarLoop]: Abstraction has 87781 states and 90700 transitions. [2018-10-24 14:41:24,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:41:24,939 INFO L276 IsEmpty]: Start isEmpty. Operand 87781 states and 90700 transitions. [2018-10-24 14:41:24,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1576 [2018-10-24 14:41:24,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:41:24,983 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:41:24,983 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:41:24,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:41:24,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1856553544, now seen corresponding path program 1 times [2018-10-24 14:41:24,984 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:41:24,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:41:24,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:24,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:24,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:26,125 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-24 14:41:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2470 backedges. 1781 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2018-10-24 14:41:27,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:41:27,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 14:41:27,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:41:27,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:41:27,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:41:27,883 INFO L87 Difference]: Start difference. First operand 87781 states and 90700 transitions. Second operand 6 states. [2018-10-24 14:41:36,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:41:36,445 INFO L93 Difference]: Finished difference Result 185384 states and 191356 transitions. [2018-10-24 14:41:36,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:41:36,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1575 [2018-10-24 14:41:36,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:41:36,543 INFO L225 Difference]: With dead ends: 185384 [2018-10-24 14:41:36,543 INFO L226 Difference]: Without dead ends: 98296 [2018-10-24 14:41:36,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:41:36,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98296 states. [2018-10-24 14:41:37,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98296 to 88890. [2018-10-24 14:41:37,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88890 states. [2018-10-24 14:41:37,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88890 states to 88890 states and 91669 transitions. [2018-10-24 14:41:37,450 INFO L78 Accepts]: Start accepts. Automaton has 88890 states and 91669 transitions. Word has length 1575 [2018-10-24 14:41:37,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:41:37,451 INFO L481 AbstractCegarLoop]: Abstraction has 88890 states and 91669 transitions. [2018-10-24 14:41:37,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:41:37,451 INFO L276 IsEmpty]: Start isEmpty. Operand 88890 states and 91669 transitions. [2018-10-24 14:41:37,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1609 [2018-10-24 14:41:37,498 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:41:37,499 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:41:37,499 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:41:37,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:41:37,500 INFO L82 PathProgramCache]: Analyzing trace with hash -627640212, now seen corresponding path program 1 times [2018-10-24 14:41:37,500 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:41:37,500 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:41:37,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:37,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:37,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:38,723 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:41:39,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 2459 trivial. 0 not checked. [2018-10-24 14:41:39,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:41:39,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:41:39,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:41:39,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:41:39,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:39,967 INFO L87 Difference]: Start difference. First operand 88890 states and 91669 transitions. Second operand 4 states. [2018-10-24 14:41:44,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:41:44,734 INFO L93 Difference]: Finished difference Result 176393 states and 181950 transitions. [2018-10-24 14:41:44,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:41:44,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1608 [2018-10-24 14:41:44,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:41:44,838 INFO L225 Difference]: With dead ends: 176393 [2018-10-24 14:41:44,838 INFO L226 Difference]: Without dead ends: 86121 [2018-10-24 14:41:44,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86121 states. [2018-10-24 14:41:45,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86121 to 85430. [2018-10-24 14:41:45,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85430 states. [2018-10-24 14:41:45,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85430 states to 85430 states and 87793 transitions. [2018-10-24 14:41:45,739 INFO L78 Accepts]: Start accepts. Automaton has 85430 states and 87793 transitions. Word has length 1608 [2018-10-24 14:41:45,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:41:45,740 INFO L481 AbstractCegarLoop]: Abstraction has 85430 states and 87793 transitions. [2018-10-24 14:41:45,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:41:45,740 INFO L276 IsEmpty]: Start isEmpty. Operand 85430 states and 87793 transitions. [2018-10-24 14:41:45,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1636 [2018-10-24 14:41:45,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:41:45,789 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:41:45,789 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:41:45,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:41:45,790 INFO L82 PathProgramCache]: Analyzing trace with hash -604763930, now seen corresponding path program 1 times [2018-10-24 14:41:45,790 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:41:45,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:41:45,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:45,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:45,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2557 backedges. 1966 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2018-10-24 14:41:48,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:41:48,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:41:48,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:41:48,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:41:48,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:48,339 INFO L87 Difference]: Start difference. First operand 85430 states and 87793 transitions. Second operand 4 states. [2018-10-24 14:41:52,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:41:52,472 INFO L93 Difference]: Finished difference Result 180673 states and 185697 transitions. [2018-10-24 14:41:52,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:41:52,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1635 [2018-10-24 14:41:52,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:41:52,564 INFO L225 Difference]: With dead ends: 180673 [2018-10-24 14:41:52,565 INFO L226 Difference]: Without dead ends: 95936 [2018-10-24 14:41:52,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:52,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95936 states. [2018-10-24 14:41:53,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95936 to 92481. [2018-10-24 14:41:53,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92481 states. [2018-10-24 14:41:53,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92481 states to 92481 states and 94894 transitions. [2018-10-24 14:41:53,718 INFO L78 Accepts]: Start accepts. Automaton has 92481 states and 94894 transitions. Word has length 1635 [2018-10-24 14:41:53,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:41:53,719 INFO L481 AbstractCegarLoop]: Abstraction has 92481 states and 94894 transitions. [2018-10-24 14:41:53,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:41:53,719 INFO L276 IsEmpty]: Start isEmpty. Operand 92481 states and 94894 transitions. [2018-10-24 14:41:53,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1762 [2018-10-24 14:41:53,768 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:41:53,769 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:41:53,769 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:41:53,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:41:53,770 INFO L82 PathProgramCache]: Analyzing trace with hash 710325529, now seen corresponding path program 1 times [2018-10-24 14:41:53,770 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:41:53,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:41:53,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:53,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:53,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 2306 proven. 0 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2018-10-24 14:41:56,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:41:56,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:41:56,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:41:56,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:41:56,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:56,203 INFO L87 Difference]: Start difference. First operand 92481 states and 94894 transitions. Second operand 4 states. [2018-10-24 14:42:01,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:42:01,363 INFO L93 Difference]: Finished difference Result 211216 states and 217012 transitions. [2018-10-24 14:42:01,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:42:01,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1761 [2018-10-24 14:42:01,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:42:01,487 INFO L225 Difference]: With dead ends: 211216 [2018-10-24 14:42:01,487 INFO L226 Difference]: Without dead ends: 119428 [2018-10-24 14:42:01,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:42:01,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119428 states. [2018-10-24 14:42:02,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119428 to 98006. [2018-10-24 14:42:02,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98006 states. [2018-10-24 14:42:02,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98006 states to 98006 states and 100417 transitions. [2018-10-24 14:42:02,378 INFO L78 Accepts]: Start accepts. Automaton has 98006 states and 100417 transitions. Word has length 1761 [2018-10-24 14:42:02,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:42:02,379 INFO L481 AbstractCegarLoop]: Abstraction has 98006 states and 100417 transitions. [2018-10-24 14:42:02,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:42:02,379 INFO L276 IsEmpty]: Start isEmpty. Operand 98006 states and 100417 transitions. [2018-10-24 14:42:02,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1797 [2018-10-24 14:42:02,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:42:02,419 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:42:02,419 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:42:02,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:42:02,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2099010267, now seen corresponding path program 1 times [2018-10-24 14:42:02,420 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:42:02,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:42:02,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:02,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:02,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3420 backedges. 2615 proven. 108 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2018-10-24 14:42:05,136 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:42:05,136 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:42:05,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:05,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:42:10,026 WARN L179 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 1877 DAG size of output: 26 [2018-10-24 14:42:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3420 backedges. 2413 proven. 93 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2018-10-24 14:42:12,672 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:42:12,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-10-24 14:42:12,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:42:12,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:42:12,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:42:12,675 INFO L87 Difference]: Start difference. First operand 98006 states and 100417 transitions. Second operand 7 states. [2018-10-24 14:42:40,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:42:40,472 INFO L93 Difference]: Finished difference Result 208944 states and 214249 transitions. [2018-10-24 14:42:40,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 14:42:40,474 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1796 [2018-10-24 14:42:40,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:42:40,596 INFO L225 Difference]: With dead ends: 208944 [2018-10-24 14:42:40,596 INFO L226 Difference]: Without dead ends: 111631 [2018-10-24 14:42:40,631 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1804 GetRequests, 1797 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:42:40,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111631 states. [2018-10-24 14:42:41,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111631 to 106528. [2018-10-24 14:42:41,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106528 states. [2018-10-24 14:42:41,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106528 states to 106528 states and 108736 transitions. [2018-10-24 14:42:41,656 INFO L78 Accepts]: Start accepts. Automaton has 106528 states and 108736 transitions. Word has length 1796 [2018-10-24 14:42:41,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:42:41,657 INFO L481 AbstractCegarLoop]: Abstraction has 106528 states and 108736 transitions. [2018-10-24 14:42:41,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:42:41,657 INFO L276 IsEmpty]: Start isEmpty. Operand 106528 states and 108736 transitions. [2018-10-24 14:42:41,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1826 [2018-10-24 14:42:41,705 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:42:41,706 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:42:41,706 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:42:41,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:42:41,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1391706655, now seen corresponding path program 1 times [2018-10-24 14:42:41,707 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:42:41,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:42:41,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:41,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:41,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3405 backedges. 2639 proven. 69 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2018-10-24 14:42:44,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:42:44,929 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:42:44,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:45,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-24 14:42:51,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3405 backedges. 1730 proven. 93 refuted. 0 times theorem prover too weak. 1582 trivial. 0 not checked. [2018-10-24 14:42:51,131 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:42:51,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-10-24 14:42:51,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:42:51,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:42:51,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:42:51,134 INFO L87 Difference]: Start difference. First operand 106528 states and 108736 transitions. Second operand 7 states. [2018-10-24 14:42:51,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 14:42:51,135 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:42:51,140 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:42:51,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:42:51 BoogieIcfgContainer [2018-10-24 14:42:51,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:42:51,142 INFO L168 Benchmark]: Toolchain (without parser) took 227706.24 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 14:42:51,143 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:42:51,144 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1819.08 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: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. [2018-10-24 14:42:51,144 INFO L168 Benchmark]: Boogie Procedure Inliner took 507.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 772.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -935.7 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:42:51,146 INFO L168 Benchmark]: Boogie Preprocessor took 259.55 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: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:42:51,147 INFO L168 Benchmark]: RCFGBuilder took 7126.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 532.8 MB). Peak memory consumption was 532.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:42:51,148 INFO L168 Benchmark]: TraceAbstraction took 217986.72 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.6 GB in the beginning and 2.5 GB in the end (delta: -851.5 MB). Peak memory consumption was 865.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:42:51,153 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1819.08 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: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 507.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 772.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -935.7 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 259.55 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: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7126.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 532.8 MB). Peak memory consumption was 532.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217986.72 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.6 GB in the beginning and 2.5 GB in the end (delta: -851.5 MB). Peak memory consumption was 865.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 51). Cancelled while BasicCegarLoop was constructing difference of abstraction (106528states) and FLOYD_HOARE automaton (currently 2 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 217.9s OverallTime, 17 OverallIterations, 8 TraceHistogramMax, 157.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9484 SDtfs, 40828 SDslu, 1946 SDs, 0 SdLazy, 91109 SolverSat, 14058 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 125.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6733 GetRequests, 6648 SyntacticMatches, 14 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106528occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 10.9s AutomataMinimizationTime, 16 MinimizatonAttempts, 158916 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 27.5s InterpolantComputationTime, 25013 NumberOfCodeBlocks, 25013 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 24990 ConstructedInterpolants, 582 QuantifiedInterpolants, 91649491 SizeOfPredicates, 1 NumberOfNonLiveVariables, 7626 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 23 InterpolantComputations, 15 PerfectInterpolantSequences, 33895/34954 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown