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_label39_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:45:00,107 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:45:00,109 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:45:00,126 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:45:00,126 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:45:00,127 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:45:00,129 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:45:00,131 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:45:00,133 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:45:00,136 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:45:00,137 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:45:00,137 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:45:00,138 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:45:00,139 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:45:00,140 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:45:00,141 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:45:00,142 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:45:00,144 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:45:00,145 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:45:00,147 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:45:00,148 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:45:00,149 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:45:00,152 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:45:00,152 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:45:00,152 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:45:00,153 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:45:00,154 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:45:00,155 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:45:00,156 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:45:00,157 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:45:00,157 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:45:00,158 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:45:00,161 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 19:45:00,176 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:45:00,176 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:45:00,177 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:45:00,177 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:45:00,178 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:45:00,178 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:45:00,178 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:45:00,178 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:45:00,179 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:45:00,179 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:45:00,179 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:45:00,179 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:45:00,179 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:45:00,180 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:45:00,180 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:45:00,180 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:45:00,180 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:45:00,180 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:45:00,181 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:45:00,181 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:45:00,181 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:45:00,181 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:45:00,181 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:45:00,182 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:45:00,182 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:45:00,182 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:45:00,182 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:45:00,182 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:45:00,240 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:45:00,257 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:45:00,261 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:45:00,263 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:45:00,263 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:45:00,264 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label39_false-unreach-call.c [2018-10-26 19:45:00,329 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/faa690dfc/16e8e99c9f4f4d82b87932c28fa53967/FLAG2d7ddc35e [2018-10-26 19:45:01,065 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:45:01,066 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label39_false-unreach-call.c [2018-10-26 19:45:01,092 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/faa690dfc/16e8e99c9f4f4d82b87932c28fa53967/FLAG2d7ddc35e [2018-10-26 19:45:01,109 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/faa690dfc/16e8e99c9f4f4d82b87932c28fa53967 [2018-10-26 19:45:01,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:45:01,123 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:45:01,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:45:01,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:45:01,129 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:45:01,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:45:01" (1/1) ... [2018-10-26 19:45:01,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379aca2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:01, skipping insertion in model container [2018-10-26 19:45:01,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:45:01" (1/1) ... [2018-10-26 19:45:01,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:45:01,291 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:45:02,400 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:45:02,406 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:45:02,930 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:45:02,959 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:45:02,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:02 WrapperNode [2018-10-26 19:45:02,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:45:02,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:45:02,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:45:02,961 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:45:02,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:02" (1/1) ... [2018-10-26 19:45:03,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:02" (1/1) ... [2018-10-26 19:45:03,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:45:03,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:45:03,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:45:03,455 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:45:03,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:02" (1/1) ... [2018-10-26 19:45:03,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:02" (1/1) ... [2018-10-26 19:45:03,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:02" (1/1) ... [2018-10-26 19:45:03,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:02" (1/1) ... [2018-10-26 19:45:03,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:02" (1/1) ... [2018-10-26 19:45:03,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:02" (1/1) ... [2018-10-26 19:45:03,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:02" (1/1) ... [2018-10-26 19:45:03,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:45:03,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:45:03,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:45:03,719 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:45:03,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:45:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:45:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:45:03,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:45:10,779 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:45:10,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:45:10 BoogieIcfgContainer [2018-10-26 19:45:10,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:45:10,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:45:10,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:45:10,786 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:45:10,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:45:01" (1/3) ... [2018-10-26 19:45:10,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2186b7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:45:10, skipping insertion in model container [2018-10-26 19:45:10,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:45:02" (2/3) ... [2018-10-26 19:45:10,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2186b7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:45:10, skipping insertion in model container [2018-10-26 19:45:10,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:45:10" (3/3) ... [2018-10-26 19:45:10,790 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label39_false-unreach-call.c [2018-10-26 19:45:10,801 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:45:10,812 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:45:10,830 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:45:10,883 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:45:10,884 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:45:10,884 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:45:10,884 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:45:10,884 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:45:10,884 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:45:10,885 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:45:10,885 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:45:10,885 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:45:10,925 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-26 19:45:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-26 19:45:10,933 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:10,934 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:45:10,937 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:10,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:10,943 INFO L82 PathProgramCache]: Analyzing trace with hash 340357962, now seen corresponding path program 1 times [2018-10-26 19:45:10,945 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:10,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:11,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:11,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:11,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:11,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:45:11,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:45:11,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:45:11,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:45:11,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:45:11,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:11,466 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-10-26 19:45:23,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:45:23,837 INFO L93 Difference]: Finished difference Result 2902 states and 5650 transitions. [2018-10-26 19:45:23,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:45:23,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-10-26 19:45:23,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:45:23,879 INFO L225 Difference]: With dead ends: 2902 [2018-10-26 19:45:23,879 INFO L226 Difference]: Without dead ends: 2137 [2018-10-26 19:45:23,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:23,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2018-10-26 19:45:24,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2137. [2018-10-26 19:45:24,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2137 states. [2018-10-26 19:45:24,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3733 transitions. [2018-10-26 19:45:24,045 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3733 transitions. Word has length 14 [2018-10-26 19:45:24,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:24,046 INFO L481 AbstractCegarLoop]: Abstraction has 2137 states and 3733 transitions. [2018-10-26 19:45:24,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:45:24,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3733 transitions. [2018-10-26 19:45:24,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-26 19:45:24,050 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:24,050 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:45:24,051 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:24,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:24,051 INFO L82 PathProgramCache]: Analyzing trace with hash 743551834, now seen corresponding path program 1 times [2018-10-26 19:45:24,051 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:24,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:24,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:24,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:24,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:45:24,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:45:24,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:45:24,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:45:24,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:45:24,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:24,450 INFO L87 Difference]: Start difference. First operand 2137 states and 3733 transitions. Second operand 4 states. [2018-10-26 19:45:32,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:45:32,229 INFO L93 Difference]: Finished difference Result 6345 states and 11134 transitions. [2018-10-26 19:45:32,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:45:32,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2018-10-26 19:45:32,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:45:32,254 INFO L225 Difference]: With dead ends: 6345 [2018-10-26 19:45:32,254 INFO L226 Difference]: Without dead ends: 4210 [2018-10-26 19:45:32,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:32,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2018-10-26 19:45:32,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 4210. [2018-10-26 19:45:32,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4210 states. [2018-10-26 19:45:32,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4210 states to 4210 states and 6185 transitions. [2018-10-26 19:45:32,355 INFO L78 Accepts]: Start accepts. Automaton has 4210 states and 6185 transitions. Word has length 80 [2018-10-26 19:45:32,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:32,356 INFO L481 AbstractCegarLoop]: Abstraction has 4210 states and 6185 transitions. [2018-10-26 19:45:32,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:45:32,356 INFO L276 IsEmpty]: Start isEmpty. Operand 4210 states and 6185 transitions. [2018-10-26 19:45:32,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-26 19:45:32,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:32,361 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:45:32,364 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:32,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:32,364 INFO L82 PathProgramCache]: Analyzing trace with hash 662698863, now seen corresponding path program 1 times [2018-10-26 19:45:32,365 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:32,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:32,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:32,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:32,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:45:32,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:45:32,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:45:32,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:45:32,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:45:32,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:32,582 INFO L87 Difference]: Start difference. First operand 4210 states and 6185 transitions. Second operand 4 states. [2018-10-26 19:45:40,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:45:40,083 INFO L93 Difference]: Finished difference Result 16727 states and 24628 transitions. [2018-10-26 19:45:40,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:45:40,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2018-10-26 19:45:40,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:45:40,144 INFO L225 Difference]: With dead ends: 16727 [2018-10-26 19:45:40,144 INFO L226 Difference]: Without dead ends: 12519 [2018-10-26 19:45:40,153 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:40,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12519 states. [2018-10-26 19:45:40,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12519 to 8356. [2018-10-26 19:45:40,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8356 states. [2018-10-26 19:45:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8356 states to 8356 states and 10927 transitions. [2018-10-26 19:45:40,354 INFO L78 Accepts]: Start accepts. Automaton has 8356 states and 10927 transitions. Word has length 83 [2018-10-26 19:45:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:40,355 INFO L481 AbstractCegarLoop]: Abstraction has 8356 states and 10927 transitions. [2018-10-26 19:45:40,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:45:40,356 INFO L276 IsEmpty]: Start isEmpty. Operand 8356 states and 10927 transitions. [2018-10-26 19:45:40,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-26 19:45:40,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:40,360 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:45:40,360 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:40,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:40,363 INFO L82 PathProgramCache]: Analyzing trace with hash -2023094700, now seen corresponding path program 1 times [2018-10-26 19:45:40,363 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:40,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:40,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:40,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:40,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:40,729 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:45:40,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:45:40,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:45:40,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:45:40,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:45:40,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:40,732 INFO L87 Difference]: Start difference. First operand 8356 states and 10927 transitions. Second operand 4 states. [2018-10-26 19:45:47,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:45:47,384 INFO L93 Difference]: Finished difference Result 32603 states and 42820 transitions. [2018-10-26 19:45:47,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:45:47,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2018-10-26 19:45:47,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:45:47,448 INFO L225 Difference]: With dead ends: 32603 [2018-10-26 19:45:47,448 INFO L226 Difference]: Without dead ends: 20083 [2018-10-26 19:45:47,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:47,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20083 states. [2018-10-26 19:45:47,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20083 to 20083. [2018-10-26 19:45:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20083 states. [2018-10-26 19:45:47,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20083 states to 20083 states and 22439 transitions. [2018-10-26 19:45:47,741 INFO L78 Accepts]: Start accepts. Automaton has 20083 states and 22439 transitions. Word has length 108 [2018-10-26 19:45:47,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:47,742 INFO L481 AbstractCegarLoop]: Abstraction has 20083 states and 22439 transitions. [2018-10-26 19:45:47,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:45:47,742 INFO L276 IsEmpty]: Start isEmpty. Operand 20083 states and 22439 transitions. [2018-10-26 19:45:47,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-10-26 19:45:47,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:47,755 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-26 19:45:47,756 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:47,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:47,756 INFO L82 PathProgramCache]: Analyzing trace with hash 150843197, now seen corresponding path program 1 times [2018-10-26 19:45:47,756 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:47,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:47,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:47,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:47,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:48,741 WARN L179 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2018-10-26 19:45:48,977 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 11 [2018-10-26 19:45:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-10-26 19:45:49,303 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:45:49,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:45:49,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:45:49,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:45:49,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:45:49,305 INFO L87 Difference]: Start difference. First operand 20083 states and 22439 transitions. Second operand 5 states. [2018-10-26 19:45:55,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:45:55,382 INFO L93 Difference]: Finished difference Result 47074 states and 52335 transitions. [2018-10-26 19:45:55,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:45:55,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 368 [2018-10-26 19:45:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:45:55,431 INFO L225 Difference]: With dead ends: 47074 [2018-10-26 19:45:55,431 INFO L226 Difference]: Without dead ends: 26993 [2018-10-26 19:45:55,454 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:45:55,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26993 states. [2018-10-26 19:45:55,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26993 to 25611. [2018-10-26 19:45:55,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25611 states. [2018-10-26 19:45:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25611 states to 25611 states and 28083 transitions. [2018-10-26 19:45:55,762 INFO L78 Accepts]: Start accepts. Automaton has 25611 states and 28083 transitions. Word has length 368 [2018-10-26 19:45:55,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:55,762 INFO L481 AbstractCegarLoop]: Abstraction has 25611 states and 28083 transitions. [2018-10-26 19:45:55,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:45:55,763 INFO L276 IsEmpty]: Start isEmpty. Operand 25611 states and 28083 transitions. [2018-10-26 19:45:55,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1105 [2018-10-26 19:45:55,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:55,820 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:45:55,821 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:55,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:55,821 INFO L82 PathProgramCache]: Analyzing trace with hash 2141634323, now seen corresponding path program 1 times [2018-10-26 19:45:55,822 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:55,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:55,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:55,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:55,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1114 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2018-10-26 19:45:57,432 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:45:57,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:45:57,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:45:57,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:45:57,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:57,434 INFO L87 Difference]: Start difference. First operand 25611 states and 28083 transitions. Second operand 4 states. [2018-10-26 19:46:03,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:46:03,219 INFO L93 Difference]: Finished difference Result 72651 states and 81328 transitions. [2018-10-26 19:46:03,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:46:03,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1104 [2018-10-26 19:46:03,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:46:03,295 INFO L225 Difference]: With dead ends: 72651 [2018-10-26 19:46:03,296 INFO L226 Difference]: Without dead ends: 47733 [2018-10-26 19:46:03,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:46:03,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47733 states. [2018-10-26 19:46:03,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47733 to 47733. [2018-10-26 19:46:03,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47733 states. [2018-10-26 19:46:03,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47733 states to 47733 states and 51776 transitions. [2018-10-26 19:46:03,873 INFO L78 Accepts]: Start accepts. Automaton has 47733 states and 51776 transitions. Word has length 1104 [2018-10-26 19:46:03,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:46:03,875 INFO L481 AbstractCegarLoop]: Abstraction has 47733 states and 51776 transitions. [2018-10-26 19:46:03,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:46:03,875 INFO L276 IsEmpty]: Start isEmpty. Operand 47733 states and 51776 transitions. [2018-10-26 19:46:03,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1119 [2018-10-26 19:46:03,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:46:03,936 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:46:03,937 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:46:03,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:46:03,939 INFO L82 PathProgramCache]: Analyzing trace with hash -272164074, now seen corresponding path program 1 times [2018-10-26 19:46:03,939 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:46:03,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:46:03,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:03,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:46:03,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:46:04,863 WARN L179 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-26 19:46:05,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2018-10-26 19:46:05,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:46:05,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:46:05,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:46:05,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:46:05,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:46:05,993 INFO L87 Difference]: Start difference. First operand 47733 states and 51776 transitions. Second operand 4 states. [2018-10-26 19:46:13,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:46:13,121 INFO L93 Difference]: Finished difference Result 128632 states and 139923 transitions. [2018-10-26 19:46:13,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:46:13,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1118 [2018-10-26 19:46:13,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:46:13,280 INFO L225 Difference]: With dead ends: 128632 [2018-10-26 19:46:13,280 INFO L226 Difference]: Without dead ends: 81592 [2018-10-26 19:46:13,329 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:46:13,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81592 states. [2018-10-26 19:46:14,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81592 to 79519. [2018-10-26 19:46:14,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79519 states. [2018-10-26 19:46:14,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79519 states to 79519 states and 85159 transitions. [2018-10-26 19:46:14,451 INFO L78 Accepts]: Start accepts. Automaton has 79519 states and 85159 transitions. Word has length 1118 [2018-10-26 19:46:14,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:46:14,453 INFO L481 AbstractCegarLoop]: Abstraction has 79519 states and 85159 transitions. [2018-10-26 19:46:14,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:46:14,453 INFO L276 IsEmpty]: Start isEmpty. Operand 79519 states and 85159 transitions. [2018-10-26 19:46:14,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1297 [2018-10-26 19:46:14,506 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:46:14,508 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:46:14,508 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:46:14,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:46:14,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1711964959, now seen corresponding path program 1 times [2018-10-26 19:46:14,509 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:46:14,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:46:14,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:14,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:46:14,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:46:18,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2074 backedges. 955 proven. 901 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-10-26 19:46:18,974 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:46:18,974 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:46:18,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:46:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:46:19,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:46:20,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2074 backedges. 1110 proven. 0 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked. [2018-10-26 19:46:20,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:46:20,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-10-26 19:46:20,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 19:46:20,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 19:46:20,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-26 19:46:20,208 INFO L87 Difference]: Start difference. First operand 79519 states and 85159 transitions. Second operand 12 states. [2018-10-26 19:46:42,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:46:42,129 INFO L93 Difference]: Finished difference Result 219014 states and 237115 transitions. [2018-10-26 19:46:42,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-26 19:46:42,130 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1296 [2018-10-26 19:46:42,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:46:42,391 INFO L225 Difference]: With dead ends: 219014 [2018-10-26 19:46:42,391 INFO L226 Difference]: Without dead ends: 140188 [2018-10-26 19:46:42,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1339 GetRequests, 1309 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2018-10-26 19:46:42,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140188 states. [2018-10-26 19:46:44,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140188 to 96789. [2018-10-26 19:46:44,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96789 states. [2018-10-26 19:46:44,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96789 states to 96789 states and 102779 transitions. [2018-10-26 19:46:44,501 INFO L78 Accepts]: Start accepts. Automaton has 96789 states and 102779 transitions. Word has length 1296 [2018-10-26 19:46:44,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:46:44,503 INFO L481 AbstractCegarLoop]: Abstraction has 96789 states and 102779 transitions. [2018-10-26 19:46:44,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-26 19:46:44,503 INFO L276 IsEmpty]: Start isEmpty. Operand 96789 states and 102779 transitions. [2018-10-26 19:46:44,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1350 [2018-10-26 19:46:44,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:46:44,568 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:46:44,568 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:46:44,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:46:44,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1463033272, now seen corresponding path program 1 times [2018-10-26 19:46:44,569 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:46:44,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:46:44,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:44,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:46:44,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:46:47,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1965 backedges. 1083 proven. 6 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2018-10-26 19:46:47,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:46:47,617 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:46:47,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:46:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:46:47,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:46:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1965 backedges. 1083 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2018-10-26 19:46:49,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:46:49,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-26 19:46:49,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:46:49,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:46:49,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:46:49,451 INFO L87 Difference]: Start difference. First operand 96789 states and 102779 transitions. Second operand 5 states. [2018-10-26 19:46:55,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:46:55,125 INFO L93 Difference]: Finished difference Result 214305 states and 227844 transitions. [2018-10-26 19:46:55,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:46:55,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1349 [2018-10-26 19:46:55,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:46:55,311 INFO L225 Difference]: With dead ends: 214305 [2018-10-26 19:46:55,311 INFO L226 Difference]: Without dead ends: 118209 [2018-10-26 19:46:55,401 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1351 GetRequests, 1348 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:46:55,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118209 states. [2018-10-26 19:46:56,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118209 to 115445. [2018-10-26 19:46:56,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115445 states. [2018-10-26 19:46:56,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115445 states to 115445 states and 121622 transitions. [2018-10-26 19:46:56,613 INFO L78 Accepts]: Start accepts. Automaton has 115445 states and 121622 transitions. Word has length 1349 [2018-10-26 19:46:56,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:46:56,615 INFO L481 AbstractCegarLoop]: Abstraction has 115445 states and 121622 transitions. [2018-10-26 19:46:56,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:46:56,615 INFO L276 IsEmpty]: Start isEmpty. Operand 115445 states and 121622 transitions. [2018-10-26 19:46:56,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1370 [2018-10-26 19:46:56,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:46:56,660 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:46:56,661 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:46:56,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:46:56,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1977725816, now seen corresponding path program 1 times [2018-10-26 19:46:56,662 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:46:56,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:46:56,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:56,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:46:56,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:46:57,623 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-26 19:46:58,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2023 backedges. 1434 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2018-10-26 19:46:58,986 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:46:58,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:46:58,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:46:58,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:46:58,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:46:58,988 INFO L87 Difference]: Start difference. First operand 115445 states and 121622 transitions. Second operand 4 states. [2018-10-26 19:47:05,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:47:05,063 INFO L93 Difference]: Finished difference Result 235035 states and 247542 transitions. [2018-10-26 19:47:05,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:47:05,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1369 [2018-10-26 19:47:05,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:47:05,192 INFO L225 Difference]: With dead ends: 235035 [2018-10-26 19:47:05,192 INFO L226 Difference]: Without dead ends: 120283 [2018-10-26 19:47:05,253 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:47:05,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120283 states. [2018-10-26 19:47:06,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120283 to 116827. [2018-10-26 19:47:06,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116827 states. [2018-10-26 19:47:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116827 states to 116827 states and 122821 transitions. [2018-10-26 19:47:06,243 INFO L78 Accepts]: Start accepts. Automaton has 116827 states and 122821 transitions. Word has length 1369 [2018-10-26 19:47:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:47:06,245 INFO L481 AbstractCegarLoop]: Abstraction has 116827 states and 122821 transitions. [2018-10-26 19:47:06,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:47:06,245 INFO L276 IsEmpty]: Start isEmpty. Operand 116827 states and 122821 transitions. [2018-10-26 19:47:06,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1391 [2018-10-26 19:47:06,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:47:06,278 INFO L375 BasicCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:47:06,279 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:47:06,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:47:06,279 INFO L82 PathProgramCache]: Analyzing trace with hash 244766463, now seen corresponding path program 1 times [2018-10-26 19:47:06,279 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:47:06,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:47:06,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:06,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:47:06,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:47:06,991 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-26 19:47:07,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 1461 proven. 0 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-10-26 19:47:07,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:47:07,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:47:07,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:47:08,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:47:08,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:47:08,000 INFO L87 Difference]: Start difference. First operand 116827 states and 122821 transitions. Second operand 4 states. [2018-10-26 19:47:13,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:47:13,634 INFO L93 Difference]: Finished difference Result 237798 states and 249840 transitions. [2018-10-26 19:47:13,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:47:13,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1390 [2018-10-26 19:47:13,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:47:13,771 INFO L225 Difference]: With dead ends: 237798 [2018-10-26 19:47:13,771 INFO L226 Difference]: Without dead ends: 121664 [2018-10-26 19:47:13,811 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 [2018-10-26 19:47:13,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121664 states. [2018-10-26 19:47:14,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121664 to 120282. [2018-10-26 19:47:14,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120282 states. [2018-10-26 19:47:14,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120282 states to 120282 states and 125284 transitions. [2018-10-26 19:47:14,801 INFO L78 Accepts]: Start accepts. Automaton has 120282 states and 125284 transitions. Word has length 1390 [2018-10-26 19:47:14,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:47:14,802 INFO L481 AbstractCegarLoop]: Abstraction has 120282 states and 125284 transitions. [2018-10-26 19:47:14,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:47:14,802 INFO L276 IsEmpty]: Start isEmpty. Operand 120282 states and 125284 transitions. [2018-10-26 19:47:14,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1496 [2018-10-26 19:47:14,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:47:14,846 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:47:14,846 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:47:14,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:47:14,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1970607365, now seen corresponding path program 1 times [2018-10-26 19:47:14,847 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:47:14,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:47:14,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:14,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:47:14,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:47:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 1665 proven. 0 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2018-10-26 19:47:17,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:47:17,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:47:17,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:47:17,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:47:17,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:47:17,038 INFO L87 Difference]: Start difference. First operand 120282 states and 125284 transitions. Second operand 4 states. [2018-10-26 19:47:23,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:47:23,527 INFO L93 Difference]: Finished difference Result 259225 states and 270401 transitions. [2018-10-26 19:47:23,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:47:23,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1495 [2018-10-26 19:47:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:47:23,712 INFO L225 Difference]: With dead ends: 259225 [2018-10-26 19:47:23,713 INFO L226 Difference]: Without dead ends: 139636 [2018-10-26 19:47:23,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:47:23,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139636 states. [2018-10-26 19:47:24,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139636 to 126501. [2018-10-26 19:47:24,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126501 states. [2018-10-26 19:47:24,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126501 states to 126501 states and 131667 transitions. [2018-10-26 19:47:24,982 INFO L78 Accepts]: Start accepts. Automaton has 126501 states and 131667 transitions. Word has length 1495 [2018-10-26 19:47:24,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:47:24,983 INFO L481 AbstractCegarLoop]: Abstraction has 126501 states and 131667 transitions. [2018-10-26 19:47:24,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:47:24,983 INFO L276 IsEmpty]: Start isEmpty. Operand 126501 states and 131667 transitions. [2018-10-26 19:47:25,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1531 [2018-10-26 19:47:25,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:47:25,031 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:47:25,031 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:47:25,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:47:25,032 INFO L82 PathProgramCache]: Analyzing trace with hash 163826486, now seen corresponding path program 1 times [2018-10-26 19:47:25,032 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:47:25,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:47:25,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:25,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:47:25,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:47:25,948 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-26 19:47:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2877 backedges. 2074 proven. 108 refuted. 0 times theorem prover too weak. 695 trivial. 0 not checked. [2018-10-26 19:47:27,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:47:27,694 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:47:27,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:47:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:47:28,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:47:31,475 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 1877 DAG size of output: 26 [2018-10-26 19:47:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2877 backedges. 1871 proven. 93 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2018-10-26 19:47:33,913 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:47:33,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-10-26 19:47:33,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:47:33,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:47:33,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:47:33,916 INFO L87 Difference]: Start difference. First operand 126501 states and 131667 transitions. Second operand 7 states. [2018-10-26 19:47:57,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:47:57,593 INFO L93 Difference]: Finished difference Result 277192 states and 288400 transitions. [2018-10-26 19:47:57,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 19:47:57,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1530 [2018-10-26 19:47:57,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:47:57,744 INFO L225 Difference]: With dead ends: 277192 [2018-10-26 19:47:57,744 INFO L226 Difference]: Without dead ends: 151384 [2018-10-26 19:47:57,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1538 GetRequests, 1531 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:47:57,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151384 states. [2018-10-26 19:47:58,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151384 to 130646. [2018-10-26 19:47:58,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130646 states. [2018-10-26 19:47:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130646 states to 130646 states and 135257 transitions. [2018-10-26 19:47:59,001 INFO L78 Accepts]: Start accepts. Automaton has 130646 states and 135257 transitions. Word has length 1530 [2018-10-26 19:47:59,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:47:59,002 INFO L481 AbstractCegarLoop]: Abstraction has 130646 states and 135257 transitions. [2018-10-26 19:47:59,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:47:59,003 INFO L276 IsEmpty]: Start isEmpty. Operand 130646 states and 135257 transitions. [2018-10-26 19:47:59,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1591 [2018-10-26 19:47:59,045 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:47:59,046 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:47:59,046 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:47:59,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:47:59,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1938229170, now seen corresponding path program 1 times [2018-10-26 19:47:59,047 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:47:59,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:47:59,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:59,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:47:59,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:48:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 882 proven. 93 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2018-10-26 19:48:04,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:48:04,646 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:48:04,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:48:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:48:05,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:48:06,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 882 proven. 93 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2018-10-26 19:48:06,852 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:48:06,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-10-26 19:48:06,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:48:06,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:48:06,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:48:06,855 INFO L87 Difference]: Start difference. First operand 130646 states and 135257 transitions. Second operand 6 states. [2018-10-26 19:48:18,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:48:18,042 INFO L93 Difference]: Finished difference Result 288250 states and 298323 transitions. [2018-10-26 19:48:18,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:48:18,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1590 [2018-10-26 19:48:18,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:48:18,258 INFO L225 Difference]: With dead ends: 288250 [2018-10-26 19:48:18,258 INFO L226 Difference]: Without dead ends: 158297 [2018-10-26 19:48:18,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1595 GetRequests, 1589 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:48:18,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158297 states. [2018-10-26 19:48:19,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158297 to 135485. [2018-10-26 19:48:19,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135485 states. [2018-10-26 19:48:20,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135485 states to 135485 states and 140229 transitions. [2018-10-26 19:48:20,392 INFO L78 Accepts]: Start accepts. Automaton has 135485 states and 140229 transitions. Word has length 1590 [2018-10-26 19:48:20,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:48:20,393 INFO L481 AbstractCegarLoop]: Abstraction has 135485 states and 140229 transitions. [2018-10-26 19:48:20,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:48:20,393 INFO L276 IsEmpty]: Start isEmpty. Operand 135485 states and 140229 transitions. [2018-10-26 19:48:20,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1597 [2018-10-26 19:48:20,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:48:20,437 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:48:20,437 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:48:20,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:48:20,438 INFO L82 PathProgramCache]: Analyzing trace with hash -369353464, now seen corresponding path program 1 times [2018-10-26 19:48:20,438 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:48:20,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:48:20,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:48:20,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:48:20,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:48:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:48:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2747 backedges. 1889 proven. 0 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2018-10-26 19:48:22,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:48:22,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:48:22,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:48:22,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:48:22,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:48:22,512 INFO L87 Difference]: Start difference. First operand 135485 states and 140229 transitions. Second operand 4 states. [2018-10-26 19:48:27,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:48:27,210 INFO L93 Difference]: Finished difference Result 268893 states and 278374 transitions. [2018-10-26 19:48:27,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:48:27,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1596 [2018-10-26 19:48:27,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:48:27,337 INFO L225 Difference]: With dead ends: 268893 [2018-10-26 19:48:27,337 INFO L226 Difference]: Without dead ends: 121643 [2018-10-26 19:48:27,383 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:48:27,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121643 states. [2018-10-26 19:48:28,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121643 to 120260. [2018-10-26 19:48:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120260 states. [2018-10-26 19:48:28,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120260 states to 120260 states and 123508 transitions. [2018-10-26 19:48:28,459 INFO L78 Accepts]: Start accepts. Automaton has 120260 states and 123508 transitions. Word has length 1596 [2018-10-26 19:48:28,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:48:28,460 INFO L481 AbstractCegarLoop]: Abstraction has 120260 states and 123508 transitions. [2018-10-26 19:48:28,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:48:28,460 INFO L276 IsEmpty]: Start isEmpty. Operand 120260 states and 123508 transitions. [2018-10-26 19:48:28,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1602 [2018-10-26 19:48:28,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:48:28,497 INFO L375 BasicCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:48:28,497 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:48:28,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:48:28,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1212665214, now seen corresponding path program 1 times [2018-10-26 19:48:28,498 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:48:28,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:48:28,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:48:28,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:48:28,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:48:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:48:30,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2659 backedges. 1627 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-10-26 19:48:30,883 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:48:30,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:48:30,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:48:30,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:48:30,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:48:30,885 INFO L87 Difference]: Start difference. First operand 120260 states and 123508 transitions. Second operand 4 states. [2018-10-26 19:48:35,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:48:35,902 INFO L93 Difference]: Finished difference Result 242590 states and 249230 transitions. [2018-10-26 19:48:35,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:48:35,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1601 [2018-10-26 19:48:35,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:48:36,029 INFO L225 Difference]: With dead ends: 242590 [2018-10-26 19:48:36,029 INFO L226 Difference]: Without dead ends: 123023 [2018-10-26 19:48:36,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:48:36,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123023 states. [2018-10-26 19:48:37,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123023 to 122332. [2018-10-26 19:48:37,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122332 states. [2018-10-26 19:48:37,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122332 states to 122332 states and 125277 transitions. [2018-10-26 19:48:37,422 INFO L78 Accepts]: Start accepts. Automaton has 122332 states and 125277 transitions. Word has length 1601 [2018-10-26 19:48:37,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:48:37,423 INFO L481 AbstractCegarLoop]: Abstraction has 122332 states and 125277 transitions. [2018-10-26 19:48:37,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:48:37,423 INFO L276 IsEmpty]: Start isEmpty. Operand 122332 states and 125277 transitions. [2018-10-26 19:48:37,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1619 [2018-10-26 19:48:37,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:48:37,461 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:48:37,461 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:48:37,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:48:37,462 INFO L82 PathProgramCache]: Analyzing trace with hash 324570657, now seen corresponding path program 1 times [2018-10-26 19:48:37,462 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:48:37,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:48:37,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:48:37,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:48:37,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:48:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:48:42,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3833 backedges. 2334 proven. 802 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2018-10-26 19:48:42,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:48:42,097 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:48:42,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:48:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:48:42,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-26 19:48:42,547 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-26 19:48:42,749 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:48:42,749 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:48:42,754 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:48:42,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:48:42 BoogieIcfgContainer [2018-10-26 19:48:42,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:48:42,756 INFO L168 Benchmark]: Toolchain (without parser) took 221634.25 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-10-26 19:48:42,757 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 19:48:42,758 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1835.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:48:42,758 INFO L168 Benchmark]: Boogie Procedure Inliner took 493.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -933.9 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2018-10-26 19:48:42,759 INFO L168 Benchmark]: Boogie Preprocessor took 263.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:48:42,760 INFO L168 Benchmark]: RCFGBuilder took 7062.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 544.9 MB). Peak memory consumption was 544.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:48:42,761 INFO L168 Benchmark]: TraceAbstraction took 211972.81 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.6 GB in the beginning and 3.5 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-26 19:48:42,766 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1835.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 493.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -933.9 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 263.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7062.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 544.9 MB). Peak memory consumption was 544.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211972.81 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.6 GB in the beginning and 3.5 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 48). Cancelled while BasicCegarLoop was analyzing trace of length 1619 with TraceHistMax 10,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 11 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 211.8s OverallTime, 17 OverallIterations, 10 TraceHistogramMax, 146.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10556 SDtfs, 36270 SDslu, 1856 SDs, 0 SdLazy, 88962 SolverSat, 11181 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 113.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5874 GetRequests, 5797 SyntacticMatches, 9 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135485occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 14.7s AutomataMinimizationTime, 16 MinimizatonAttempts, 117378 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 20.5s InterpolantComputationTime, 21856 NumberOfCodeBlocks, 21856 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 21836 ConstructedInterpolants, 186 QuantifiedInterpolants, 67495396 SizeOfPredicates, 2 NumberOfNonLiveVariables, 6645 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 31501/32795 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown