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_label09_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:33:08,122 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:33:08,124 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:33:08,137 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:33:08,137 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:33:08,138 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:33:08,139 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:33:08,141 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:33:08,143 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:33:08,143 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:33:08,144 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:33:08,145 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:33:08,145 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:33:08,146 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:33:08,148 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:33:08,149 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:33:08,149 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:33:08,151 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:33:08,153 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:33:08,155 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:33:08,156 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:33:08,157 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:33:08,163 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:33:08,163 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:33:08,163 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:33:08,165 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:33:08,166 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:33:08,166 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:33:08,167 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:33:08,170 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:33:08,170 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:33:08,172 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:33:08,178 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 [2018-10-23 18:33:08,208 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:33:08,208 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:33:08,210 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:33:08,210 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:33:08,211 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:33:08,211 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:33:08,211 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:33:08,211 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:33:08,212 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:33:08,213 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:33:08,213 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:33:08,213 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:33:08,214 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:33:08,214 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:33:08,214 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:33:08,214 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:33:08,214 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:33:08,215 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:33:08,216 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:33:08,216 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:33:08,216 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:33:08,216 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:33:08,217 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:33:08,217 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:33:08,217 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:33:08,217 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:33:08,218 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:33:08,218 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:33:08,289 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:33:08,303 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:33:08,306 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:33:08,307 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:33:08,307 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:33:08,308 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label09_false-unreach-call.c [2018-10-23 18:33:08,358 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/983cd42e0/49f258905c624408be6edf2f4f6f82fc/FLAGa51f2cdd5 [2018-10-23 18:33:09,125 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:33:09,126 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label09_false-unreach-call.c [2018-10-23 18:33:09,154 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/983cd42e0/49f258905c624408be6edf2f4f6f82fc/FLAGa51f2cdd5 [2018-10-23 18:33:09,171 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/983cd42e0/49f258905c624408be6edf2f4f6f82fc [2018-10-23 18:33:09,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:33:09,184 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:33:09,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:33:09,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:33:09,189 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:33:09,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:33:09" (1/1) ... [2018-10-23 18:33:09,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@219fb805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:09, skipping insertion in model container [2018-10-23 18:33:09,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:33:09" (1/1) ... [2018-10-23 18:33:09,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:33:09,338 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:33:10,456 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:33:10,470 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:33:10,988 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:33:11,015 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:33:11,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:11 WrapperNode [2018-10-23 18:33:11,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:33:11,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:33:11,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:33:11,017 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:33:11,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:11" (1/1) ... [2018-10-23 18:33:11,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:11" (1/1) ... [2018-10-23 18:33:11,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:33:11,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:33:11,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:33:11,491 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:33:11,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:11" (1/1) ... [2018-10-23 18:33:11,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:11" (1/1) ... [2018-10-23 18:33:11,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:11" (1/1) ... [2018-10-23 18:33:11,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:11" (1/1) ... [2018-10-23 18:33:11,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:11" (1/1) ... [2018-10-23 18:33:11,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:11" (1/1) ... [2018-10-23 18:33:11,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:11" (1/1) ... [2018-10-23 18:33:11,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:33:11,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:33:11,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:33:11,739 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:33:11,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:11" (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 [2018-10-23 18:33:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:33:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:33:11,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:33:18,697 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:33:18,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:33:18 BoogieIcfgContainer [2018-10-23 18:33:18,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:33:18,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:33:18,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:33:18,703 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:33:18,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:33:09" (1/3) ... [2018-10-23 18:33:18,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339152ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:33:18, skipping insertion in model container [2018-10-23 18:33:18,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:11" (2/3) ... [2018-10-23 18:33:18,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339152ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:33:18, skipping insertion in model container [2018-10-23 18:33:18,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:33:18" (3/3) ... [2018-10-23 18:33:18,707 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label09_false-unreach-call.c [2018-10-23 18:33:18,718 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:33:18,728 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:33:18,751 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:33:18,799 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:33:18,799 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:33:18,800 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:33:18,800 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:33:18,800 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:33:18,800 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:33:18,800 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:33:18,800 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:33:18,800 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:33:18,846 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-23 18:33:18,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-23 18:33:18,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:33:18,854 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:33:18,857 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:33:18,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:33:18,862 INFO L82 PathProgramCache]: Analyzing trace with hash -159296518, now seen corresponding path program 1 times [2018-10-23 18:33:18,864 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:33:18,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:33:18,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:18,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:33:18,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:33:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:33:19,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:33:19,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:33:19,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:33:19,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:33:19,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:33:19,112 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 3 states. [2018-10-23 18:33:26,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:33:26,771 INFO L93 Difference]: Finished difference Result 2208 states and 4269 transitions. [2018-10-23 18:33:26,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:33:26,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-10-23 18:33:26,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:33:26,808 INFO L225 Difference]: With dead ends: 2208 [2018-10-23 18:33:26,808 INFO L226 Difference]: Without dead ends: 1446 [2018-10-23 18:33:26,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:33:26,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-10-23 18:33:26,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1446. [2018-10-23 18:33:26,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1446 states. [2018-10-23 18:33:26,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 2407 transitions. [2018-10-23 18:33:26,957 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 2407 transitions. Word has length 11 [2018-10-23 18:33:26,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:33:26,957 INFO L481 AbstractCegarLoop]: Abstraction has 1446 states and 2407 transitions. [2018-10-23 18:33:26,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:33:26,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 2407 transitions. [2018-10-23 18:33:26,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-23 18:33:26,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:33:26,961 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:33:26,962 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:33:26,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:33:26,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1306375183, now seen corresponding path program 1 times [2018-10-23 18:33:26,963 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:33:26,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:33:26,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:26,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:33:26,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:33:27,174 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:33:27,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:33:27,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:33:27,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:33:27,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:33:27,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:33:27,180 INFO L87 Difference]: Start difference. First operand 1446 states and 2407 transitions. Second operand 4 states. [2018-10-23 18:33:35,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:33:35,213 INFO L93 Difference]: Finished difference Result 4272 states and 7156 transitions. [2018-10-23 18:33:35,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:33:35,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2018-10-23 18:33:35,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:33:35,230 INFO L225 Difference]: With dead ends: 4272 [2018-10-23 18:33:35,231 INFO L226 Difference]: Without dead ends: 2828 [2018-10-23 18:33:35,236 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 [2018-10-23 18:33:35,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2018-10-23 18:33:35,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2828. [2018-10-23 18:33:35,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2828 states. [2018-10-23 18:33:35,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 4067 transitions. [2018-10-23 18:33:35,299 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 4067 transitions. Word has length 78 [2018-10-23 18:33:35,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:33:35,300 INFO L481 AbstractCegarLoop]: Abstraction has 2828 states and 4067 transitions. [2018-10-23 18:33:35,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:33:35,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 4067 transitions. [2018-10-23 18:33:35,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-23 18:33:35,303 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:33:35,303 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:33:35,304 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:33:35,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:33:35,304 INFO L82 PathProgramCache]: Analyzing trace with hash 660456686, now seen corresponding path program 1 times [2018-10-23 18:33:35,304 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:33:35,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:33:35,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:35,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:33:35,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:33:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:33:35,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:33:35,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:33:35,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:33:35,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:33:35,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:33:35,480 INFO L87 Difference]: Start difference. First operand 2828 states and 4067 transitions. Second operand 4 states. [2018-10-23 18:33:43,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:33:43,983 INFO L93 Difference]: Finished difference Result 11198 states and 16156 transitions. [2018-10-23 18:33:43,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:33:43,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2018-10-23 18:33:43,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:33:44,026 INFO L225 Difference]: With dead ends: 11198 [2018-10-23 18:33:44,026 INFO L226 Difference]: Without dead ends: 8372 [2018-10-23 18:33:44,032 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 [2018-10-23 18:33:44,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8372 states. [2018-10-23 18:33:44,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8372 to 5592. [2018-10-23 18:33:44,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5592 states. [2018-10-23 18:33:44,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 7213 transitions. [2018-10-23 18:33:44,158 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 7213 transitions. Word has length 79 [2018-10-23 18:33:44,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:33:44,159 INFO L481 AbstractCegarLoop]: Abstraction has 5592 states and 7213 transitions. [2018-10-23 18:33:44,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:33:44,159 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 7213 transitions. [2018-10-23 18:33:44,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-23 18:33:44,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:33:44,167 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:33:44,167 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:33:44,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:33:44,168 INFO L82 PathProgramCache]: Analyzing trace with hash 2127104300, now seen corresponding path program 1 times [2018-10-23 18:33:44,168 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:33:44,168 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:33:44,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:44,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:33:44,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:33:44,581 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-23 18:33:44,824 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2018-10-23 18:33:44,988 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 11 [2018-10-23 18:33:45,097 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-23 18:33:45,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:33:45,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:33:45,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:33:45,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:33:45,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:33:45,099 INFO L87 Difference]: Start difference. First operand 5592 states and 7213 transitions. Second operand 5 states. [2018-10-23 18:33:52,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:33:52,469 INFO L93 Difference]: Finished difference Result 15328 states and 19134 transitions. [2018-10-23 18:33:52,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:33:52,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2018-10-23 18:33:52,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:33:52,508 INFO L225 Difference]: With dead ends: 15328 [2018-10-23 18:33:52,508 INFO L226 Difference]: Without dead ends: 9738 [2018-10-23 18:33:52,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:33:52,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9738 states. [2018-10-23 18:33:52,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9738 to 9047. [2018-10-23 18:33:52,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9047 states. [2018-10-23 18:33:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9047 states to 9047 states and 10903 transitions. [2018-10-23 18:33:52,683 INFO L78 Accepts]: Start accepts. Automaton has 9047 states and 10903 transitions. Word has length 200 [2018-10-23 18:33:52,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:33:52,684 INFO L481 AbstractCegarLoop]: Abstraction has 9047 states and 10903 transitions. [2018-10-23 18:33:52,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:33:52,685 INFO L276 IsEmpty]: Start isEmpty. Operand 9047 states and 10903 transitions. [2018-10-23 18:33:52,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-10-23 18:33:52,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:33:52,690 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:33:52,690 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:33:52,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:33:52,691 INFO L82 PathProgramCache]: Analyzing trace with hash -238322957, now seen corresponding path program 1 times [2018-10-23 18:33:52,691 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:33:52,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:33:52,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:52,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:33:52,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:33:53,227 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 18:33:53,549 WARN L179 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-10-23 18:33:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 252 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-23 18:33:53,732 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:33:53,732 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 [2018-10-23 18:33:53,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:33:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:33:53,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:33:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-10-23 18:33:54,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:33:54,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 18:33:54,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:33:54,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:33:54,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:33:54,100 INFO L87 Difference]: Start difference. First operand 9047 states and 10903 transitions. Second operand 6 states. [2018-10-23 18:34:08,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:34:08,871 INFO L93 Difference]: Finished difference Result 26400 states and 31518 transitions. [2018-10-23 18:34:08,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 18:34:08,872 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 383 [2018-10-23 18:34:08,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:34:08,920 INFO L225 Difference]: With dead ends: 26400 [2018-10-23 18:34:08,921 INFO L226 Difference]: Without dead ends: 13890 [2018-10-23 18:34:08,933 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 385 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-23 18:34:08,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13890 states. [2018-10-23 18:34:09,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13890 to 11115. [2018-10-23 18:34:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11115 states. [2018-10-23 18:34:09,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11115 states to 11115 states and 12233 transitions. [2018-10-23 18:34:09,133 INFO L78 Accepts]: Start accepts. Automaton has 11115 states and 12233 transitions. Word has length 383 [2018-10-23 18:34:09,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:34:09,133 INFO L481 AbstractCegarLoop]: Abstraction has 11115 states and 12233 transitions. [2018-10-23 18:34:09,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:34:09,134 INFO L276 IsEmpty]: Start isEmpty. Operand 11115 states and 12233 transitions. [2018-10-23 18:34:09,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-10-23 18:34:09,142 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:34:09,143 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 18:34:09,143 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:34:09,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:34:09,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1171501576, now seen corresponding path program 1 times [2018-10-23 18:34:09,144 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:34:09,144 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:34:09,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:09,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:09,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-23 18:34:09,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:34:09,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:34:09,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:34:09,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:34:09,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:34:09,707 INFO L87 Difference]: Start difference. First operand 11115 states and 12233 transitions. Second operand 4 states. [2018-10-23 18:34:17,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:34:17,693 INFO L93 Difference]: Finished difference Result 30535 states and 34435 transitions. [2018-10-23 18:34:17,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:34:17,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 470 [2018-10-23 18:34:17,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:34:17,730 INFO L225 Difference]: With dead ends: 30535 [2018-10-23 18:34:17,730 INFO L226 Difference]: Without dead ends: 18030 [2018-10-23 18:34:17,742 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 [2018-10-23 18:34:17,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18030 states. [2018-10-23 18:34:17,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18030 to 14565. [2018-10-23 18:34:17,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14565 states. [2018-10-23 18:34:17,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14565 states to 14565 states and 15989 transitions. [2018-10-23 18:34:17,935 INFO L78 Accepts]: Start accepts. Automaton has 14565 states and 15989 transitions. Word has length 470 [2018-10-23 18:34:17,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:34:17,935 INFO L481 AbstractCegarLoop]: Abstraction has 14565 states and 15989 transitions. [2018-10-23 18:34:17,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:34:17,936 INFO L276 IsEmpty]: Start isEmpty. Operand 14565 states and 15989 transitions. [2018-10-23 18:34:17,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-10-23 18:34:17,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:34:17,945 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 18:34:17,945 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:34:17,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:34:17,946 INFO L82 PathProgramCache]: Analyzing trace with hash 556148764, now seen corresponding path program 1 times [2018-10-23 18:34:17,946 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:34:17,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:34:17,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:17,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:17,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:18,534 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-23 18:34:18,680 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-23 18:34:18,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:34:18,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:34:18,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:34:18,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:34:18,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:34:18,682 INFO L87 Difference]: Start difference. First operand 14565 states and 15989 transitions. Second operand 4 states. [2018-10-23 18:34:24,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:34:24,977 INFO L93 Difference]: Finished difference Result 56077 states and 61754 transitions. [2018-10-23 18:34:24,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:34:24,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 478 [2018-10-23 18:34:24,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:34:25,207 INFO L225 Difference]: With dead ends: 56077 [2018-10-23 18:34:25,208 INFO L226 Difference]: Without dead ends: 40821 [2018-10-23 18:34:25,225 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 [2018-10-23 18:34:25,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40821 states. [2018-10-23 18:34:25,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40821 to 38748. [2018-10-23 18:34:25,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38748 states. [2018-10-23 18:34:25,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38748 states to 38748 states and 41749 transitions. [2018-10-23 18:34:25,655 INFO L78 Accepts]: Start accepts. Automaton has 38748 states and 41749 transitions. Word has length 478 [2018-10-23 18:34:25,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:34:25,656 INFO L481 AbstractCegarLoop]: Abstraction has 38748 states and 41749 transitions. [2018-10-23 18:34:25,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:34:25,656 INFO L276 IsEmpty]: Start isEmpty. Operand 38748 states and 41749 transitions. [2018-10-23 18:34:25,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2018-10-23 18:34:25,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:34:25,669 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 18:34:25,669 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:34:25,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:34:25,670 INFO L82 PathProgramCache]: Analyzing trace with hash -809065653, now seen corresponding path program 1 times [2018-10-23 18:34:25,670 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:34:25,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:34:25,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:25,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:25,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2018-10-23 18:34:26,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:34:26,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:34:26,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:34:26,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:34:26,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:34:26,253 INFO L87 Difference]: Start difference. First operand 38748 states and 41749 transitions. Second operand 3 states. [2018-10-23 18:34:29,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:34:29,816 INFO L93 Difference]: Finished difference Result 77494 states and 83496 transitions. [2018-10-23 18:34:29,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:34:29,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 484 [2018-10-23 18:34:29,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:34:29,862 INFO L225 Difference]: With dead ends: 77494 [2018-10-23 18:34:29,862 INFO L226 Difference]: Without dead ends: 38748 [2018-10-23 18:34:29,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:34:29,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38748 states. [2018-10-23 18:34:30,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38748 to 38748. [2018-10-23 18:34:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38748 states. [2018-10-23 18:34:30,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38748 states to 38748 states and 41166 transitions. [2018-10-23 18:34:30,308 INFO L78 Accepts]: Start accepts. Automaton has 38748 states and 41166 transitions. Word has length 484 [2018-10-23 18:34:30,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:34:30,309 INFO L481 AbstractCegarLoop]: Abstraction has 38748 states and 41166 transitions. [2018-10-23 18:34:30,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:34:30,309 INFO L276 IsEmpty]: Start isEmpty. Operand 38748 states and 41166 transitions. [2018-10-23 18:34:30,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-10-23 18:34:30,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:34:30,321 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 18:34:30,321 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:34:30,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:34:30,322 INFO L82 PathProgramCache]: Analyzing trace with hash -746510753, now seen corresponding path program 1 times [2018-10-23 18:34:30,322 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:34:30,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:34:30,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:30,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:30,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-23 18:34:30,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:34:30,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:34:30,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:34:30,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:34:30,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:34:30,805 INFO L87 Difference]: Start difference. First operand 38748 states and 41166 transitions. Second operand 3 states. [2018-10-23 18:34:33,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:34:33,967 INFO L93 Difference]: Finished difference Result 78876 states and 83778 transitions. [2018-10-23 18:34:33,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:34:33,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 492 [2018-10-23 18:34:33,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:34:34,006 INFO L225 Difference]: With dead ends: 78876 [2018-10-23 18:34:34,006 INFO L226 Difference]: Without dead ends: 40130 [2018-10-23 18:34:34,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:34:34,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40130 states. [2018-10-23 18:34:34,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40130 to 40130. [2018-10-23 18:34:34,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40130 states. [2018-10-23 18:34:34,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40130 states to 40130 states and 42550 transitions. [2018-10-23 18:34:34,461 INFO L78 Accepts]: Start accepts. Automaton has 40130 states and 42550 transitions. Word has length 492 [2018-10-23 18:34:34,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:34:34,462 INFO L481 AbstractCegarLoop]: Abstraction has 40130 states and 42550 transitions. [2018-10-23 18:34:34,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:34:34,462 INFO L276 IsEmpty]: Start isEmpty. Operand 40130 states and 42550 transitions. [2018-10-23 18:34:34,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2018-10-23 18:34:34,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:34:34,467 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:34:34,468 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:34:34,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:34:34,468 INFO L82 PathProgramCache]: Analyzing trace with hash -578733036, now seen corresponding path program 1 times [2018-10-23 18:34:34,468 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:34:34,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:34:34,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:34,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:34,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:34,920 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-23 18:34:34,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:34:34,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:34:34,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:34:34,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:34:34,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:34:34,921 INFO L87 Difference]: Start difference. First operand 40130 states and 42550 transitions. Second operand 4 states. [2018-10-23 18:34:40,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:34:40,226 INFO L93 Difference]: Finished difference Result 89932 states and 95582 transitions. [2018-10-23 18:34:40,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:34:40,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 520 [2018-10-23 18:34:40,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:34:40,276 INFO L225 Difference]: With dead ends: 89932 [2018-10-23 18:34:40,277 INFO L226 Difference]: Without dead ends: 49111 [2018-10-23 18:34:40,294 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 [2018-10-23 18:34:40,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49111 states. [2018-10-23 18:34:40,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49111 to 49111. [2018-10-23 18:34:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49111 states. [2018-10-23 18:34:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49111 states to 49111 states and 51892 transitions. [2018-10-23 18:34:40,792 INFO L78 Accepts]: Start accepts. Automaton has 49111 states and 51892 transitions. Word has length 520 [2018-10-23 18:34:40,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:34:40,792 INFO L481 AbstractCegarLoop]: Abstraction has 49111 states and 51892 transitions. [2018-10-23 18:34:40,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:34:40,792 INFO L276 IsEmpty]: Start isEmpty. Operand 49111 states and 51892 transitions. [2018-10-23 18:34:40,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2018-10-23 18:34:40,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:34:40,811 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:34:40,811 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:34:40,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:34:40,812 INFO L82 PathProgramCache]: Analyzing trace with hash 2001695866, now seen corresponding path program 1 times [2018-10-23 18:34:40,814 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:34:40,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:34:40,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:40,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:40,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:42,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2018-10-23 18:34:42,152 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:34:42,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:34:42,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:34:42,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:34:42,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:34:42,154 INFO L87 Difference]: Start difference. First operand 49111 states and 51892 transitions. Second operand 4 states. [2018-10-23 18:34:47,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:34:47,775 INFO L93 Difference]: Finished difference Result 115495 states and 122863 transitions. [2018-10-23 18:34:47,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:34:47,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1086 [2018-10-23 18:34:47,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:34:47,844 INFO L225 Difference]: With dead ends: 115495 [2018-10-23 18:34:47,844 INFO L226 Difference]: Without dead ends: 58765 [2018-10-23 18:34:47,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:34:47,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58765 states. [2018-10-23 18:34:48,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58765 to 58765. [2018-10-23 18:34:48,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58765 states. [2018-10-23 18:34:48,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58765 states to 58765 states and 61377 transitions. [2018-10-23 18:34:48,344 INFO L78 Accepts]: Start accepts. Automaton has 58765 states and 61377 transitions. Word has length 1086 [2018-10-23 18:34:48,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:34:48,345 INFO L481 AbstractCegarLoop]: Abstraction has 58765 states and 61377 transitions. [2018-10-23 18:34:48,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:34:48,345 INFO L276 IsEmpty]: Start isEmpty. Operand 58765 states and 61377 transitions. [2018-10-23 18:34:48,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1103 [2018-10-23 18:34:48,358 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:34:48,359 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:34:48,359 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:34:48,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:34:48,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1127306201, now seen corresponding path program 1 times [2018-10-23 18:34:48,360 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:34:48,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:34:48,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:48,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:48,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 969 backedges. 497 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-23 18:34:49,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:34:49,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:34:49,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:34:49,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:34:49,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:34:49,880 INFO L87 Difference]: Start difference. First operand 58765 states and 61377 transitions. Second operand 4 states. [2018-10-23 18:34:55,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:34:55,232 INFO L93 Difference]: Finished difference Result 136879 states and 144101 transitions. [2018-10-23 18:34:55,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:34:55,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1102 [2018-10-23 18:34:55,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:34:55,324 INFO L225 Difference]: With dead ends: 136879 [2018-10-23 18:34:55,324 INFO L226 Difference]: Without dead ends: 77422 [2018-10-23 18:34:55,364 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 [2018-10-23 18:34:55,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77422 states. [2018-10-23 18:34:55,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77422 to 76731. [2018-10-23 18:34:55,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76731 states. [2018-10-23 18:34:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76731 states to 76731 states and 80314 transitions. [2018-10-23 18:34:56,037 INFO L78 Accepts]: Start accepts. Automaton has 76731 states and 80314 transitions. Word has length 1102 [2018-10-23 18:34:56,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:34:56,038 INFO L481 AbstractCegarLoop]: Abstraction has 76731 states and 80314 transitions. [2018-10-23 18:34:56,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:34:56,038 INFO L276 IsEmpty]: Start isEmpty. Operand 76731 states and 80314 transitions. [2018-10-23 18:34:56,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1140 [2018-10-23 18:34:56,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:34:56,052 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:34:56,052 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:34:56,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:34:56,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1550174317, now seen corresponding path program 1 times [2018-10-23 18:34:56,053 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:34:56,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:34:56,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:56,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:56,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:57,160 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-10-23 18:35:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 465 proven. 499 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-10-23 18:35:00,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:35:00,694 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 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 [2018-10-23 18:35:00,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:35:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:35:00,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:35:02,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2018-10-23 18:35:02,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:35:02,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 12 [2018-10-23 18:35:02,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 18:35:02,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 18:35:02,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-10-23 18:35:02,249 INFO L87 Difference]: Start difference. First operand 76731 states and 80314 transitions. Second operand 13 states. [2018-10-23 18:35:19,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:35:19,151 INFO L93 Difference]: Finished difference Result 156940 states and 164176 transitions. [2018-10-23 18:35:19,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-23 18:35:19,151 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1139 [2018-10-23 18:35:19,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:35:19,239 INFO L225 Difference]: With dead ends: 156940 [2018-10-23 18:35:19,239 INFO L226 Difference]: Without dead ends: 76748 [2018-10-23 18:35:19,276 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1163 GetRequests, 1139 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2018-10-23 18:35:19,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76748 states. [2018-10-23 18:35:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76748 to 71886. [2018-10-23 18:35:19,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71886 states. [2018-10-23 18:35:19,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71886 states to 71886 states and 75038 transitions. [2018-10-23 18:35:19,878 INFO L78 Accepts]: Start accepts. Automaton has 71886 states and 75038 transitions. Word has length 1139 [2018-10-23 18:35:19,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:35:19,879 INFO L481 AbstractCegarLoop]: Abstraction has 71886 states and 75038 transitions. [2018-10-23 18:35:19,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-23 18:35:19,879 INFO L276 IsEmpty]: Start isEmpty. Operand 71886 states and 75038 transitions. [2018-10-23 18:35:19,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1156 [2018-10-23 18:35:19,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:35:19,896 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:35:19,896 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:35:19,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:35:19,896 INFO L82 PathProgramCache]: Analyzing trace with hash -823284843, now seen corresponding path program 1 times [2018-10-23 18:35:19,897 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:35:19,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:35:19,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:35:19,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:35:19,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:35:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:35:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 670 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2018-10-23 18:35:21,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:35:21,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:35:21,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:35:21,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:35:21,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:35:21,603 INFO L87 Difference]: Start difference. First operand 71886 states and 75038 transitions. Second operand 4 states. [2018-10-23 18:35:27,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:35:27,765 INFO L93 Difference]: Finished difference Result 167954 states and 175380 transitions. [2018-10-23 18:35:27,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:35:27,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1155 [2018-10-23 18:35:27,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:35:27,870 INFO L225 Difference]: With dead ends: 167954 [2018-10-23 18:35:27,870 INFO L226 Difference]: Without dead ends: 96761 [2018-10-23 18:35:27,914 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 [2018-10-23 18:35:27,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96761 states. [2018-10-23 18:35:28,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96761 to 84319. [2018-10-23 18:35:28,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84319 states. [2018-10-23 18:35:29,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84319 states to 84319 states and 87593 transitions. [2018-10-23 18:35:29,037 INFO L78 Accepts]: Start accepts. Automaton has 84319 states and 87593 transitions. Word has length 1155 [2018-10-23 18:35:29,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:35:29,038 INFO L481 AbstractCegarLoop]: Abstraction has 84319 states and 87593 transitions. [2018-10-23 18:35:29,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:35:29,038 INFO L276 IsEmpty]: Start isEmpty. Operand 84319 states and 87593 transitions. [2018-10-23 18:35:29,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1162 [2018-10-23 18:35:29,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:35:29,052 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:35:29,052 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:35:29,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:35:29,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1391858788, now seen corresponding path program 1 times [2018-10-23 18:35:29,052 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:35:29,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:35:29,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:35:29,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:35:29,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:35:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:35:32,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 628 proven. 752 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-10-23 18:35:32,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:35:32,320 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 [2018-10-23 18:35:32,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:35:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:35:32,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:35:33,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 773 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2018-10-23 18:35:33,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:35:33,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-10-23 18:35:33,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 18:35:33,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 18:35:33,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-10-23 18:35:33,953 INFO L87 Difference]: Start difference. First operand 84319 states and 87593 transitions. Second operand 12 states. [2018-10-23 18:35:53,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:35:53,130 INFO L93 Difference]: Finished difference Result 227522 states and 236586 transitions. [2018-10-23 18:35:53,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-23 18:35:53,131 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1161 [2018-10-23 18:35:53,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:35:53,273 INFO L225 Difference]: With dead ends: 227522 [2018-10-23 18:35:53,274 INFO L226 Difference]: Without dead ends: 143896 [2018-10-23 18:35:53,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1202 GetRequests, 1173 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=228, Invalid=584, Unknown=0, NotChecked=0, Total=812 [2018-10-23 18:35:53,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143896 states. [2018-10-23 18:35:54,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143896 to 103667. [2018-10-23 18:35:54,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103667 states. [2018-10-23 18:35:54,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103667 states to 103667 states and 107121 transitions. [2018-10-23 18:35:54,736 INFO L78 Accepts]: Start accepts. Automaton has 103667 states and 107121 transitions. Word has length 1161 [2018-10-23 18:35:54,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:35:54,737 INFO L481 AbstractCegarLoop]: Abstraction has 103667 states and 107121 transitions. [2018-10-23 18:35:54,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-23 18:35:54,737 INFO L276 IsEmpty]: Start isEmpty. Operand 103667 states and 107121 transitions. [2018-10-23 18:35:54,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1170 [2018-10-23 18:35:54,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:35:54,750 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:35:54,750 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:35:54,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:35:54,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1927184345, now seen corresponding path program 1 times [2018-10-23 18:35:54,751 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:35:54,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:35:54,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:35:54,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:35:54,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:35:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:35:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2018-10-23 18:35:55,853 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:35:55,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:35:55,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:35:55,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:35:55,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:35:55,855 INFO L87 Difference]: Start difference. First operand 103667 states and 107121 transitions. Second operand 4 states. [2018-10-23 18:36:01,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:36:01,336 INFO L93 Difference]: Finished difference Result 222530 states and 230092 transitions. [2018-10-23 18:36:01,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:36:01,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1169 [2018-10-23 18:36:01,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:36:01,494 INFO L225 Difference]: With dead ends: 222530 [2018-10-23 18:36:01,494 INFO L226 Difference]: Without dead ends: 117480 [2018-10-23 18:36:01,576 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 [2018-10-23 18:36:01,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117480 states. [2018-10-23 18:36:02,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117480 to 113334. [2018-10-23 18:36:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113334 states. [2018-10-23 18:36:02,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113334 states to 113334 states and 116836 transitions. [2018-10-23 18:36:02,721 INFO L78 Accepts]: Start accepts. Automaton has 113334 states and 116836 transitions. Word has length 1169 [2018-10-23 18:36:02,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:36:02,722 INFO L481 AbstractCegarLoop]: Abstraction has 113334 states and 116836 transitions. [2018-10-23 18:36:02,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:36:02,722 INFO L276 IsEmpty]: Start isEmpty. Operand 113334 states and 116836 transitions. [2018-10-23 18:36:02,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1206 [2018-10-23 18:36:02,734 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:36:02,735 INFO L375 BasicCegarLoop]: trace histogram [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, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:36:02,735 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:36:02,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:36:02,736 INFO L82 PathProgramCache]: Analyzing trace with hash -2028653076, now seen corresponding path program 1 times [2018-10-23 18:36:02,736 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:36:02,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:36:02,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:02,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:36:02,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:36:03,490 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-23 18:36:03,766 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-10-23 18:36:04,052 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-10-23 18:36:07,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1822 backedges. 553 proven. 1055 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-10-23 18:36:07,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:36:07,081 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 [2018-10-23 18:36:07,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:36:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:36:07,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:36:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1822 backedges. 795 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2018-10-23 18:36:07,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:36:07,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-10-23 18:36:07,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 18:36:07,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 18:36:07,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-23 18:36:07,996 INFO L87 Difference]: Start difference. First operand 113334 states and 116836 transitions. Second operand 12 states. [2018-10-23 18:36:26,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:36:26,098 INFO L93 Difference]: Finished difference Result 264900 states and 273022 transitions. [2018-10-23 18:36:26,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-23 18:36:26,098 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1205 [2018-10-23 18:36:26,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:36:26,255 INFO L225 Difference]: With dead ends: 264900 [2018-10-23 18:36:26,255 INFO L226 Difference]: Without dead ends: 152259 [2018-10-23 18:36:26,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1243 GetRequests, 1216 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2018-10-23 18:36:26,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152259 states. [2018-10-23 18:36:27,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152259 to 111952. [2018-10-23 18:36:27,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111952 states. [2018-10-23 18:36:27,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111952 states to 111952 states and 114254 transitions. [2018-10-23 18:36:27,545 INFO L78 Accepts]: Start accepts. Automaton has 111952 states and 114254 transitions. Word has length 1205 [2018-10-23 18:36:27,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:36:27,547 INFO L481 AbstractCegarLoop]: Abstraction has 111952 states and 114254 transitions. [2018-10-23 18:36:27,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-23 18:36:27,547 INFO L276 IsEmpty]: Start isEmpty. Operand 111952 states and 114254 transitions. [2018-10-23 18:36:27,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1264 [2018-10-23 18:36:27,563 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:36:27,564 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:36:27,564 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:36:27,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:36:27,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1340611452, now seen corresponding path program 1 times [2018-10-23 18:36:27,565 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:36:27,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:36:27,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:27,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:36:27,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:36:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 873 proven. 117 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-10-23 18:36:29,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:36:29,080 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 [2018-10-23 18:36:29,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:36:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:36:29,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:36:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 873 proven. 117 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-10-23 18:36:30,454 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:36:30,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-10-23 18:36:30,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:36:30,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:36:30,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:36:30,456 INFO L87 Difference]: Start difference. First operand 111952 states and 114254 transitions. Second operand 6 states. [2018-10-23 18:36:42,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:36:42,603 INFO L93 Difference]: Finished difference Result 252924 states and 258518 transitions. [2018-10-23 18:36:42,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:36:42,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1263 [2018-10-23 18:36:42,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:36:42,785 INFO L225 Difference]: With dead ends: 252924 [2018-10-23 18:36:42,786 INFO L226 Difference]: Without dead ends: 140974 [2018-10-23 18:36:42,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1271 GetRequests, 1264 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:36:42,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140974 states. [2018-10-23 18:36:44,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140974 to 127845. [2018-10-23 18:36:44,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127845 states. [2018-10-23 18:36:44,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127845 states to 127845 states and 130352 transitions. [2018-10-23 18:36:44,945 INFO L78 Accepts]: Start accepts. Automaton has 127845 states and 130352 transitions. Word has length 1263 [2018-10-23 18:36:44,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:36:44,946 INFO L481 AbstractCegarLoop]: Abstraction has 127845 states and 130352 transitions. [2018-10-23 18:36:44,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:36:44,946 INFO L276 IsEmpty]: Start isEmpty. Operand 127845 states and 130352 transitions. [2018-10-23 18:36:44,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1379 [2018-10-23 18:36:44,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:36:44,969 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:36:44,969 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:36:44,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:36:44,970 INFO L82 PathProgramCache]: Analyzing trace with hash -817422425, now seen corresponding path program 1 times [2018-10-23 18:36:44,970 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:36:44,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:36:44,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:44,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:36:44,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:36:45,973 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 18:36:49,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1795 backedges. 1109 proven. 108 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-10-23 18:36:49,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:36:49,804 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:36:49,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:36:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:36:50,114 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:36:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1795 backedges. 885 proven. 9 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2018-10-23 18:36:51,222 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:36:51,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-10-23 18:36:51,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:36:51,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:36:51,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:36:51,224 INFO L87 Difference]: Start difference. First operand 127845 states and 130352 transitions. Second operand 7 states. Received shutdown request... [2018-10-23 18:36:55,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:36:55,897 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:36:55,903 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:36:55,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:36:55 BoogieIcfgContainer [2018-10-23 18:36:55,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:36:55,904 INFO L168 Benchmark]: Toolchain (without parser) took 226721.51 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 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-23 18:36:55,905 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-23 18:36:55,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1830.86 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. [2018-10-23 18:36:55,907 INFO L168 Benchmark]: Boogie Procedure Inliner took 473.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -940.9 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-23 18:36:55,907 INFO L168 Benchmark]: Boogie Preprocessor took 247.11 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:36:55,908 INFO L168 Benchmark]: RCFGBuilder took 6960.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 539.6 MB). Peak memory consumption was 539.6 MB. Max. memory is 7.1 GB. [2018-10-23 18:36:55,909 INFO L168 Benchmark]: TraceAbstraction took 217204.45 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 2.5 GB in the end (delta: -918.6 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-23 18:36:55,913 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1830.86 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 473.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -940.9 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 247.11 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6960.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 539.6 MB). Peak memory consumption was 539.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217204.45 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 2.5 GB in the end (delta: -918.6 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 39]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 39). Cancelled while BasicCegarLoop was constructing difference of abstraction (127845states) and FLOYD_HOARE automaton (currently 4 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (1407 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 217.1s OverallTime, 19 OverallIterations, 8 TraceHistogramMax, 168.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11128 SDtfs, 52307 SDslu, 2065 SDs, 0 SdLazy, 115731 SolverSat, 12463 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 131.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6712 GetRequests, 6578 SyntacticMatches, 15 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127845occurred in iteration=18, 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: 11.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 127590 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 16.6s InterpolantComputationTime, 20382 NumberOfCodeBlocks, 20382 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 20357 ConstructedInterpolants, 10 QuantifiedInterpolants, 65887451 SizeOfPredicates, 3 NumberOfNonLiveVariables, 7609 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 25 InterpolantComputations, 17 PerfectInterpolantSequences, 19749/22410 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown