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/Problem17_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:44:41,176 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:44:41,178 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:44:41,192 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:44:41,192 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:44:41,193 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:44:41,195 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:44:41,198 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:44:41,201 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:44:41,203 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:44:41,204 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:44:41,204 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:44:41,206 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:44:41,208 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:44:41,209 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:44:41,209 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:44:41,210 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:44:41,212 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:44:41,214 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:44:41,216 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:44:41,217 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:44:41,218 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:44:41,221 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:44:41,231 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 20:44:41,258 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:44:41,258 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:44:41,259 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:44:41,259 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:44:41,260 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:44:41,260 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:44:41,260 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:44:41,260 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:44:41,261 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:44:41,261 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:44:41,261 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:44:41,261 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:44:41,261 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:44:41,262 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:44:41,262 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:44:41,262 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:44:41,262 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:44:41,262 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:44:41,263 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:44:41,263 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:44:41,263 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:44:41,263 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:44:41,263 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:44:41,263 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:44:41,264 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:44:41,264 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:44:41,264 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:44:41,264 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:44:41,307 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:44:41,325 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:44:41,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:44:41,331 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:44:41,331 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:44:41,332 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label22_true-unreach-call.c [2018-10-23 20:44:41,394 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4bd98d083/9aa4f6f8e8b74e908036c363d7984cb9/FLAGfcf78f7b7 [2018-10-23 20:44:42,078 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:44:42,080 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label22_true-unreach-call.c [2018-10-23 20:44:42,107 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4bd98d083/9aa4f6f8e8b74e908036c363d7984cb9/FLAGfcf78f7b7 [2018-10-23 20:44:42,131 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4bd98d083/9aa4f6f8e8b74e908036c363d7984cb9 [2018-10-23 20:44:42,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:44:42,148 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:44:42,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:44:42,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:44:42,154 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:44:42,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:44:42" (1/1) ... [2018-10-23 20:44:42,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1276bf54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:42, skipping insertion in model container [2018-10-23 20:44:42,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:44:42" (1/1) ... [2018-10-23 20:44:42,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:44:42,290 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:44:43,324 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:44:43,329 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:44:43,740 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:44:43,767 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:44:43,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:43 WrapperNode [2018-10-23 20:44:43,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:44:43,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:44:43,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:44:43,772 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:44:43,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:43" (1/1) ... [2018-10-23 20:44:43,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:43" (1/1) ... [2018-10-23 20:44:44,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:44:44,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:44:44,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:44:44,316 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:44:44,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:43" (1/1) ... [2018-10-23 20:44:44,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:43" (1/1) ... [2018-10-23 20:44:44,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:43" (1/1) ... [2018-10-23 20:44:44,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:43" (1/1) ... [2018-10-23 20:44:44,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:43" (1/1) ... [2018-10-23 20:44:44,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:43" (1/1) ... [2018-10-23 20:44:44,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:43" (1/1) ... [2018-10-23 20:44:44,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:44:44,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:44:44,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:44:44,718 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:44:44,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:43" (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 20:44:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:44:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:44:44,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:44:55,155 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:44:55,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:44:55 BoogieIcfgContainer [2018-10-23 20:44:55,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:44:55,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:44:55,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:44:55,161 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:44:55,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:44:42" (1/3) ... [2018-10-23 20:44:55,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3b52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:44:55, skipping insertion in model container [2018-10-23 20:44:55,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:43" (2/3) ... [2018-10-23 20:44:55,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3b52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:44:55, skipping insertion in model container [2018-10-23 20:44:55,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:44:55" (3/3) ... [2018-10-23 20:44:55,165 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label22_true-unreach-call.c [2018-10-23 20:44:55,175 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:44:55,185 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:44:55,203 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:44:55,245 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:44:55,246 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:44:55,246 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:44:55,247 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:44:55,247 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:44:55,247 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:44:55,247 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:44:55,247 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:44:55,247 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:44:55,279 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 20:44:55,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-23 20:44:55,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:44:55,297 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:44:55,301 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:44:55,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:44:55,308 INFO L82 PathProgramCache]: Analyzing trace with hash -2139005982, now seen corresponding path program 1 times [2018-10-23 20:44:55,310 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:44:55,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:44:55,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:44:55,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:44:55,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:44:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:44:55,864 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 20:44:55,867 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:44:55,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:44:55,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:44:55,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:44:55,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:44:55,894 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 20:45:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:45:06,850 INFO L93 Difference]: Finished difference Result 2122 states and 3950 transitions. [2018-10-23 20:45:06,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:45:06,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-10-23 20:45:06,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:45:06,886 INFO L225 Difference]: With dead ends: 2122 [2018-10-23 20:45:06,887 INFO L226 Difference]: Without dead ends: 1524 [2018-10-23 20:45:06,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:45:06,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2018-10-23 20:45:07,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1497. [2018-10-23 20:45:07,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1497 states. [2018-10-23 20:45:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2656 transitions. [2018-10-23 20:45:07,035 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2656 transitions. Word has length 52 [2018-10-23 20:45:07,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:45:07,036 INFO L481 AbstractCegarLoop]: Abstraction has 1497 states and 2656 transitions. [2018-10-23 20:45:07,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:45:07,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2656 transitions. [2018-10-23 20:45:07,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-23 20:45:07,044 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:45:07,047 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 20:45:07,048 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:45:07,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:45:07,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1499238789, now seen corresponding path program 1 times [2018-10-23 20:45:07,048 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:45:07,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:45:07,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:07,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:45:07,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:45:07,285 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:45:07,285 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:45:07,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:45:07,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:45:07,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:45:07,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:45:07,288 INFO L87 Difference]: Start difference. First operand 1497 states and 2656 transitions. Second operand 4 states. [2018-10-23 20:45:21,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:45:21,238 INFO L93 Difference]: Finished difference Result 5604 states and 10151 transitions. [2018-10-23 20:45:21,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:45:21,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2018-10-23 20:45:21,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:45:21,263 INFO L225 Difference]: With dead ends: 5604 [2018-10-23 20:45:21,263 INFO L226 Difference]: Without dead ends: 4109 [2018-10-23 20:45:21,267 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 20:45:21,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2018-10-23 20:45:21,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4098. [2018-10-23 20:45:21,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4098 states. [2018-10-23 20:45:21,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 6039 transitions. [2018-10-23 20:45:21,349 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 6039 transitions. Word has length 127 [2018-10-23 20:45:21,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:45:21,349 INFO L481 AbstractCegarLoop]: Abstraction has 4098 states and 6039 transitions. [2018-10-23 20:45:21,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:45:21,350 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 6039 transitions. [2018-10-23 20:45:21,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-23 20:45:21,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:45:21,356 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:45:21,357 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:45:21,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:45:21,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1510720438, now seen corresponding path program 1 times [2018-10-23 20:45:21,357 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:45:21,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:45:21,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:21,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:45:21,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:45:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:45:21,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:45:21,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:45:21,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:45:21,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:45:21,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:45:21,707 INFO L87 Difference]: Start difference. First operand 4098 states and 6039 transitions. Second operand 4 states. [2018-10-23 20:45:29,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:45:29,616 INFO L93 Difference]: Finished difference Result 15443 states and 23002 transitions. [2018-10-23 20:45:29,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:45:29,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 190 [2018-10-23 20:45:29,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:45:29,668 INFO L225 Difference]: With dead ends: 15443 [2018-10-23 20:45:29,669 INFO L226 Difference]: Without dead ends: 11347 [2018-10-23 20:45:29,676 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:45:29,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11347 states. [2018-10-23 20:45:29,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11347 to 11347. [2018-10-23 20:45:29,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11347 states. [2018-10-23 20:45:29,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11347 states to 11347 states and 14546 transitions. [2018-10-23 20:45:29,874 INFO L78 Accepts]: Start accepts. Automaton has 11347 states and 14546 transitions. Word has length 190 [2018-10-23 20:45:29,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:45:29,874 INFO L481 AbstractCegarLoop]: Abstraction has 11347 states and 14546 transitions. [2018-10-23 20:45:29,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:45:29,876 INFO L276 IsEmpty]: Start isEmpty. Operand 11347 states and 14546 transitions. [2018-10-23 20:45:29,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-23 20:45:29,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:45:29,885 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2018-10-23 20:45:29,886 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:45:29,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:45:29,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1296060174, now seen corresponding path program 1 times [2018-10-23 20:45:29,887 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:45:29,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:45:29,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:29,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:45:29,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:45:30,273 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 20:45:30,305 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:45:30,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:45:30,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:45:30,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:45:30,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:45:30,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:45:30,308 INFO L87 Difference]: Start difference. First operand 11347 states and 14546 transitions. Second operand 4 states. [2018-10-23 20:45:34,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:45:34,666 INFO L93 Difference]: Finished difference Result 23544 states and 30340 transitions. [2018-10-23 20:45:34,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:45:34,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2018-10-23 20:45:34,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:45:34,709 INFO L225 Difference]: With dead ends: 23544 [2018-10-23 20:45:34,709 INFO L226 Difference]: Without dead ends: 12199 [2018-10-23 20:45:34,725 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 20:45:34,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12199 states. [2018-10-23 20:45:35,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12199 to 12199. [2018-10-23 20:45:35,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12199 states. [2018-10-23 20:45:35,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12199 states to 12199 states and 14547 transitions. [2018-10-23 20:45:35,130 INFO L78 Accepts]: Start accepts. Automaton has 12199 states and 14547 transitions. Word has length 215 [2018-10-23 20:45:35,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:45:35,132 INFO L481 AbstractCegarLoop]: Abstraction has 12199 states and 14547 transitions. [2018-10-23 20:45:35,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:45:35,132 INFO L276 IsEmpty]: Start isEmpty. Operand 12199 states and 14547 transitions. [2018-10-23 20:45:35,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-23 20:45:35,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:45:35,140 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:45:35,141 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:45:35,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:45:35,141 INFO L82 PathProgramCache]: Analyzing trace with hash -82047802, now seen corresponding path program 1 times [2018-10-23 20:45:35,141 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:45:35,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:45:35,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:35,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:45:35,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:45:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:45:35,733 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:45:35,733 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 20:45:35,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:45:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:45:35,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:45:36,241 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:45:36,263 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:45:36,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-23 20:45:36,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:45:36,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:45:36,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:45:36,266 INFO L87 Difference]: Start difference. First operand 12199 states and 14547 transitions. Second operand 7 states. [2018-10-23 20:45:56,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:45:56,670 INFO L93 Difference]: Finished difference Result 37706 states and 45491 transitions. [2018-10-23 20:45:56,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 20:45:56,670 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2018-10-23 20:45:56,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:45:56,717 INFO L225 Difference]: With dead ends: 37706 [2018-10-23 20:45:56,717 INFO L226 Difference]: Without dead ends: 21179 [2018-10-23 20:45:56,736 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-23 20:45:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21179 states. [2018-10-23 20:45:57,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21179 to 18151. [2018-10-23 20:45:57,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18151 states. [2018-10-23 20:45:57,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18151 states to 18151 states and 20399 transitions. [2018-10-23 20:45:57,053 INFO L78 Accepts]: Start accepts. Automaton has 18151 states and 20399 transitions. Word has length 274 [2018-10-23 20:45:57,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:45:57,054 INFO L481 AbstractCegarLoop]: Abstraction has 18151 states and 20399 transitions. [2018-10-23 20:45:57,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:45:57,055 INFO L276 IsEmpty]: Start isEmpty. Operand 18151 states and 20399 transitions. [2018-10-23 20:45:57,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-10-23 20:45:57,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:45:57,066 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 20:45:57,067 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:45:57,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:45:57,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1503008822, now seen corresponding path program 1 times [2018-10-23 20:45:57,067 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:45:57,067 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:45:57,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:57,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:45:57,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:45:57,826 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-23 20:45:58,033 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-23 20:45:58,219 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 288 proven. 83 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-10-23 20:45:58,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:45:58,220 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 20:45:58,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:45:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:45:58,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:45:58,816 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 288 proven. 83 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-10-23 20:45:58,848 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:45:58,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-10-23 20:45:58,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:45:58,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:45:58,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:45:58,851 INFO L87 Difference]: Start difference. First operand 18151 states and 20399 transitions. Second operand 9 states. [2018-10-23 20:46:09,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:46:09,113 INFO L93 Difference]: Finished difference Result 38007 states and 42625 transitions. [2018-10-23 20:46:09,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:46:09,114 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 367 [2018-10-23 20:46:09,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:46:09,152 INFO L225 Difference]: With dead ends: 38007 [2018-10-23 20:46:09,153 INFO L226 Difference]: Without dead ends: 20287 [2018-10-23 20:46:09,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-10-23 20:46:09,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20287 states. [2018-10-23 20:46:09,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20287 to 19855. [2018-10-23 20:46:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19855 states. [2018-10-23 20:46:09,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19855 states to 19855 states and 22191 transitions. [2018-10-23 20:46:09,441 INFO L78 Accepts]: Start accepts. Automaton has 19855 states and 22191 transitions. Word has length 367 [2018-10-23 20:46:09,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:46:09,441 INFO L481 AbstractCegarLoop]: Abstraction has 19855 states and 22191 transitions. [2018-10-23 20:46:09,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 20:46:09,442 INFO L276 IsEmpty]: Start isEmpty. Operand 19855 states and 22191 transitions. [2018-10-23 20:46:09,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-10-23 20:46:09,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:46:09,458 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:46:09,458 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:46:09,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:46:09,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1838844559, now seen corresponding path program 1 times [2018-10-23 20:46:09,459 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:46:09,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:46:09,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:46:09,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:46:09,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:46:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:46:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 149 proven. 291 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:46:10,898 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:46:10,898 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 20:46:10,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:46:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:46:11,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:46:12,380 WARN L179 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 104 DAG size of output: 30 [2018-10-23 20:46:12,908 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-10-23 20:46:12,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:46:12,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 20:46:12,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:46:12,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:46:12,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:46:12,931 INFO L87 Difference]: Start difference. First operand 19855 states and 22191 transitions. Second operand 7 states. [2018-10-23 20:46:13,399 WARN L179 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-10-23 20:46:20,320 WARN L179 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-23 20:46:25,678 WARN L179 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-23 20:46:55,123 WARN L179 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-10-23 20:47:53,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:47:53,883 INFO L93 Difference]: Finished difference Result 78649 states and 88670 transitions. [2018-10-23 20:47:53,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 20:47:53,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2018-10-23 20:47:53,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:47:53,965 INFO L225 Difference]: With dead ends: 78649 [2018-10-23 20:47:53,965 INFO L226 Difference]: Without dead ends: 58796 [2018-10-23 20:47:53,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-10-23 20:47:54,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58796 states. [2018-10-23 20:47:54,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58796 to 47153. [2018-10-23 20:47:54,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47153 states. [2018-10-23 20:47:54,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47153 states to 47153 states and 52126 transitions. [2018-10-23 20:47:54,588 INFO L78 Accepts]: Start accepts. Automaton has 47153 states and 52126 transitions. Word has length 419 [2018-10-23 20:47:54,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:47:54,589 INFO L481 AbstractCegarLoop]: Abstraction has 47153 states and 52126 transitions. [2018-10-23 20:47:54,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:47:54,589 INFO L276 IsEmpty]: Start isEmpty. Operand 47153 states and 52126 transitions. [2018-10-23 20:47:54,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-10-23 20:47:54,608 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:47:54,609 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:54,609 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:47:54,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:47:54,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1167941486, now seen corresponding path program 1 times [2018-10-23 20:47:54,610 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:47:54,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:47:54,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:47:54,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:47:54,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:47:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:47:55,159 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-10-23 20:47:55,160 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:47:55,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:47:55,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:47:55,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:47:55,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:47:55,161 INFO L87 Difference]: Start difference. First operand 47153 states and 52126 transitions. Second operand 4 states. [2018-10-23 20:48:02,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:48:02,505 INFO L93 Difference]: Finished difference Result 116062 states and 129230 transitions. [2018-10-23 20:48:02,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:48:02,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 423 [2018-10-23 20:48:02,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:48:02,585 INFO L225 Difference]: With dead ends: 116062 [2018-10-23 20:48:02,586 INFO L226 Difference]: Without dead ends: 63343 [2018-10-23 20:48:02,621 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:48:02,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63343 states. [2018-10-23 20:48:03,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63343 to 45843. [2018-10-23 20:48:03,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45843 states. [2018-10-23 20:48:03,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45843 states to 45843 states and 50314 transitions. [2018-10-23 20:48:03,236 INFO L78 Accepts]: Start accepts. Automaton has 45843 states and 50314 transitions. Word has length 423 [2018-10-23 20:48:03,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:48:03,237 INFO L481 AbstractCegarLoop]: Abstraction has 45843 states and 50314 transitions. [2018-10-23 20:48:03,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:48:03,237 INFO L276 IsEmpty]: Start isEmpty. Operand 45843 states and 50314 transitions. [2018-10-23 20:48:03,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-10-23 20:48:03,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:48:03,260 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:48:03,260 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:48:03,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:48:03,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1727056150, now seen corresponding path program 1 times [2018-10-23 20:48:03,261 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:48:03,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:48:03,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:03,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:48:03,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:48:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 411 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-10-23 20:48:03,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:48:03,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:48:03,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:48:03,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:48:03,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:48:03,616 INFO L87 Difference]: Start difference. First operand 45843 states and 50314 transitions. Second operand 3 states. [2018-10-23 20:48:07,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:48:07,827 INFO L93 Difference]: Finished difference Result 105742 states and 116752 transitions. [2018-10-23 20:48:07,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:48:07,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 467 [2018-10-23 20:48:07,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:48:07,882 INFO L225 Difference]: With dead ends: 105742 [2018-10-23 20:48:07,882 INFO L226 Difference]: Without dead ends: 54313 [2018-10-23 20:48:07,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:48:07,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54313 states. [2018-10-23 20:48:08,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54313 to 47052. [2018-10-23 20:48:08,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47052 states. [2018-10-23 20:48:08,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47052 states to 47052 states and 51342 transitions. [2018-10-23 20:48:08,790 INFO L78 Accepts]: Start accepts. Automaton has 47052 states and 51342 transitions. Word has length 467 [2018-10-23 20:48:08,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:48:08,791 INFO L481 AbstractCegarLoop]: Abstraction has 47052 states and 51342 transitions. [2018-10-23 20:48:08,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:48:08,791 INFO L276 IsEmpty]: Start isEmpty. Operand 47052 states and 51342 transitions. [2018-10-23 20:48:08,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2018-10-23 20:48:08,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:48:08,815 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-23 20:48:08,815 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:48:08,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:48:08,816 INFO L82 PathProgramCache]: Analyzing trace with hash -854931124, now seen corresponding path program 1 times [2018-10-23 20:48:08,816 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:48:08,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:48:08,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:08,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:48:08,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:48:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 411 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-10-23 20:48:09,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:48:09,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:48:09,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:48:09,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:48:09,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:48:09,416 INFO L87 Difference]: Start difference. First operand 47052 states and 51342 transitions. Second operand 4 states. [2018-10-23 20:48:16,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:48:16,347 INFO L93 Difference]: Finished difference Result 116712 states and 127337 transitions. [2018-10-23 20:48:16,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:48:16,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 486 [2018-10-23 20:48:16,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:48:16,412 INFO L225 Difference]: With dead ends: 116712 [2018-10-23 20:48:16,412 INFO L226 Difference]: Without dead ends: 64950 [2018-10-23 20:48:16,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:48:16,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64950 states. [2018-10-23 20:48:16,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64950 to 54708. [2018-10-23 20:48:16,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54708 states. [2018-10-23 20:48:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54708 states to 54708 states and 58923 transitions. [2018-10-23 20:48:16,968 INFO L78 Accepts]: Start accepts. Automaton has 54708 states and 58923 transitions. Word has length 486 [2018-10-23 20:48:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:48:16,969 INFO L481 AbstractCegarLoop]: Abstraction has 54708 states and 58923 transitions. [2018-10-23 20:48:16,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:48:16,970 INFO L276 IsEmpty]: Start isEmpty. Operand 54708 states and 58923 transitions. [2018-10-23 20:48:16,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2018-10-23 20:48:16,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:48:16,983 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:48:16,983 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:48:16,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:48:16,984 INFO L82 PathProgramCache]: Analyzing trace with hash -942093832, now seen corresponding path program 1 times [2018-10-23 20:48:16,984 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:48:16,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:48:16,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:16,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:48:16,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:48:17,615 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 5 [2018-10-23 20:48:18,383 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 483 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2018-10-23 20:48:18,383 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:48:18,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:48:18,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:48:18,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:48:18,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:48:18,385 INFO L87 Difference]: Start difference. First operand 54708 states and 58923 transitions. Second operand 4 states. [2018-10-23 20:48:23,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:48:23,262 INFO L93 Difference]: Finished difference Result 128166 states and 138291 transitions. [2018-10-23 20:48:23,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:48:23,262 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 519 [2018-10-23 20:48:23,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:48:23,343 INFO L225 Difference]: With dead ends: 128166 [2018-10-23 20:48:23,344 INFO L226 Difference]: Without dead ends: 73459 [2018-10-23 20:48:23,380 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 20:48:23,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73459 states. [2018-10-23 20:48:23,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73459 to 64062. [2018-10-23 20:48:23,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64062 states. [2018-10-23 20:48:23,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64062 states to 64062 states and 68345 transitions. [2018-10-23 20:48:23,977 INFO L78 Accepts]: Start accepts. Automaton has 64062 states and 68345 transitions. Word has length 519 [2018-10-23 20:48:23,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:48:23,977 INFO L481 AbstractCegarLoop]: Abstraction has 64062 states and 68345 transitions. [2018-10-23 20:48:23,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:48:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 64062 states and 68345 transitions. [2018-10-23 20:48:23,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2018-10-23 20:48:23,997 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:48:23,998 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:48:23,998 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:48:23,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:48:23,999 INFO L82 PathProgramCache]: Analyzing trace with hash -955734601, now seen corresponding path program 1 times [2018-10-23 20:48:23,999 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:48:23,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:48:23,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:23,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:48:24,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:48:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-10-23 20:48:25,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:48:25,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:48:25,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:48:25,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:48:25,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:48:25,099 INFO L87 Difference]: Start difference. First operand 64062 states and 68345 transitions. Second operand 3 states. [2018-10-23 20:48:27,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:48:27,980 INFO L93 Difference]: Finished difference Result 127695 states and 136259 transitions. [2018-10-23 20:48:27,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:48:27,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 622 [2018-10-23 20:48:27,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:48:28,037 INFO L225 Difference]: With dead ends: 127695 [2018-10-23 20:48:28,038 INFO L226 Difference]: Without dead ends: 64061 [2018-10-23 20:48:28,065 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 4 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 20:48:28,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64061 states. [2018-10-23 20:48:28,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64061 to 64061. [2018-10-23 20:48:28,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64061 states. [2018-10-23 20:48:28,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64061 states to 64061 states and 68336 transitions. [2018-10-23 20:48:28,742 INFO L78 Accepts]: Start accepts. Automaton has 64061 states and 68336 transitions. Word has length 622 [2018-10-23 20:48:28,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:48:28,742 INFO L481 AbstractCegarLoop]: Abstraction has 64061 states and 68336 transitions. [2018-10-23 20:48:28,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:48:28,743 INFO L276 IsEmpty]: Start isEmpty. Operand 64061 states and 68336 transitions. [2018-10-23 20:48:28,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2018-10-23 20:48:28,780 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:48:28,781 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:48:28,781 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:48:28,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:48:28,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1760215615, now seen corresponding path program 1 times [2018-10-23 20:48:28,782 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:48:28,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:48:28,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:28,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:48:28,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:48:31,143 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 199 proven. 521 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-23 20:48:31,144 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:48:31,144 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 20:48:31,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:48:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:48:31,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:48:31,729 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 14 [2018-10-23 20:48:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 531 proven. 190 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-23 20:48:33,047 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:48:33,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-10-23 20:48:33,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:48:33,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:48:33,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:48:33,051 INFO L87 Difference]: Start difference. First operand 64061 states and 68336 transitions. Second operand 8 states. [2018-10-23 20:48:43,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:48:43,945 INFO L93 Difference]: Finished difference Result 139646 states and 148772 transitions. [2018-10-23 20:48:43,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 20:48:43,946 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 812 [2018-10-23 20:48:43,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:48:44,017 INFO L225 Difference]: With dead ends: 139646 [2018-10-23 20:48:44,018 INFO L226 Difference]: Without dead ends: 75584 [2018-10-23 20:48:44,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 810 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:48:44,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75584 states. [2018-10-23 20:48:44,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75584 to 63200. [2018-10-23 20:48:44,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63200 states. [2018-10-23 20:48:44,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63200 states to 63200 states and 66998 transitions. [2018-10-23 20:48:44,675 INFO L78 Accepts]: Start accepts. Automaton has 63200 states and 66998 transitions. Word has length 812 [2018-10-23 20:48:44,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:48:44,675 INFO L481 AbstractCegarLoop]: Abstraction has 63200 states and 66998 transitions. [2018-10-23 20:48:44,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 20:48:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 63200 states and 66998 transitions. [2018-10-23 20:48:44,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2018-10-23 20:48:44,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:48:44,712 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:48:44,712 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:48:44,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:48:44,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1010400958, now seen corresponding path program 1 times [2018-10-23 20:48:44,712 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:48:44,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:48:44,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:44,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:48:44,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:48:46,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2018-10-23 20:48:46,045 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:48:46,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:48:46,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:48:46,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:48:46,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:48:46,046 INFO L87 Difference]: Start difference. First operand 63200 states and 66998 transitions. Second operand 3 states. Received shutdown request... [2018-10-23 20:48:46,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:48:46,638 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:48:46,643 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:48:46,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:48:46 BoogieIcfgContainer [2018-10-23 20:48:46,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:48:46,644 INFO L168 Benchmark]: Toolchain (without parser) took 244497.95 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.5 GB). Peak memory consumption was 802.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:48:46,646 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:48:46,646 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1619.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:48:46,647 INFO L168 Benchmark]: Boogie Procedure Inliner took 546.77 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -929.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:48:46,648 INFO L168 Benchmark]: Boogie Preprocessor took 401.86 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:48:46,649 INFO L168 Benchmark]: RCFGBuilder took 10438.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 493.7 MB). Peak memory consumption was 493.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:48:46,649 INFO L168 Benchmark]: TraceAbstraction took 231485.94 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 264.5 MB. Max. memory is 7.1 GB. [2018-10-23 20:48:46,654 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1619.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 546.77 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -929.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 401.86 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10438.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 493.7 MB). Peak memory consumption was 493.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231485.94 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 264.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 161). Cancelled while BasicCegarLoop was constructing difference of abstraction (63200states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (859 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 231.4s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 207.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6708 SDtfs, 17914 SDslu, 3175 SDs, 0 SdLazy, 49904 SolverSat, 7205 SolverUnsat, 36 SolverUnknown, 0 SolverNotchecked, 187.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1941 GetRequests, 1886 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64062occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.8s AutomataMinimizationTime, 13 MinimizatonAttempts, 71925 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 7730 NumberOfCodeBlocks, 7730 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 7712 ConstructedInterpolants, 242 QuantifiedInterpolants, 17601280 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2347 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 6685/8019 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown