java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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/Problem15_label08_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:28:33,284 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:28:33,286 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:28:33,299 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:28:33,300 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:28:33,301 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:28:33,302 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:28:33,304 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:28:33,306 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:28:33,306 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:28:33,307 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:28:33,308 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:28:33,309 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:28:33,310 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:28:33,311 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:28:33,311 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:28:33,312 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:28:33,314 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:28:33,316 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:28:33,318 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:28:33,319 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:28:33,320 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:28:33,323 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 21:28:33,323 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 21:28:33,324 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 21:28:33,324 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 21:28:33,326 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 21:28:33,326 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 21:28:33,327 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 21:28:33,328 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 21:28:33,329 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 21:28:33,329 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 21:28:33,332 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:28:33,347 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:28:33,347 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:28:33,348 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:28:33,348 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:28:33,349 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:28:33,349 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:28:33,349 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:28:33,350 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:28:33,350 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:28:33,350 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:28:33,350 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:28:33,351 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:28:33,351 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:28:33,351 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:28:33,351 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:28:33,351 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:28:33,351 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:28:33,352 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:28:33,352 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:28:33,352 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:28:33,352 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:28:33,353 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:28:33,353 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:28:33,353 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:28:33,353 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:28:33,353 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:28:33,353 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:28:33,354 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:28:33,409 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:28:33,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:28:33,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:28:33,434 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:28:33,434 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:28:33,435 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label08_true-unreach-call.c [2018-11-06 21:28:33,500 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72582fceb/0e3371b2c50e4d1c941e4fb4f56ad768/FLAGc68c3e4b6 [2018-11-06 21:28:34,183 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:28:34,184 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label08_true-unreach-call.c [2018-11-06 21:28:34,211 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72582fceb/0e3371b2c50e4d1c941e4fb4f56ad768/FLAGc68c3e4b6 [2018-11-06 21:28:34,232 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72582fceb/0e3371b2c50e4d1c941e4fb4f56ad768 [2018-11-06 21:28:34,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:28:34,245 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:28:34,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:28:34,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:28:34,252 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:28:34,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:28:34" (1/1) ... [2018-11-06 21:28:34,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@710be24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:34, skipping insertion in model container [2018-11-06 21:28:34,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:28:34" (1/1) ... [2018-11-06 21:28:34,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:28:34,366 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:28:35,289 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:28:35,294 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:28:35,542 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:28:35,565 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:28:35,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:35 WrapperNode [2018-11-06 21:28:35,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:28:35,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:28:35,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:28:35,568 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:28:35,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:35" (1/1) ... [2018-11-06 21:28:35,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:35" (1/1) ... [2018-11-06 21:28:35,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:28:35,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:28:35,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:28:35,969 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:28:35,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:35" (1/1) ... [2018-11-06 21:28:35,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:35" (1/1) ... [2018-11-06 21:28:36,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:35" (1/1) ... [2018-11-06 21:28:36,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:35" (1/1) ... [2018-11-06 21:28:36,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:35" (1/1) ... [2018-11-06 21:28:36,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:35" (1/1) ... [2018-11-06 21:28:36,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:35" (1/1) ... [2018-11-06 21:28:36,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:28:36,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:28:36,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:28:36,204 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:28:36,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:28:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:28:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:28:36,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:28:42,731 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:28:42,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:28:42 BoogieIcfgContainer [2018-11-06 21:28:42,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:28:42,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:28:42,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:28:42,738 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:28:42,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:28:34" (1/3) ... [2018-11-06 21:28:42,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9a13db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:28:42, skipping insertion in model container [2018-11-06 21:28:42,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:35" (2/3) ... [2018-11-06 21:28:42,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9a13db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:28:42, skipping insertion in model container [2018-11-06 21:28:42,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:28:42" (3/3) ... [2018-11-06 21:28:42,742 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label08_true-unreach-call.c [2018-11-06 21:28:42,753 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:28:42,763 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:28:42,782 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:28:42,833 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:28:42,834 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:28:42,834 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:28:42,834 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:28:42,834 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:28:42,834 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:28:42,835 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:28:42,835 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:28:42,835 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:28:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-11-06 21:28:42,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-06 21:28:42,888 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:28:42,890 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] [2018-11-06 21:28:42,892 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:28:42,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:28:42,899 INFO L82 PathProgramCache]: Analyzing trace with hash -2139005982, now seen corresponding path program 1 times [2018-11-06 21:28:42,901 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:28:42,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:28:42,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:28:42,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:28:42,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:28:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:28:43,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:28:43,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:28:43,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:28:43,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:28:43,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:28:43,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:28:43,396 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-11-06 21:28:50,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:28:50,293 INFO L93 Difference]: Finished difference Result 1474 states and 2723 transitions. [2018-11-06 21:28:50,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:28:50,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-11-06 21:28:50,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:28:50,327 INFO L225 Difference]: With dead ends: 1474 [2018-11-06 21:28:50,328 INFO L226 Difference]: Without dead ends: 1042 [2018-11-06 21:28:50,334 INFO L604 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 [2018-11-06 21:28:50,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2018-11-06 21:28:50,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1040. [2018-11-06 21:28:50,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2018-11-06 21:28:50,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1638 transitions. [2018-11-06 21:28:50,467 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1638 transitions. Word has length 52 [2018-11-06 21:28:50,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:28:50,468 INFO L480 AbstractCegarLoop]: Abstraction has 1040 states and 1638 transitions. [2018-11-06 21:28:50,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:28:50,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1638 transitions. [2018-11-06 21:28:50,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-06 21:28:50,474 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:28:50,474 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] [2018-11-06 21:28:50,475 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:28:50,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:28:50,475 INFO L82 PathProgramCache]: Analyzing trace with hash -2043425283, now seen corresponding path program 1 times [2018-11-06 21:28:50,476 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:28:50,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:28:50,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:28:50,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:28:50,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:28:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:28:50,948 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:28:50,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:28:50,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:28:50,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:28:50,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:28:50,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:28:50,955 INFO L87 Difference]: Start difference. First operand 1040 states and 1638 transitions. Second operand 4 states. [2018-11-06 21:28:57,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:28:57,098 INFO L93 Difference]: Finished difference Result 3887 states and 6230 transitions. [2018-11-06 21:28:57,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:28:57,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2018-11-06 21:28:57,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:28:57,116 INFO L225 Difference]: With dead ends: 3887 [2018-11-06 21:28:57,116 INFO L226 Difference]: Without dead ends: 2849 [2018-11-06 21:28:57,120 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:28:57,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2018-11-06 21:28:57,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 2844. [2018-11-06 21:28:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2844 states. [2018-11-06 21:28:57,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 4039 transitions. [2018-11-06 21:28:57,192 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 4039 transitions. Word has length 118 [2018-11-06 21:28:57,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:28:57,193 INFO L480 AbstractCegarLoop]: Abstraction has 2844 states and 4039 transitions. [2018-11-06 21:28:57,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:28:57,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 4039 transitions. [2018-11-06 21:28:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-11-06 21:28:57,204 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:28:57,204 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, 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] [2018-11-06 21:28:57,205 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:28:57,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:28:57,205 INFO L82 PathProgramCache]: Analyzing trace with hash -2102953207, now seen corresponding path program 1 times [2018-11-06 21:28:57,205 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:28:57,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:28:57,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:28:57,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:28:57,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:28:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:28:57,887 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 99 proven. 4 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-11-06 21:28:57,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:28:57,888 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:28:57,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:28:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:28:58,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:28:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:28:58,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:28:58,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 21:28:58,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:28:58,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:28:58,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:28:58,197 INFO L87 Difference]: Start difference. First operand 2844 states and 4039 transitions. Second operand 4 states. [2018-11-06 21:29:02,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:29:02,809 INFO L93 Difference]: Finished difference Result 10857 states and 15533 transitions. [2018-11-06 21:29:02,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:29:02,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 264 [2018-11-06 21:29:02,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:29:02,852 INFO L225 Difference]: With dead ends: 10857 [2018-11-06 21:29:02,852 INFO L226 Difference]: Without dead ends: 8015 [2018-11-06 21:29:02,858 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:29:02,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8015 states. [2018-11-06 21:29:02,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8015 to 4646. [2018-11-06 21:29:02,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4646 states. [2018-11-06 21:29:02,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4646 states to 4646 states and 6263 transitions. [2018-11-06 21:29:02,977 INFO L78 Accepts]: Start accepts. Automaton has 4646 states and 6263 transitions. Word has length 264 [2018-11-06 21:29:02,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:29:02,978 INFO L480 AbstractCegarLoop]: Abstraction has 4646 states and 6263 transitions. [2018-11-06 21:29:02,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:29:02,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4646 states and 6263 transitions. [2018-11-06 21:29:02,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-11-06 21:29:02,987 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:02,987 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:29:02,988 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:02,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:02,988 INFO L82 PathProgramCache]: Analyzing trace with hash 147879681, now seen corresponding path program 1 times [2018-11-06 21:29:02,988 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:02,988 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:02,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:02,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:02,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:03,695 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-11-06 21:29:03,997 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-06 21:29:03,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:29:03,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:29:03,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:29:03,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:29:03,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:29:03,999 INFO L87 Difference]: Start difference. First operand 4646 states and 6263 transitions. Second operand 5 states. [2018-11-06 21:29:08,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:29:08,138 INFO L93 Difference]: Finished difference Result 11092 states and 14512 transitions. [2018-11-06 21:29:08,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:29:08,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2018-11-06 21:29:08,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:29:08,167 INFO L225 Difference]: With dead ends: 11092 [2018-11-06 21:29:08,168 INFO L226 Difference]: Without dead ends: 6448 [2018-11-06 21:29:08,176 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:29:08,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6448 states. [2018-11-06 21:29:08,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6448 to 6147. [2018-11-06 21:29:08,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6147 states. [2018-11-06 21:29:08,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6147 states to 6147 states and 7862 transitions. [2018-11-06 21:29:08,300 INFO L78 Accepts]: Start accepts. Automaton has 6147 states and 7862 transitions. Word has length 332 [2018-11-06 21:29:08,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:29:08,301 INFO L480 AbstractCegarLoop]: Abstraction has 6147 states and 7862 transitions. [2018-11-06 21:29:08,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:29:08,302 INFO L276 IsEmpty]: Start isEmpty. Operand 6147 states and 7862 transitions. [2018-11-06 21:29:08,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-11-06 21:29:08,314 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:08,315 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:29:08,315 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:08,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:08,316 INFO L82 PathProgramCache]: Analyzing trace with hash -2100025585, now seen corresponding path program 1 times [2018-11-06 21:29:08,316 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:08,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:08,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:08,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:08,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:08,911 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:29:08,912 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:29:08,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:29:08,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:29:08,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:29:08,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:29:08,913 INFO L87 Difference]: Start difference. First operand 6147 states and 7862 transitions. Second operand 4 states. [2018-11-06 21:29:13,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:29:13,113 INFO L93 Difference]: Finished difference Result 15298 states and 20011 transitions. [2018-11-06 21:29:13,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:29:13,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 406 [2018-11-06 21:29:13,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:29:13,156 INFO L225 Difference]: With dead ends: 15298 [2018-11-06 21:29:13,156 INFO L226 Difference]: Without dead ends: 9153 [2018-11-06 21:29:13,164 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:29:13,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9153 states. [2018-11-06 21:29:13,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9153 to 9150. [2018-11-06 21:29:13,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9150 states. [2018-11-06 21:29:13,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9150 states to 9150 states and 11448 transitions. [2018-11-06 21:29:13,305 INFO L78 Accepts]: Start accepts. Automaton has 9150 states and 11448 transitions. Word has length 406 [2018-11-06 21:29:13,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:29:13,306 INFO L480 AbstractCegarLoop]: Abstraction has 9150 states and 11448 transitions. [2018-11-06 21:29:13,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:29:13,306 INFO L276 IsEmpty]: Start isEmpty. Operand 9150 states and 11448 transitions. [2018-11-06 21:29:13,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-11-06 21:29:13,321 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:13,321 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:29:13,322 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:13,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:13,322 INFO L82 PathProgramCache]: Analyzing trace with hash 593964008, now seen corresponding path program 1 times [2018-11-06 21:29:13,322 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:13,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:13,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:13,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:13,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:13,774 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-06 21:29:14,060 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-11-06 21:29:14,619 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 418 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-06 21:29:14,620 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:29:14,620 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:29:14,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:14,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:29:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 381 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-11-06 21:29:15,081 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:29:15,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-11-06 21:29:15,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:29:15,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:29:15,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:29:15,084 INFO L87 Difference]: Start difference. First operand 9150 states and 11448 transitions. Second operand 8 states. [2018-11-06 21:29:23,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:29:23,816 INFO L93 Difference]: Finished difference Result 22668 states and 27579 transitions. [2018-11-06 21:29:23,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-06 21:29:23,818 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 482 [2018-11-06 21:29:23,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:29:23,841 INFO L225 Difference]: With dead ends: 22668 [2018-11-06 21:29:23,841 INFO L226 Difference]: Without dead ends: 9445 [2018-11-06 21:29:23,856 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 485 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-11-06 21:29:23,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9445 states. [2018-11-06 21:29:24,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9445 to 9145. [2018-11-06 21:29:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9145 states. [2018-11-06 21:29:24,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9145 states to 9145 states and 10683 transitions. [2018-11-06 21:29:24,101 INFO L78 Accepts]: Start accepts. Automaton has 9145 states and 10683 transitions. Word has length 482 [2018-11-06 21:29:24,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:29:24,102 INFO L480 AbstractCegarLoop]: Abstraction has 9145 states and 10683 transitions. [2018-11-06 21:29:24,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 21:29:24,102 INFO L276 IsEmpty]: Start isEmpty. Operand 9145 states and 10683 transitions. [2018-11-06 21:29:24,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2018-11-06 21:29:24,120 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:24,120 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:29:24,121 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:24,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:24,121 INFO L82 PathProgramCache]: Analyzing trace with hash 404113246, now seen corresponding path program 1 times [2018-11-06 21:29:24,121 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:24,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:24,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:24,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:24,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:24,754 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-06 21:29:25,347 WARN L179 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2018-11-06 21:29:26,093 WARN L179 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 22 [2018-11-06 21:29:26,841 WARN L179 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 27 [2018-11-06 21:29:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 315 proven. 136 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-11-06 21:29:27,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:29:27,575 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:29:27,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:27,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:29:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 383 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-11-06 21:29:28,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:29:28,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2018-11-06 21:29:28,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 21:29:28,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 21:29:28,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:29:28,004 INFO L87 Difference]: Start difference. First operand 9145 states and 10683 transitions. Second operand 9 states. [2018-11-06 21:29:35,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:29:35,329 INFO L93 Difference]: Finished difference Result 18706 states and 21787 transitions. [2018-11-06 21:29:35,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-06 21:29:35,330 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 558 [2018-11-06 21:29:35,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:29:35,354 INFO L225 Difference]: With dead ends: 18706 [2018-11-06 21:29:35,354 INFO L226 Difference]: Without dead ends: 9563 [2018-11-06 21:29:35,364 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 562 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-06 21:29:35,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9563 states. [2018-11-06 21:29:35,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9563 to 9141. [2018-11-06 21:29:35,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9141 states. [2018-11-06 21:29:35,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9141 states to 9141 states and 10091 transitions. [2018-11-06 21:29:35,480 INFO L78 Accepts]: Start accepts. Automaton has 9141 states and 10091 transitions. Word has length 558 [2018-11-06 21:29:35,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:29:35,481 INFO L480 AbstractCegarLoop]: Abstraction has 9141 states and 10091 transitions. [2018-11-06 21:29:35,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 21:29:35,481 INFO L276 IsEmpty]: Start isEmpty. Operand 9141 states and 10091 transitions. [2018-11-06 21:29:35,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2018-11-06 21:29:35,503 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:35,503 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:29:35,504 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:35,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:35,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1175997957, now seen corresponding path program 1 times [2018-11-06 21:29:35,504 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:35,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:35,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:35,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:35,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-11-06 21:29:36,451 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:29:36,451 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:29:36,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:36,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:29:36,993 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 16 [2018-11-06 21:29:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-11-06 21:29:38,153 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:29:38,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-11-06 21:29:38,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:29:38,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:29:38,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:29:38,155 INFO L87 Difference]: Start difference. First operand 9141 states and 10091 transitions. Second operand 7 states. [2018-11-06 21:29:46,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:29:46,688 INFO L93 Difference]: Finished difference Result 35300 states and 39221 transitions. [2018-11-06 21:29:46,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 21:29:46,688 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 596 [2018-11-06 21:29:46,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:29:46,722 INFO L225 Difference]: With dead ends: 35300 [2018-11-06 21:29:46,722 INFO L226 Difference]: Without dead ends: 26161 [2018-11-06 21:29:46,737 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:29:46,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26161 states. [2018-11-06 21:29:46,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26161 to 14285. [2018-11-06 21:29:46,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14285 states. [2018-11-06 21:29:47,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14285 states to 14285 states and 15414 transitions. [2018-11-06 21:29:47,012 INFO L78 Accepts]: Start accepts. Automaton has 14285 states and 15414 transitions. Word has length 596 [2018-11-06 21:29:47,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:29:47,013 INFO L480 AbstractCegarLoop]: Abstraction has 14285 states and 15414 transitions. [2018-11-06 21:29:47,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:29:47,014 INFO L276 IsEmpty]: Start isEmpty. Operand 14285 states and 15414 transitions. [2018-11-06 21:29:47,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2018-11-06 21:29:47,029 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:47,030 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:29:47,030 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:47,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:47,031 INFO L82 PathProgramCache]: Analyzing trace with hash -470184576, now seen corresponding path program 1 times [2018-11-06 21:29:47,031 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:47,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:47,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:47,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:47,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:48,035 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 442 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-11-06 21:29:48,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:29:48,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:29:48,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:29:48,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:29:48,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:29:48,037 INFO L87 Difference]: Start difference. First operand 14285 states and 15414 transitions. Second operand 3 states. [2018-11-06 21:29:51,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:29:51,229 INFO L93 Difference]: Finished difference Result 30322 states and 32681 transitions. [2018-11-06 21:29:51,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:29:51,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 617 [2018-11-06 21:29:51,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:29:51,245 INFO L225 Difference]: With dead ends: 30322 [2018-11-06 21:29:51,245 INFO L226 Difference]: Without dead ends: 11785 [2018-11-06 21:29:51,261 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:29:51,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11785 states. [2018-11-06 21:29:51,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11785 to 7563. [2018-11-06 21:29:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7563 states. [2018-11-06 21:29:51,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7563 states to 7563 states and 7885 transitions. [2018-11-06 21:29:51,373 INFO L78 Accepts]: Start accepts. Automaton has 7563 states and 7885 transitions. Word has length 617 [2018-11-06 21:29:51,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:29:51,374 INFO L480 AbstractCegarLoop]: Abstraction has 7563 states and 7885 transitions. [2018-11-06 21:29:51,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:29:51,374 INFO L276 IsEmpty]: Start isEmpty. Operand 7563 states and 7885 transitions. [2018-11-06 21:29:51,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2018-11-06 21:29:51,387 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:51,388 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:29:51,388 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:51,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:51,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1410963826, now seen corresponding path program 1 times [2018-11-06 21:29:51,389 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:51,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:51,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:51,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:51,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:53,765 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 477 proven. 50 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-11-06 21:29:53,765 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:29:53,765 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:29:53,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:53,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:29:54,366 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-06 21:29:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 477 proven. 50 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-11-06 21:29:55,594 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:29:55,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 13 [2018-11-06 21:29:55,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-06 21:29:55,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-06 21:29:55,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-11-06 21:29:55,596 INFO L87 Difference]: Start difference. First operand 7563 states and 7885 transitions. Second operand 13 states. [2018-11-06 21:30:06,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:30:06,827 INFO L93 Difference]: Finished difference Result 25613 states and 26764 transitions. [2018-11-06 21:30:06,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-06 21:30:06,827 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 727 [2018-11-06 21:30:06,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:30:06,848 INFO L225 Difference]: With dead ends: 25613 [2018-11-06 21:30:06,848 INFO L226 Difference]: Without dead ends: 17750 [2018-11-06 21:30:06,857 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 736 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=279, Invalid=533, Unknown=0, NotChecked=0, Total=812 [2018-11-06 21:30:06,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17750 states. [2018-11-06 21:30:07,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17750 to 10864. [2018-11-06 21:30:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10864 states. [2018-11-06 21:30:07,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10864 states to 10864 states and 11238 transitions. [2018-11-06 21:30:07,029 INFO L78 Accepts]: Start accepts. Automaton has 10864 states and 11238 transitions. Word has length 727 [2018-11-06 21:30:07,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:30:07,029 INFO L480 AbstractCegarLoop]: Abstraction has 10864 states and 11238 transitions. [2018-11-06 21:30:07,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-06 21:30:07,030 INFO L276 IsEmpty]: Start isEmpty. Operand 10864 states and 11238 transitions. [2018-11-06 21:30:07,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2018-11-06 21:30:07,047 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:30:07,048 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:30:07,048 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:30:07,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:30:07,048 INFO L82 PathProgramCache]: Analyzing trace with hash 403974983, now seen corresponding path program 1 times [2018-11-06 21:30:07,049 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:30:07,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:30:07,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:07,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:30:07,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:30:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 813 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2018-11-06 21:30:07,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:30:07,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:30:07,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:30:07,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:30:07,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:30:07,895 INFO L87 Difference]: Start difference. First operand 10864 states and 11238 transitions. Second operand 4 states. [2018-11-06 21:30:10,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:30:10,206 INFO L93 Difference]: Finished difference Result 21426 states and 22172 transitions. [2018-11-06 21:30:10,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:30:10,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 825 [2018-11-06 21:30:10,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:30:10,214 INFO L225 Difference]: With dead ends: 21426 [2018-11-06 21:30:10,215 INFO L226 Difference]: Without dead ends: 10561 [2018-11-06 21:30:10,221 INFO L604 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 [2018-11-06 21:30:10,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10561 states. [2018-11-06 21:30:10,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10561 to 10561. [2018-11-06 21:30:10,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10561 states. [2018-11-06 21:30:10,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10561 states to 10561 states and 10862 transitions. [2018-11-06 21:30:10,327 INFO L78 Accepts]: Start accepts. Automaton has 10561 states and 10862 transitions. Word has length 825 [2018-11-06 21:30:10,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:30:10,327 INFO L480 AbstractCegarLoop]: Abstraction has 10561 states and 10862 transitions. [2018-11-06 21:30:10,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:30:10,327 INFO L276 IsEmpty]: Start isEmpty. Operand 10561 states and 10862 transitions. [2018-11-06 21:30:10,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2018-11-06 21:30:10,341 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:30:10,341 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:30:10,342 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:30:10,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:30:10,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1053157093, now seen corresponding path program 1 times [2018-11-06 21:30:10,342 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:30:10,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:30:10,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:10,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:30:10,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:30:11,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1049 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2018-11-06 21:30:11,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:30:11,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:30:11,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:30:11,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:30:11,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:30:11,042 INFO L87 Difference]: Start difference. First operand 10561 states and 10862 transitions. Second operand 3 states. [2018-11-06 21:30:12,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:30:12,390 INFO L93 Difference]: Finished difference Result 23220 states and 23882 transitions. [2018-11-06 21:30:12,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:30:12,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 826 [2018-11-06 21:30:12,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:30:12,401 INFO L225 Difference]: With dead ends: 23220 [2018-11-06 21:30:12,401 INFO L226 Difference]: Without dead ends: 12659 [2018-11-06 21:30:12,408 INFO L604 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 [2018-11-06 21:30:12,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12659 states. [2018-11-06 21:30:12,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12659 to 11453. [2018-11-06 21:30:12,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11453 states. [2018-11-06 21:30:12,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11453 states to 11453 states and 11742 transitions. [2018-11-06 21:30:12,531 INFO L78 Accepts]: Start accepts. Automaton has 11453 states and 11742 transitions. Word has length 826 [2018-11-06 21:30:12,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:30:12,532 INFO L480 AbstractCegarLoop]: Abstraction has 11453 states and 11742 transitions. [2018-11-06 21:30:12,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:30:12,532 INFO L276 IsEmpty]: Start isEmpty. Operand 11453 states and 11742 transitions. [2018-11-06 21:30:12,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2018-11-06 21:30:12,544 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:30:12,545 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:30:12,545 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:30:12,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:30:12,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1939654473, now seen corresponding path program 1 times [2018-11-06 21:30:12,545 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:30:12,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:30:12,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:12,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:30:12,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:30:13,058 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3 [2018-11-06 21:30:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 690 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2018-11-06 21:30:13,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:30:13,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:30:13,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:30:13,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:30:13,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:30:13,529 INFO L87 Difference]: Start difference. First operand 11453 states and 11742 transitions. Second operand 3 states. [2018-11-06 21:30:14,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:30:14,796 INFO L93 Difference]: Finished difference Result 27110 states and 27816 transitions. [2018-11-06 21:30:14,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:30:14,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 892 [2018-11-06 21:30:14,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:30:14,812 INFO L225 Difference]: With dead ends: 27110 [2018-11-06 21:30:14,812 INFO L226 Difference]: Without dead ends: 15959 [2018-11-06 21:30:14,819 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:30:14,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15959 states. [2018-11-06 21:30:14,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15959 to 13550. [2018-11-06 21:30:14,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13550 states. [2018-11-06 21:30:14,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13550 states to 13550 states and 13882 transitions. [2018-11-06 21:30:14,971 INFO L78 Accepts]: Start accepts. Automaton has 13550 states and 13882 transitions. Word has length 892 [2018-11-06 21:30:14,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:30:14,972 INFO L480 AbstractCegarLoop]: Abstraction has 13550 states and 13882 transitions. [2018-11-06 21:30:14,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:30:14,972 INFO L276 IsEmpty]: Start isEmpty. Operand 13550 states and 13882 transitions. [2018-11-06 21:30:14,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2018-11-06 21:30:14,989 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:30:14,990 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:30:14,990 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:30:14,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:30:14,991 INFO L82 PathProgramCache]: Analyzing trace with hash 2071518071, now seen corresponding path program 1 times [2018-11-06 21:30:14,991 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:30:14,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:30:14,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:14,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:30:14,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:30:15,757 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-06 21:30:16,339 WARN L179 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2018-11-06 21:30:16,677 WARN L179 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 22 [2018-11-06 21:30:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 658 proven. 303 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-11-06 21:30:17,866 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:30:17,866 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:30:17,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:30:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:30:18,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:30:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 775 proven. 50 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2018-11-06 21:30:19,174 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:30:19,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4] total 11 [2018-11-06 21:30:19,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-06 21:30:19,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-06 21:30:19,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-06 21:30:19,177 INFO L87 Difference]: Start difference. First operand 13550 states and 13882 transitions. Second operand 11 states. [2018-11-06 21:30:27,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:30:27,272 INFO L93 Difference]: Finished difference Result 32123 states and 32897 transitions. [2018-11-06 21:30:27,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-06 21:30:27,273 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 977 [2018-11-06 21:30:27,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:30:27,290 INFO L225 Difference]: With dead ends: 32123 [2018-11-06 21:30:27,291 INFO L226 Difference]: Without dead ends: 18575 [2018-11-06 21:30:27,300 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 991 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2018-11-06 21:30:27,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18575 states. [2018-11-06 21:30:27,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18575 to 14450. [2018-11-06 21:30:27,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14450 states. [2018-11-06 21:30:27,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14450 states to 14450 states and 14796 transitions. [2018-11-06 21:30:27,466 INFO L78 Accepts]: Start accepts. Automaton has 14450 states and 14796 transitions. Word has length 977 [2018-11-06 21:30:27,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:30:27,467 INFO L480 AbstractCegarLoop]: Abstraction has 14450 states and 14796 transitions. [2018-11-06 21:30:27,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-06 21:30:27,467 INFO L276 IsEmpty]: Start isEmpty. Operand 14450 states and 14796 transitions. [2018-11-06 21:30:27,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2018-11-06 21:30:27,482 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:30:27,483 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:30:27,483 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:30:27,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:30:27,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1315706566, now seen corresponding path program 1 times [2018-11-06 21:30:27,484 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:30:27,484 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:30:27,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:27,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:30:27,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:30:28,382 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-06 21:30:28,583 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-06 21:30:28,958 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2018-11-06 21:30:29,210 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2018-11-06 21:30:32,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1307 backedges. 879 proven. 321 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-11-06 21:30:32,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:30:32,788 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:30:32,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:30:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:30:33,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:30:33,679 WARN L179 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 15 [2018-11-06 21:30:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1307 backedges. 791 proven. 50 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2018-11-06 21:30:35,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:30:35,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 4] total 21 [2018-11-06 21:30:35,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-06 21:30:35,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-06 21:30:35,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2018-11-06 21:30:35,980 INFO L87 Difference]: Start difference. First operand 14450 states and 14796 transitions. Second operand 21 states. [2018-11-06 21:30:36,891 WARN L179 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2018-11-06 21:30:39,939 WARN L179 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-11-06 21:30:46,829 WARN L179 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2018-11-06 21:30:47,821 WARN L179 SmtUtils]: Spent 938.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2018-11-06 21:30:51,643 WARN L179 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2018-11-06 21:30:52,718 WARN L179 SmtUtils]: Spent 950.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2018-11-06 21:30:53,779 WARN L179 SmtUtils]: Spent 917.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2018-11-06 21:30:54,343 WARN L179 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-11-06 21:30:56,567 WARN L179 SmtUtils]: Spent 957.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2018-11-06 21:30:59,633 WARN L179 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-11-06 21:31:00,600 WARN L179 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2018-11-06 21:31:05,818 WARN L179 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-11-06 21:31:10,602 WARN L179 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-11-06 21:31:11,017 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-11-06 21:31:12,217 WARN L179 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2018-11-06 21:31:13,956 WARN L179 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2018-11-06 21:31:17,661 WARN L179 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2018-11-06 21:31:18,663 WARN L179 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2018-11-06 21:31:23,938 WARN L179 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2018-11-06 21:31:24,451 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2018-11-06 21:31:24,716 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-11-06 21:31:26,169 WARN L179 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2018-11-06 21:31:28,081 WARN L179 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2018-11-06 21:31:34,517 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 29 [2018-11-06 21:31:39,071 WARN L179 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2018-11-06 21:31:40,288 WARN L179 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2018-11-06 21:31:42,294 WARN L179 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2018-11-06 21:32:11,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:32:11,017 INFO L93 Difference]: Finished difference Result 49827 states and 51002 transitions. [2018-11-06 21:32:11,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-11-06 21:32:11,018 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 993 [2018-11-06 21:32:11,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:32:11,018 INFO L225 Difference]: With dead ends: 49827 [2018-11-06 21:32:11,019 INFO L226 Difference]: Without dead ends: 0 [2018-11-06 21:32:11,032 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1186 GetRequests, 1071 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4682 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=2284, Invalid=10826, Unknown=0, NotChecked=0, Total=13110 [2018-11-06 21:32:11,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-06 21:32:11,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-06 21:32:11,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-06 21:32:11,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-06 21:32:11,033 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 993 [2018-11-06 21:32:11,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:32:11,034 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-06 21:32:11,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-06 21:32:11,034 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-06 21:32:11,034 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-06 21:32:11,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-06 21:32:11,887 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:12,813 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:14,361 WARN L179 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 782 DAG size of output: 695 [2018-11-06 21:32:15,097 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:15,866 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,821 WARN L179 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 782 DAG size of output: 695 [2018-11-06 21:32:16,869 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,870 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:17,138 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:17,216 WARN L179 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 494 DAG size of output: 406 Received shutdown request... [2018-11-06 21:32:29,314 WARN L187 SmtUtils]: Removed 4 from assertion stack [2018-11-06 21:32:29,315 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-11-06 21:32:29,316 INFO L168 Benchmark]: Toolchain (without parser) took 235071.27 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -230.4 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-06 21:32:29,317 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. [2018-11-06 21:32:29,317 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1320.35 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-06 21:32:29,318 INFO L168 Benchmark]: Boogie Procedure Inliner took 401.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -888.9 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2018-11-06 21:32:29,319 INFO L168 Benchmark]: Boogie Preprocessor took 234.47 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: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. [2018-11-06 21:32:29,320 INFO L168 Benchmark]: RCFGBuilder took 6529.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 309.3 MB). Peak memory consumption was 309.3 MB. Max. memory is 7.1 GB. [2018-11-06 21:32:29,320 INFO L168 Benchmark]: TraceAbstraction took 226581.30 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 202.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-06 21:32:29,325 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 1320.35 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 401.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -888.9 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 234.47 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: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6529.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 309.3 MB). Peak memory consumption was 309.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226581.30 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 202.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 160]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 678. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown