java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label17_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:38:40,834 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:38:40,836 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:38:40,848 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:38:40,848 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:38:40,849 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:38:40,850 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:38:40,852 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:38:40,854 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:38:40,854 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:38:40,855 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:38:40,856 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:38:40,857 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:38:40,857 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:38:40,859 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:38:40,859 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:38:40,860 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:38:40,862 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:38:40,864 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:38:40,866 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:38:40,867 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:38:40,868 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:38:40,870 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:38:40,871 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:38:40,871 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:38:40,872 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:38:40,873 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:38:40,874 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:38:40,875 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:38:40,878 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:38:40,879 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:38:40,879 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:38:40,884 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 18:38:40,914 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:38:40,915 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:38:40,916 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:38:40,916 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:38:40,917 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:38:40,917 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:38:40,917 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:38:40,918 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:38:40,918 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:38:40,918 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:38:40,918 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:38:40,919 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:38:40,919 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:38:40,919 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:38:40,919 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:38:40,919 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:38:40,920 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:38:40,920 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:38:40,920 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:38:40,920 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:38:40,920 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:38:40,921 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:38:40,921 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:38:40,921 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:38:40,921 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:38:40,922 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:38:40,922 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:38:40,922 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:38:40,974 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:38:40,987 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:38:40,991 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:38:40,993 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:38:40,993 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:38:40,994 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label17_false-unreach-call.c [2018-10-23 18:38:41,052 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/aceec1b2d/a7b99a1b6c6c4afc8e41d269410a26a0/FLAG677ad9cbb [2018-10-23 18:38:41,937 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:38:41,939 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label17_false-unreach-call.c [2018-10-23 18:38:41,985 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/aceec1b2d/a7b99a1b6c6c4afc8e41d269410a26a0/FLAG677ad9cbb [2018-10-23 18:38:42,007 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/aceec1b2d/a7b99a1b6c6c4afc8e41d269410a26a0 [2018-10-23 18:38:42,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:38:42,023 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:38:42,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:38:42,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:38:42,032 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:38:42,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:38:42" (1/1) ... [2018-10-23 18:38:42,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1874fc77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:42, skipping insertion in model container [2018-10-23 18:38:42,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:38:42" (1/1) ... [2018-10-23 18:38:42,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:38:42,312 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:38:44,245 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:38:44,250 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:38:45,298 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:38:45,345 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:38:45,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:45 WrapperNode [2018-10-23 18:38:45,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:38:45,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:38:45,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:38:45,347 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:38:45,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:45" (1/1) ... [2018-10-23 18:38:45,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:45" (1/1) ... [2018-10-23 18:38:46,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:38:46,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:38:46,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:38:46,470 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:38:46,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:45" (1/1) ... [2018-10-23 18:38:46,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:45" (1/1) ... [2018-10-23 18:38:46,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:45" (1/1) ... [2018-10-23 18:38:46,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:45" (1/1) ... [2018-10-23 18:38:46,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:45" (1/1) ... [2018-10-23 18:38:46,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:45" (1/1) ... [2018-10-23 18:38:47,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:45" (1/1) ... [2018-10-23 18:38:47,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:38:47,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:38:47,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:38:47,252 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:38:47,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:38:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:38:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:38:47,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:39:05,593 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:39:05,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:39:05 BoogieIcfgContainer [2018-10-23 18:39:05,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:39:05,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:39:05,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:39:05,600 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:39:05,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:38:42" (1/3) ... [2018-10-23 18:39:05,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658bb75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:39:05, skipping insertion in model container [2018-10-23 18:39:05,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:45" (2/3) ... [2018-10-23 18:39:05,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658bb75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:39:05, skipping insertion in model container [2018-10-23 18:39:05,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:39:05" (3/3) ... [2018-10-23 18:39:05,606 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label17_false-unreach-call.c [2018-10-23 18:39:05,616 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:39:05,632 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:39:05,648 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:39:05,697 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:39:05,697 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:39:05,698 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:39:05,698 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:39:05,698 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:39:05,698 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:39:05,698 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:39:05,698 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:39:05,698 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:39:05,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 18:39:05,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-23 18:39:05,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:39:05,762 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:39:05,764 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:39:05,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:39:05,771 INFO L82 PathProgramCache]: Analyzing trace with hash -159296518, now seen corresponding path program 1 times [2018-10-23 18:39:05,773 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:39:05,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:39:05,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:05,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:39:05,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:39:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:39:06,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:39:06,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:39:06,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:39:06,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:39:06,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:39:06,170 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 18:39:30,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:39:30,488 INFO L93 Difference]: Finished difference Result 6323 states and 12077 transitions. [2018-10-23 18:39:30,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:39:30,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-10-23 18:39:30,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:39:30,551 INFO L225 Difference]: With dead ends: 6323 [2018-10-23 18:39:30,551 INFO L226 Difference]: Without dead ends: 4567 [2018-10-23 18:39:30,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:39:30,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4567 states. [2018-10-23 18:39:30,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4567 to 4565. [2018-10-23 18:39:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4565 states. [2018-10-23 18:39:30,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 7747 transitions. [2018-10-23 18:39:30,767 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 7747 transitions. Word has length 11 [2018-10-23 18:39:30,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:39:30,768 INFO L481 AbstractCegarLoop]: Abstraction has 4565 states and 7747 transitions. [2018-10-23 18:39:30,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:39:30,768 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 7747 transitions. [2018-10-23 18:39:30,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-23 18:39:30,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:39:30,774 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:39:30,774 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:39:30,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:39:30,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1872032019, now seen corresponding path program 1 times [2018-10-23 18:39:30,775 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:39:30,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:39:30,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:30,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:39:30,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:39:31,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:39:31,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:39:31,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:39:31,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:39:31,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:39:31,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:39:31,176 INFO L87 Difference]: Start difference. First operand 4565 states and 7747 transitions. Second operand 5 states. [2018-10-23 18:39:52,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:39:52,147 INFO L93 Difference]: Finished difference Result 10504 states and 17448 transitions. [2018-10-23 18:39:52,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:39:52,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2018-10-23 18:39:52,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:39:52,179 INFO L225 Difference]: With dead ends: 10504 [2018-10-23 18:39:52,179 INFO L226 Difference]: Without dead ends: 5941 [2018-10-23 18:39:52,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:39:52,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5941 states. [2018-10-23 18:39:52,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5941 to 5937. [2018-10-23 18:39:52,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5937 states. [2018-10-23 18:39:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5937 states to 5937 states and 8927 transitions. [2018-10-23 18:39:52,290 INFO L78 Accepts]: Start accepts. Automaton has 5937 states and 8927 transitions. Word has length 86 [2018-10-23 18:39:52,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:39:52,291 INFO L481 AbstractCegarLoop]: Abstraction has 5937 states and 8927 transitions. [2018-10-23 18:39:52,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:39:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5937 states and 8927 transitions. [2018-10-23 18:39:52,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-23 18:39:52,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:39:52,296 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:39:52,296 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:39:52,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:39:52,299 INFO L82 PathProgramCache]: Analyzing trace with hash 335857981, now seen corresponding path program 1 times [2018-10-23 18:39:52,300 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:39:52,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:39:52,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:52,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:39:52,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:39:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:39:52,657 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:39:52,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:39:52,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:39:52,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:39:52,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:39:52,658 INFO L87 Difference]: Start difference. First operand 5937 states and 8927 transitions. Second operand 4 states. [2018-10-23 18:40:17,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:40:17,261 INFO L93 Difference]: Finished difference Result 23018 states and 34752 transitions. [2018-10-23 18:40:17,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:40:17,262 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2018-10-23 18:40:17,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:40:17,338 INFO L225 Difference]: With dead ends: 23018 [2018-10-23 18:40:17,338 INFO L226 Difference]: Without dead ends: 17083 [2018-10-23 18:40:17,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:40:17,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17083 states. [2018-10-23 18:40:17,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17083 to 11395. [2018-10-23 18:40:17,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11395 states. [2018-10-23 18:40:17,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11395 states to 11395 states and 16647 transitions. [2018-10-23 18:40:17,618 INFO L78 Accepts]: Start accepts. Automaton has 11395 states and 16647 transitions. Word has length 89 [2018-10-23 18:40:17,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:40:17,623 INFO L481 AbstractCegarLoop]: Abstraction has 11395 states and 16647 transitions. [2018-10-23 18:40:17,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:40:17,624 INFO L276 IsEmpty]: Start isEmpty. Operand 11395 states and 16647 transitions. [2018-10-23 18:40:17,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-23 18:40:17,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:40:17,628 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:40:17,629 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:40:17,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:40:17,629 INFO L82 PathProgramCache]: Analyzing trace with hash -204938979, now seen corresponding path program 1 times [2018-10-23 18:40:17,630 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:40:17,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:40:17,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:17,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:40:17,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:40:17,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:40:17,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:40:17,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:40:17,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:40:17,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:40:17,948 INFO L87 Difference]: Start difference. First operand 11395 states and 16647 transitions. Second operand 4 states. [2018-10-23 18:40:40,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:40:40,436 INFO L93 Difference]: Finished difference Result 44916 states and 65753 transitions. [2018-10-23 18:40:40,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:40:40,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2018-10-23 18:40:40,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:40:40,512 INFO L225 Difference]: With dead ends: 44916 [2018-10-23 18:40:40,513 INFO L226 Difference]: Without dead ends: 33523 [2018-10-23 18:40:40,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:40:40,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33523 states. [2018-10-23 18:40:40,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33523 to 33512. [2018-10-23 18:40:40,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33512 states. [2018-10-23 18:40:41,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33512 states to 33512 states and 42816 transitions. [2018-10-23 18:40:41,029 INFO L78 Accepts]: Start accepts. Automaton has 33512 states and 42816 transitions. Word has length 109 [2018-10-23 18:40:41,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:40:41,030 INFO L481 AbstractCegarLoop]: Abstraction has 33512 states and 42816 transitions. [2018-10-23 18:40:41,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:40:41,030 INFO L276 IsEmpty]: Start isEmpty. Operand 33512 states and 42816 transitions. [2018-10-23 18:40:41,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-23 18:40:41,031 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:40:41,032 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:40:41,032 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:40:41,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:40:41,032 INFO L82 PathProgramCache]: Analyzing trace with hash 409216838, now seen corresponding path program 1 times [2018-10-23 18:40:41,032 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:40:41,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:40:41,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:41,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:40:41,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:41,314 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 18:40:41,644 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-23 18:40:41,783 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-23 18:40:41,981 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:40:41,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:40:41,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 18:40:41,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:40:41,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:40:41,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:40:41,983 INFO L87 Difference]: Start difference. First operand 33512 states and 42816 transitions. Second operand 6 states. [2018-10-23 18:41:11,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:41:11,912 INFO L93 Difference]: Finished difference Result 105359 states and 132966 transitions. [2018-10-23 18:41:11,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 18:41:11,913 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-10-23 18:41:11,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:41:12,002 INFO L225 Difference]: With dead ends: 105359 [2018-10-23 18:41:12,002 INFO L226 Difference]: Without dead ends: 71849 [2018-10-23 18:41:12,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:41:12,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71849 states. [2018-10-23 18:41:12,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71849 to 70407. [2018-10-23 18:41:12,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70407 states. [2018-10-23 18:41:12,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70407 states to 70407 states and 87504 transitions. [2018-10-23 18:41:12,851 INFO L78 Accepts]: Start accepts. Automaton has 70407 states and 87504 transitions. Word has length 116 [2018-10-23 18:41:12,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:41:12,852 INFO L481 AbstractCegarLoop]: Abstraction has 70407 states and 87504 transitions. [2018-10-23 18:41:12,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:41:12,852 INFO L276 IsEmpty]: Start isEmpty. Operand 70407 states and 87504 transitions. [2018-10-23 18:41:12,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-23 18:41:12,854 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:41:12,855 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:41:12,855 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:41:12,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:41:12,855 INFO L82 PathProgramCache]: Analyzing trace with hash 108218592, now seen corresponding path program 1 times [2018-10-23 18:41:12,855 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:41:12,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:41:12,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:12,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:12,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-23 18:41:13,265 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:41:13,265 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:41:13,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:13,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:41:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:41:13,517 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:41:13,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-23 18:41:13,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:41:13,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:41:13,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:41:13,519 INFO L87 Difference]: Start difference. First operand 70407 states and 87504 transitions. Second operand 5 states. [2018-10-23 18:41:45,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:41:45,120 INFO L93 Difference]: Finished difference Result 292617 states and 365616 transitions. [2018-10-23 18:41:45,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:41:45,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2018-10-23 18:41:45,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:41:45,509 INFO L225 Difference]: With dead ends: 292617 [2018-10-23 18:41:45,510 INFO L226 Difference]: Without dead ends: 222212 [2018-10-23 18:41:45,583 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:41:45,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222212 states. [2018-10-23 18:41:49,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222212 to 213910. [2018-10-23 18:41:49,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213910 states. [2018-10-23 18:41:49,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213910 states to 213910 states and 249337 transitions. [2018-10-23 18:41:49,420 INFO L78 Accepts]: Start accepts. Automaton has 213910 states and 249337 transitions. Word has length 247 [2018-10-23 18:41:49,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:41:49,421 INFO L481 AbstractCegarLoop]: Abstraction has 213910 states and 249337 transitions. [2018-10-23 18:41:49,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:41:49,421 INFO L276 IsEmpty]: Start isEmpty. Operand 213910 states and 249337 transitions. [2018-10-23 18:41:49,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2018-10-23 18:41:49,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:41:49,466 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:41:49,466 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:41:49,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:41:49,467 INFO L82 PathProgramCache]: Analyzing trace with hash -836443827, now seen corresponding path program 1 times [2018-10-23 18:41:49,467 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:41:49,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:41:49,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:49,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:49,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:50,670 WARN L179 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-23 18:41:51,344 WARN L179 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-10-23 18:41:53,515 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 352 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-23 18:41:53,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:41:53,516 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:41:53,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:53,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:41:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-23 18:41:54,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:41:54,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 18:41:54,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:41:54,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:41:54,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:41:54,233 INFO L87 Difference]: Start difference. First operand 213910 states and 249337 transitions. Second operand 5 states. [2018-10-23 18:42:21,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:42:21,729 INFO L93 Difference]: Finished difference Result 445579 states and 517282 transitions. [2018-10-23 18:42:21,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 18:42:21,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 940 [2018-10-23 18:42:21,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:42:22,013 INFO L225 Difference]: With dead ends: 445579 [2018-10-23 18:42:22,013 INFO L226 Difference]: Without dead ends: 226203 [2018-10-23 18:42:22,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 949 GetRequests, 940 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:42:22,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226203 states. [2018-10-23 18:42:24,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226203 to 216622. [2018-10-23 18:42:24,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216622 states. [2018-10-23 18:42:25,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216622 states to 216622 states and 239044 transitions. [2018-10-23 18:42:25,979 INFO L78 Accepts]: Start accepts. Automaton has 216622 states and 239044 transitions. Word has length 940 [2018-10-23 18:42:25,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:42:25,980 INFO L481 AbstractCegarLoop]: Abstraction has 216622 states and 239044 transitions. [2018-10-23 18:42:25,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:42:25,980 INFO L276 IsEmpty]: Start isEmpty. Operand 216622 states and 239044 transitions. [2018-10-23 18:42:26,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2018-10-23 18:42:26,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:42:26,025 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:42:26,025 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:42:26,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:42:26,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1582650216, now seen corresponding path program 1 times [2018-10-23 18:42:26,026 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:42:26,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:42:26,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:26,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:42:26,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:42:27,040 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked. [2018-10-23 18:42:27,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:42:27,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:42:27,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:42:27,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:42:27,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:42:27,042 INFO L87 Difference]: Start difference. First operand 216622 states and 239044 transitions. Second operand 3 states. Received shutdown request... [2018-10-23 18:42:33,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:42:33,812 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:42:33,818 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:42:33,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:42:33 BoogieIcfgContainer [2018-10-23 18:42:33,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:42:33,820 INFO L168 Benchmark]: Toolchain (without parser) took 231797.44 ms. Allocated memory was 1.6 GB in the beginning and 3.3 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 152.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-23 18:42:33,821 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:42:33,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3318.57 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:42:33,822 INFO L168 Benchmark]: Boogie Procedure Inliner took 1123.13 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 861.9 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:42:33,823 INFO L168 Benchmark]: Boogie Preprocessor took 781.63 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 89.4 MB). Peak memory consumption was 89.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:42:33,824 INFO L168 Benchmark]: RCFGBuilder took 18342.34 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 307.2 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -353.6 MB). Peak memory consumption was 822.9 MB. Max. memory is 7.1 GB. [2018-10-23 18:42:33,825 INFO L168 Benchmark]: TraceAbstraction took 208223.66 ms. Allocated memory was 2.7 GB in the beginning and 3.3 GB in the end (delta: 578.8 MB). Free memory was 2.4 GB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-23 18:42:33,831 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3318.57 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1123.13 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 861.9 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 781.63 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 89.4 MB). Peak memory consumption was 89.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18342.34 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 307.2 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -353.6 MB). Peak memory consumption was 822.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208223.66 ms. Allocated memory was 2.7 GB in the beginning and 3.3 GB in the end (delta: 578.8 MB). Free memory was 2.4 GB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 46). Cancelled while BasicCegarLoop was constructing difference of abstraction (216622states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (96243 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 208.1s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 189.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7578 SDtfs, 33655 SDslu, 3322 SDs, 0 SdLazy, 78259 SolverSat, 16917 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 160.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1226 GetRequests, 1194 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216622occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 25030 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 3784 NumberOfCodeBlocks, 3784 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 3774 ConstructedInterpolants, 0 QuantifiedInterpolants, 7632720 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1374 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 1601/1610 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown