java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/ddlm2013.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 03:01:43,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 03:01:43,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 03:01:43,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 03:01:43,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 03:01:43,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 03:01:43,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 03:01:43,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 03:01:43,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 03:01:43,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 03:01:43,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 03:01:43,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 03:01:43,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 03:01:43,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 03:01:43,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 03:01:43,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 03:01:43,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 03:01:43,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 03:01:43,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 03:01:43,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 03:01:43,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 03:01:43,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 03:01:43,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 03:01:43,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 03:01:43,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 03:01:43,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 03:01:43,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 03:01:43,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 03:01:43,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 03:01:43,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 03:01:43,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 03:01:43,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 03:01:43,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 03:01:43,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 03:01:43,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 03:01:43,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 03:01:43,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 03:01:43,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 03:01:43,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 03:01:43,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 03:01:43,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 03:01:43,928 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 03:01:43,941 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 03:01:43,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 03:01:43,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 03:01:43,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 03:01:43,943 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 03:01:43,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 03:01:43,943 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 03:01:43,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 03:01:43,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 03:01:43,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 03:01:43,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 03:01:43,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 03:01:43,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 03:01:43,945 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 03:01:43,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 03:01:43,945 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 03:01:43,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 03:01:43,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 03:01:43,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 03:01:43,946 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 03:01:43,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 03:01:43,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 03:01:43,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 03:01:43,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 03:01:43,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 03:01:43,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 03:01:43,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 03:01:43,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 03:01:43,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 03:01:43,978 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 03:01:43,993 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 03:01:43,996 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 03:01:43,997 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 03:01:43,997 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 03:01:43,998 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013.i [2019-09-08 03:01:44,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0e2a6fb6/0db04f23f10346faa1edac714cc71230/FLAGa6bce08b6 [2019-09-08 03:01:44,474 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 03:01:44,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/ddlm2013.i [2019-09-08 03:01:44,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0e2a6fb6/0db04f23f10346faa1edac714cc71230/FLAGa6bce08b6 [2019-09-08 03:01:44,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0e2a6fb6/0db04f23f10346faa1edac714cc71230 [2019-09-08 03:01:44,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 03:01:44,889 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 03:01:44,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 03:01:44,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 03:01:44,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 03:01:44,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 03:01:44" (1/1) ... [2019-09-08 03:01:44,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e08cfec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:44, skipping insertion in model container [2019-09-08 03:01:44,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 03:01:44" (1/1) ... [2019-09-08 03:01:44,903 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 03:01:44,917 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 03:01:45,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 03:01:45,084 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 03:01:45,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 03:01:45,117 INFO L192 MainTranslator]: Completed translation [2019-09-08 03:01:45,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:45 WrapperNode [2019-09-08 03:01:45,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 03:01:45,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 03:01:45,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 03:01:45,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 03:01:45,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:45" (1/1) ... [2019-09-08 03:01:45,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:45" (1/1) ... [2019-09-08 03:01:45,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:45" (1/1) ... [2019-09-08 03:01:45,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:45" (1/1) ... [2019-09-08 03:01:45,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:45" (1/1) ... [2019-09-08 03:01:45,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:45" (1/1) ... [2019-09-08 03:01:45,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:45" (1/1) ... [2019-09-08 03:01:45,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 03:01:45,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 03:01:45,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 03:01:45,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 03:01:45,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:45" (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 [2019-09-08 03:01:45,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 03:01:45,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 03:01:45,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-08 03:01:45,286 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 03:01:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 03:01:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 03:01:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-08 03:01:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 03:01:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 03:01:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 03:01:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 03:01:45,463 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 03:01:45,463 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 03:01:45,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 03:01:45 BoogieIcfgContainer [2019-09-08 03:01:45,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 03:01:45,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 03:01:45,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 03:01:45,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 03:01:45,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 03:01:44" (1/3) ... [2019-09-08 03:01:45,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405fc309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 03:01:45, skipping insertion in model container [2019-09-08 03:01:45,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:45" (2/3) ... [2019-09-08 03:01:45,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405fc309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 03:01:45, skipping insertion in model container [2019-09-08 03:01:45,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 03:01:45" (3/3) ... [2019-09-08 03:01:45,479 INFO L109 eAbstractionObserver]: Analyzing ICFG ddlm2013.i [2019-09-08 03:01:45,492 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 03:01:45,500 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 03:01:45,516 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 03:01:45,541 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 03:01:45,541 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 03:01:45,541 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 03:01:45,542 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 03:01:45,542 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 03:01:45,542 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 03:01:45,542 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 03:01:45,542 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 03:01:45,542 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 03:01:45,557 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-08 03:01:45,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-08 03:01:45,562 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:01:45,563 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:01:45,565 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:01:45,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:01:45,569 INFO L82 PathProgramCache]: Analyzing trace with hash -382823925, now seen corresponding path program 1 times [2019-09-08 03:01:45,571 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:01:45,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:01:45,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:45,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:01:45,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:01:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 03:01:45,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 03:01:45,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 03:01:45,673 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 03:01:45,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 03:01:45,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 03:01:45,685 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-09-08 03:01:45,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:01:45,703 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2019-09-08 03:01:45,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 03:01:45,704 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-09-08 03:01:45,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:01:45,713 INFO L225 Difference]: With dead ends: 35 [2019-09-08 03:01:45,713 INFO L226 Difference]: Without dead ends: 15 [2019-09-08 03:01:45,716 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 03:01:45,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-08 03:01:45,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-08 03:01:45,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-08 03:01:45,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-09-08 03:01:45,754 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2019-09-08 03:01:45,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:01:45,754 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-09-08 03:01:45,755 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 03:01:45,755 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-09-08 03:01:45,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-08 03:01:45,755 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:01:45,756 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:01:45,756 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:01:45,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:01:45,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1944032635, now seen corresponding path program 1 times [2019-09-08 03:01:45,757 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:01:45,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:01:45,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:45,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:01:45,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:01:46,111 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 5 [2019-09-08 03:01:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 03:01:46,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 03:01:46,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 03:01:46,129 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 03:01:46,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 03:01:46,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 03:01:46,130 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 5 states. [2019-09-08 03:01:46,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:01:46,181 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-09-08 03:01:46,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 03:01:46,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-08 03:01:46,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:01:46,182 INFO L225 Difference]: With dead ends: 23 [2019-09-08 03:01:46,183 INFO L226 Difference]: Without dead ends: 17 [2019-09-08 03:01:46,184 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 03:01:46,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-09-08 03:01:46,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-09-08 03:01:46,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-09-08 03:01:46,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-09-08 03:01:46,190 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2019-09-08 03:01:46,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:01:46,190 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-09-08 03:01:46,191 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 03:01:46,191 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-09-08 03:01:46,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-08 03:01:46,192 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:01:46,192 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:01:46,192 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:01:46,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:01:46,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1646139566, now seen corresponding path program 1 times [2019-09-08 03:01:46,193 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:01:46,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:01:46,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:46,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:01:46,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:01:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 03:01:46,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 03:01:46,404 INFO L223 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 [2019-09-08 03:01:46,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:01:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:01:46,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-08 03:01:46,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:01:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 03:01:46,567 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 03:01:46,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-09-08 03:01:46,568 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 03:01:46,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 03:01:46,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-09-08 03:01:46,570 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 12 states. [2019-09-08 03:01:46,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:01:46,681 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-09-08 03:01:46,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 03:01:46,683 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2019-09-08 03:01:46,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:01:46,684 INFO L225 Difference]: With dead ends: 28 [2019-09-08 03:01:46,684 INFO L226 Difference]: Without dead ends: 22 [2019-09-08 03:01:46,686 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-09-08 03:01:46,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-08 03:01:46,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-09-08 03:01:46,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-08 03:01:46,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-09-08 03:01:46,692 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 16 [2019-09-08 03:01:46,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:01:46,693 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-09-08 03:01:46,693 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 03:01:46,694 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-09-08 03:01:46,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-08 03:01:46,695 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:01:46,695 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:01:46,696 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:01:46,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:01:46,696 INFO L82 PathProgramCache]: Analyzing trace with hash -945074988, now seen corresponding path program 1 times [2019-09-08 03:01:46,696 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:01:46,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:01:46,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:46,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:01:46,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:01:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 03:01:46,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 03:01:46,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 03:01:46,763 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 03:01:46,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 03:01:46,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 03:01:46,764 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2019-09-08 03:01:46,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:01:46,776 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-09-08 03:01:46,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 03:01:46,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-09-08 03:01:46,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:01:46,778 INFO L225 Difference]: With dead ends: 31 [2019-09-08 03:01:46,779 INFO L226 Difference]: Without dead ends: 20 [2019-09-08 03:01:46,780 INFO L628 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 [2019-09-08 03:01:46,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-09-08 03:01:46,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-09-08 03:01:46,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-08 03:01:46,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-09-08 03:01:46,786 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2019-09-08 03:01:46,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:01:46,787 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-09-08 03:01:46,787 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 03:01:46,787 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-09-08 03:01:46,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-08 03:01:46,788 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:01:46,789 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:01:46,789 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:01:46,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:01:46,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1104392731, now seen corresponding path program 2 times [2019-09-08 03:01:46,789 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:01:46,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:01:46,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:46,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:01:46,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:01:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 03:01:47,073 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 03:01:47,074 INFO L223 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 [2019-09-08 03:01:47,098 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 03:01:47,117 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 03:01:47,117 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 03:01:47,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 26 conjunts are in the unsatisfiable core [2019-09-08 03:01:47,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:01:47,289 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 03:01:47,292 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 03:01:47,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-09-08 03:01:47,293 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-08 03:01:47,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-08 03:01:47,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2019-09-08 03:01:47,294 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 16 states. [2019-09-08 03:01:47,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:01:47,492 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2019-09-08 03:01:47,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-08 03:01:47,492 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2019-09-08 03:01:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:01:47,493 INFO L225 Difference]: With dead ends: 52 [2019-09-08 03:01:47,493 INFO L226 Difference]: Without dead ends: 31 [2019-09-08 03:01:47,495 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2019-09-08 03:01:47,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-09-08 03:01:47,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2019-09-08 03:01:47,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-09-08 03:01:47,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-09-08 03:01:47,504 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 19 [2019-09-08 03:01:47,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:01:47,505 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-09-08 03:01:47,505 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-08 03:01:47,505 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-09-08 03:01:47,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-08 03:01:47,506 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:01:47,506 INFO L399 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:01:47,506 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:01:47,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:01:47,507 INFO L82 PathProgramCache]: Analyzing trace with hash -767923148, now seen corresponding path program 1 times [2019-09-08 03:01:47,507 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:01:47,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:01:47,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:47,511 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 03:01:47,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:01:51,705 WARN L188 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 43 DAG size of output: 15 [2019-09-08 03:01:51,755 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 03:01:51,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 03:01:51,756 INFO L223 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) [2019-09-08 03:01:51,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 03:01:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:01:51,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-08 03:01:51,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:01:51,821 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 03:01:51,825 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 03:01:51,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 9 [2019-09-08 03:01:51,825 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 03:01:51,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 03:01:51,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-09-08 03:01:51,826 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 9 states. [2019-09-08 03:01:51,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:01:51,892 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2019-09-08 03:01:51,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 03:01:51,892 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2019-09-08 03:01:51,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:01:51,893 INFO L225 Difference]: With dead ends: 40 [2019-09-08 03:01:51,894 INFO L226 Difference]: Without dead ends: 29 [2019-09-08 03:01:51,894 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-09-08 03:01:51,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-08 03:01:51,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-09-08 03:01:51,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-09-08 03:01:51,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2019-09-08 03:01:51,899 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 22 [2019-09-08 03:01:51,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:01:51,899 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2019-09-08 03:01:51,900 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 03:01:51,900 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2019-09-08 03:01:51,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-09-08 03:01:51,901 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:01:51,901 INFO L399 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:01:51,901 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:01:51,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:01:51,902 INFO L82 PathProgramCache]: Analyzing trace with hash 54730258, now seen corresponding path program 3 times [2019-09-08 03:01:51,902 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:01:51,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:01:51,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:51,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:01:51,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:01:52,332 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 03:01:52,333 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 03:01:52,333 INFO L223 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 [2019-09-08 03:01:52,353 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 03:01:52,391 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-09-08 03:01:52,392 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 03:01:52,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 50 conjunts are in the unsatisfiable core [2019-09-08 03:01:52,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:01:52,793 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 03:01:52,796 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 03:01:52,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2019-09-08 03:01:52,797 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-08 03:01:52,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-08 03:01:52,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2019-09-08 03:01:52,798 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2019-09-08 03:01:53,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:01:53,186 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2019-09-08 03:01:53,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-08 03:01:53,187 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2019-09-08 03:01:53,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:01:53,188 INFO L225 Difference]: With dead ends: 34 [2019-09-08 03:01:53,188 INFO L226 Difference]: Without dead ends: 0 [2019-09-08 03:01:53,190 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2019-09-08 03:01:53,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-08 03:01:53,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-08 03:01:53,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-08 03:01:53,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-08 03:01:53,191 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2019-09-08 03:01:53,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:01:53,191 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-08 03:01:53,191 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-08 03:01:53,192 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-08 03:01:53,192 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-08 03:01:53,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-08 03:01:53,260 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-08 03:01:53,260 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-08 03:01:53,260 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-08 03:01:53,260 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-08 03:01:53,261 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-08 03:01:53,261 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-08 03:01:53,261 INFO L443 ceAbstractionStarter]: For program point L31(lines 31 33) no Hoare annotation was computed. [2019-09-08 03:01:53,261 INFO L443 ceAbstractionStarter]: For program point L25(lines 25 29) no Hoare annotation was computed. [2019-09-08 03:01:53,261 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 35) no Hoare annotation was computed. [2019-09-08 03:01:53,261 INFO L443 ceAbstractionStarter]: For program point L25-2(lines 10 35) no Hoare annotation was computed. [2019-09-08 03:01:53,261 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 30) no Hoare annotation was computed. [2019-09-08 03:01:53,262 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 10 35) no Hoare annotation was computed. [2019-09-08 03:01:53,262 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 35) no Hoare annotation was computed. [2019-09-08 03:01:53,262 INFO L439 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: (= (+ (* 4294967296 (div main_~a~0 4294967296)) main_~b~0) (+ (* 4294967296 (div main_~b~0 4294967296)) main_~a~0)) [2019-09-08 03:01:53,262 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 35) the Hoare annotation is: true [2019-09-08 03:01:53,262 INFO L443 ceAbstractionStarter]: For program point L16(lines 16 20) no Hoare annotation was computed. [2019-09-08 03:01:53,262 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-08 03:01:53,262 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-08 03:01:53,263 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-08 03:01:53,263 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-08 03:01:53,263 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-08 03:01:53,263 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-08 03:01:53,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 03:01:53 BoogieIcfgContainer [2019-09-08 03:01:53,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 03:01:53,268 INFO L168 Benchmark]: Toolchain (without parser) took 8378.77 ms. Allocated memory was 134.7 MB in the beginning and 255.9 MB in the end (delta: 121.1 MB). Free memory was 90.8 MB in the beginning and 223.1 MB in the end (delta: -132.4 MB). Peak memory consumption was 122.6 MB. Max. memory is 7.1 GB. [2019-09-08 03:01:53,269 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 134.7 MB. Free memory was 109.3 MB in the beginning and 109.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 03:01:53,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.87 ms. Allocated memory is still 134.7 MB. Free memory was 90.3 MB in the beginning and 81.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-08 03:01:53,271 INFO L168 Benchmark]: Boogie Preprocessor took 107.43 ms. Allocated memory was 134.7 MB in the beginning and 200.8 MB in the end (delta: 66.1 MB). Free memory was 81.1 MB in the beginning and 177.9 MB in the end (delta: -96.8 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-09-08 03:01:53,271 INFO L168 Benchmark]: RCFGBuilder took 238.76 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 165.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2019-09-08 03:01:53,272 INFO L168 Benchmark]: TraceAbstraction took 7800.42 ms. Allocated memory was 200.8 MB in the beginning and 255.9 MB in the end (delta: 55.1 MB). Free memory was 165.0 MB in the beginning and 223.1 MB in the end (delta: -58.2 MB). Peak memory consumption was 130.7 MB. Max. memory is 7.1 GB. [2019-09-08 03:01:53,276 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 134.7 MB. Free memory was 109.3 MB in the beginning and 109.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 227.87 ms. Allocated memory is still 134.7 MB. Free memory was 90.3 MB in the beginning and 81.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.43 ms. Allocated memory was 134.7 MB in the beginning and 200.8 MB in the end (delta: 66.1 MB). Free memory was 81.1 MB in the beginning and 177.9 MB in the end (delta: -96.8 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 238.76 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 165.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7800.42 ms. Allocated memory was 200.8 MB in the beginning and 255.9 MB in the end (delta: 55.1 MB). Free memory was 165.0 MB in the beginning and 223.1 MB in the end (delta: -58.2 MB). Peak memory consumption was 130.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 7.7s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 119 SDtfs, 48 SDslu, 612 SDs, 0 SdLazy, 438 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=5, 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: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 17 PreInvPairs, 25 NumberOfFragments, 20 HoareAnnotationTreeSize, 17 FomulaSimplifications, 55 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 130 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 211 NumberOfCodeBlocks, 211 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 32878 SizeOfPredicates, 10 NumberOfNonLiveVariables, 290 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 18/130 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...