java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/GeometricalIntegerCakeWithArray.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f57a05f [2019-01-08 14:31:37,538 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-08 14:31:37,542 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-08 14:31:37,557 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-08 14:31:37,557 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-08 14:31:37,558 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-08 14:31:37,560 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-08 14:31:37,562 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-08 14:31:37,563 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-08 14:31:37,564 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-08 14:31:37,565 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-08 14:31:37,565 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-08 14:31:37,566 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-08 14:31:37,567 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-08 14:31:37,568 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-08 14:31:37,569 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-08 14:31:37,570 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-08 14:31:37,572 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-08 14:31:37,574 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-08 14:31:37,576 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-08 14:31:37,577 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-08 14:31:37,579 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-08 14:31:37,583 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-08 14:31:37,583 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-08 14:31:37,584 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-08 14:31:37,585 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-08 14:31:37,588 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-08 14:31:37,589 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-08 14:31:37,590 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-08 14:31:37,593 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-08 14:31:37,593 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-08 14:31:37,595 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-08 14:31:37,595 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-08 14:31:37,595 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-08 14:31:37,596 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-08 14:31:37,596 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-08 14:31:37,599 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2019-01-08 14:31:37,622 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-08 14:31:37,622 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-08 14:31:37,624 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-08 14:31:37,625 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-08 14:31:37,625 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-08 14:31:37,625 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-08 14:31:37,625 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-08 14:31:37,625 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-08 14:31:37,626 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-08 14:31:37,626 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-01-08 14:31:37,626 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-01-08 14:31:37,627 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-08 14:31:37,627 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-08 14:31:37,627 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-08 14:31:37,628 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-08 14:31:37,628 INFO L133 SettingsManager]: * Use SBE=true [2019-01-08 14:31:37,628 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-08 14:31:37,628 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-08 14:31:37,629 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-08 14:31:37,630 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-08 14:31:37,630 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-08 14:31:37,630 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-08 14:31:37,630 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-08 14:31:37,630 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-08 14:31:37,631 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-08 14:31:37,631 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-08 14:31:37,631 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-08 14:31:37,631 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-08 14:31:37,631 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-08 14:31:37,632 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-08 14:31:37,632 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in -t:2000 [2019-01-08 14:31:37,632 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-08 14:31:37,632 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-08 14:31:37,632 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-08 14:31:37,633 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-08 14:31:37,633 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-08 14:31:37,633 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in [2019-01-08 14:31:37,633 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-08 14:31:37,633 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-08 14:31:37,672 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-08 14:31:37,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-08 14:31:37,687 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-08 14:31:37,688 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-08 14:31:37,689 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-08 14:31:37,689 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/GeometricalIntegerCakeWithArray.bpl [2019-01-08 14:31:37,690 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/GeometricalIntegerCakeWithArray.bpl' [2019-01-08 14:31:37,720 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-08 14:31:37,722 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-08 14:31:37,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-08 14:31:37,723 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-08 14:31:37,723 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-08 14:31:37,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "GeometricalIntegerCakeWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:31:37" (1/1) ... [2019-01-08 14:31:37,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "GeometricalIntegerCakeWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:31:37" (1/1) ... [2019-01-08 14:31:37,758 WARN L165 Inliner]: Program contained no entry procedure! [2019-01-08 14:31:37,759 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-01-08 14:31:37,759 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-01-08 14:31:37,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-08 14:31:37,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-08 14:31:37,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-08 14:31:37,763 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-08 14:31:37,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GeometricalIntegerCakeWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:31:37" (1/1) ... [2019-01-08 14:31:37,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GeometricalIntegerCakeWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:31:37" (1/1) ... [2019-01-08 14:31:37,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GeometricalIntegerCakeWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:31:37" (1/1) ... [2019-01-08 14:31:37,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GeometricalIntegerCakeWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:31:37" (1/1) ... [2019-01-08 14:31:37,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GeometricalIntegerCakeWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:31:37" (1/1) ... [2019-01-08 14:31:37,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GeometricalIntegerCakeWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:31:37" (1/1) ... [2019-01-08 14:31:37,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GeometricalIntegerCakeWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:31:37" (1/1) ... [2019-01-08 14:31:37,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-08 14:31:37,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-08 14:31:37,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-08 14:31:37,789 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-08 14:31:37,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GeometricalIntegerCakeWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:31:37" (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:8192 -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:8192 -smt2 -in -t:2000 [2019-01-08 14:31:37,862 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-01-08 14:31:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-08 14:31:37,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-08 14:31:38,155 INFO L278 CfgBuilder]: Using library mode [2019-01-08 14:31:38,156 INFO L286 CfgBuilder]: Removed 1 assue(true) statements. [2019-01-08 14:31:38,157 INFO L202 PluginConnector]: Adding new model GeometricalIntegerCakeWithArray.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 02:31:38 BoogieIcfgContainer [2019-01-08 14:31:38,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-08 14:31:38,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-08 14:31:38,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-08 14:31:38,164 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-08 14:31:38,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GeometricalIntegerCakeWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:31:37" (1/2) ... [2019-01-08 14:31:38,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae47d64 and model type GeometricalIntegerCakeWithArray.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 02:31:38, skipping insertion in model container [2019-01-08 14:31:38,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GeometricalIntegerCakeWithArray.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 02:31:38" (2/2) ... [2019-01-08 14:31:38,168 INFO L112 eAbstractionObserver]: Analyzing ICFG GeometricalIntegerCakeWithArray.bpl [2019-01-08 14:31:38,179 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-08 14:31:38,187 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-01-08 14:31:38,207 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-01-08 14:31:38,242 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-08 14:31:38,243 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-08 14:31:38,243 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-08 14:31:38,243 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-08 14:31:38,243 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-08 14:31:38,244 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-08 14:31:38,244 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-08 14:31:38,244 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-08 14:31:38,261 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-01-08 14:31:38,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-08 14:31:38,268 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 14:31:38,269 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-08 14:31:38,271 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2019-01-08 14:31:38,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 14:31:38,278 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-01-08 14:31:38,281 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 14:31:38,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:31:38,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 14:31:38,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:31:38,341 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 14:31:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 14:31:38,975 WARN L181 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 18 [2019-01-08 14:31:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:31:38,980 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-08 14:31:38,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-08 14:31:38,980 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-08 14:31:38,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-08 14:31:39,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-08 14:31:39,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-08 14:31:39,003 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2019-01-08 14:31:39,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 14:31:39,091 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-01-08 14:31:39,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-08 14:31:39,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-08 14:31:39,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 14:31:39,107 INFO L225 Difference]: With dead ends: 15 [2019-01-08 14:31:39,108 INFO L226 Difference]: Without dead ends: 8 [2019-01-08 14:31:39,111 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-08 14:31:39,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-01-08 14:31:39,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-01-08 14:31:39,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-01-08 14:31:39,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-01-08 14:31:39,145 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 2 [2019-01-08 14:31:39,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 14:31:39,145 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-01-08 14:31:39,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-08 14:31:39,146 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-01-08 14:31:39,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-08 14:31:39,146 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 14:31:39,146 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-08 14:31:39,147 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2019-01-08 14:31:39,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 14:31:39,147 INFO L82 PathProgramCache]: Analyzing trace with hash 926592, now seen corresponding path program 1 times [2019-01-08 14:31:39,148 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 14:31:39,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:31:39,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 14:31:39,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:31:39,149 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 14:31:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 14:31:39,608 WARN L181 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 15 [2019-01-08 14:31:40,003 WARN L181 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 17 [2019-01-08 14:31:40,176 WARN L181 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-01-08 14:31:40,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:31:40,181 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 14:31:40,183 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-08 14:31:40,186 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2019-01-08 14:31:40,193 INFO L207 CegarAbsIntRunner]: [0], [2], [3], [6] [2019-01-08 14:31:40,277 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-01-08 14:31:40,277 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-08 14:31:40,774 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-08 14:31:40,776 INFO L272 AbstractInterpreter]: Visited 4 different actions 6 times. Merged at 1 different actions 1 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 0 variables. [2019-01-08 14:31:40,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 14:31:40,783 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-08 14:31:40,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 14:31:40,784 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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 [2019-01-08 14:31:40,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 14:31:40,799 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-08 14:31:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 14:31:40,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-08 14:31:41,380 WARN L181 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2019-01-08 14:31:41,409 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2019-01-08 14:31:41,418 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2019-01-08 14:31:41,418 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 14:31:41,455 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:31:41,563 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2019-01-08 14:31:41,576 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2019-01-08 14:31:41,577 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-08 14:31:41,593 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-01-08 14:31:41,635 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-01-08 14:31:41,635 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:82, output treesize:38 [2019-01-08 14:31:41,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:31:41,796 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-08 14:31:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:31:41,902 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-01-08 14:31:41,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2019-01-08 14:31:41,902 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-08 14:31:41,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-08 14:31:41,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-08 14:31:41,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-01-08 14:31:41,904 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2019-01-08 14:31:41,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 14:31:41,976 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-01-08 14:31:41,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-08 14:31:41,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-01-08 14:31:41,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 14:31:41,977 INFO L225 Difference]: With dead ends: 8 [2019-01-08 14:31:41,977 INFO L226 Difference]: Without dead ends: 7 [2019-01-08 14:31:41,978 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-01-08 14:31:41,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-01-08 14:31:41,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-01-08 14:31:41,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-01-08 14:31:41,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-01-08 14:31:41,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-01-08 14:31:41,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 14:31:41,983 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-01-08 14:31:41,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-08 14:31:41,983 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-01-08 14:31:41,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-08 14:31:41,984 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 14:31:41,984 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-01-08 14:31:41,984 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2019-01-08 14:31:41,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 14:31:41,984 INFO L82 PathProgramCache]: Analyzing trace with hash 890456194, now seen corresponding path program 1 times [2019-01-08 14:31:41,985 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 14:31:41,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:31:41,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 14:31:41,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:31:41,986 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 14:31:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 14:31:42,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-01-08 14:31:42,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-08 14:31:42,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-08 14:31:42,042 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-08 14:31:42,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-08 14:31:42,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-08 14:31:42,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-08 14:31:42,044 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2019-01-08 14:31:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 14:31:42,063 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-01-08 14:31:42,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-08 14:31:42,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-01-08 14:31:42,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 14:31:42,064 INFO L225 Difference]: With dead ends: 7 [2019-01-08 14:31:42,064 INFO L226 Difference]: Without dead ends: 0 [2019-01-08 14:31:42,065 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-08 14:31:42,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-08 14:31:42,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-08 14:31:42,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-08 14:31:42,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-08 14:31:42,066 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2019-01-08 14:31:42,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 14:31:42,066 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-08 14:31:42,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-08 14:31:42,067 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-08 14:31:42,067 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-08 14:31:42,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-08 14:31:42,195 WARN L181 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2019-01-08 14:31:42,199 INFO L448 ceAbstractionStarter]: For program point mainENTRY(lines 8 28) no Hoare annotation was computed. [2019-01-08 14:31:42,199 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINVARIANTandASSERT(line 19) no Hoare annotation was computed. [2019-01-08 14:31:42,199 INFO L448 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2019-01-08 14:31:42,199 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 8 28) no Hoare annotation was computed. [2019-01-08 14:31:42,199 INFO L448 ceAbstractionStarter]: For program point L24-1(lines 8 28) no Hoare annotation was computed. [2019-01-08 14:31:42,199 INFO L448 ceAbstractionStarter]: For program point L18-1(lines 18 26) no Hoare annotation was computed. [2019-01-08 14:31:42,200 INFO L444 ceAbstractionStarter]: At program point L18-2(lines 18 23) the Hoare annotation is: (let ((.cse2 (select main_m main_eat)) (.cse0 (= main_eat main_cakeLeft))) (or (and (not .cse0) (exists ((v_arrayElimCell_2 Int)) (let ((.cse1 (div v_arrayElimCell_2 2))) (and (= .cse1 (select main_m main_eat)) (<= 0 v_arrayElimCell_2) (<= (+ (div main_init 2) v_arrayElimCell_2) (+ .cse1 (select main_m main_cakeLeft))))))) (and (= main_cakeLeft main_eat) (= 0 .cse2)) (and (= (div main_init 2) .cse2) (not (= main_init (select main_m main_cakeLeft))) .cse0))) [2019-01-08 14:31:42,200 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONASSERT(line 25) no Hoare annotation was computed. [2019-01-08 14:31:42,211 INFO L202 PluginConnector]: Adding new model GeometricalIntegerCakeWithArray.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.01 02:31:42 BoogieIcfgContainer [2019-01-08 14:31:42,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-08 14:31:42,211 INFO L168 Benchmark]: Toolchain (without parser) took 4490.71 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 687.9 MB). Free memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: -646.6 MB). Peak memory consumption was 41.3 MB. Max. memory is 7.1 GB. [2019-01-08 14:31:42,213 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-08 14:31:42,213 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.32 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-08 14:31:42,214 INFO L168 Benchmark]: Boogie Preprocessor took 26.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-08 14:31:42,214 INFO L168 Benchmark]: RCFGBuilder took 368.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2019-01-08 14:31:42,215 INFO L168 Benchmark]: TraceAbstraction took 4052.58 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 687.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -667.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2019-01-08 14:31:42,219 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 39.32 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 368.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4052.58 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 687.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -667.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 19]: loop invariant is valid and assertion always holds For all program executions holds that loop invariant is valid and assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((!(eat == cakeLeft) && (exists v_arrayElimCell_2 : int :: (v_arrayElimCell_2 / 2 == m[eat] && 0 <= v_arrayElimCell_2) && init / 2 + v_arrayElimCell_2 <= v_arrayElimCell_2 / 2 + m[cakeLeft])) || (cakeLeft == eat && 0 == m[eat])) || ((init / 2 == m[eat] && !(init == m[cakeLeft])) && eat == cakeLeft) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 2 error locations. SAFE Result, 3.9s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 6 SDtfs, 10 SDslu, 1 SDs, 0 SdLazy, 25 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.5s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 57 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 40 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 15 ConstructedInterpolants, 1 QuantifiedInterpolants, 869 SizeOfPredicates, 4 NumberOfNonLiveVariables, 8 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 4/5 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...