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_compound_exp_cong.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested9.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 16:41:14,718 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 16:41:14,720 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 16:41:14,741 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 16:41:14,741 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 16:41:14,743 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 16:41:14,745 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 16:41:14,748 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 16:41:14,750 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 16:41:14,751 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 16:41:14,758 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-12-03 16:41:14,808 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_exp_cong.epf [2018-12-03 16:41:14,829 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 16:41:14,829 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 16:41:14,830 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 16:41:14,830 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 16:41:14,830 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 16:41:14,830 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 16:41:14,831 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 16:41:14,831 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 16:41:14,831 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 16:41:14,831 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 16:41:14,831 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 16:41:14,832 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 16:41:14,832 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 16:41:14,833 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 16:41:14,833 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 16:41:14,834 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 16:41:14,834 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 16:41:14,834 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 16:41:14,834 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 16:41:14,834 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 16:41:14,837 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 16:41:14,837 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 16:41:14,837 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 16:41:14,837 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 16:41:14,838 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 16:41:14,838 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 16:41:14,838 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 16:41:14,838 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 16:41:14,839 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 16:41:14,839 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 16:41:14,839 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 16:41:14,839 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 16:41:14,840 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 16:41:14,840 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 16:41:14,840 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 16:41:14,841 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 16:41:14,841 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 16:41:14,841 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 16:41:14,841 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 16:41:14,841 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 16:41:14,842 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 16:41:14,892 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 16:41:14,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 16:41:14,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 16:41:14,914 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 16:41:14,914 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 16:41:14,915 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested9.i_3.bpl [2018-12-03 16:41:14,915 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested9.i_3.bpl' [2018-12-03 16:41:14,976 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 16:41:14,978 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 16:41:14,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 16:41:14,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 16:41:14,979 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 16:41:14,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:41:14" (1/1) ... [2018-12-03 16:41:15,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:41:14" (1/1) ... [2018-12-03 16:41:15,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 16:41:15,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 16:41:15,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 16:41:15,022 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 16:41:15,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:41:14" (1/1) ... [2018-12-03 16:41:15,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:41:14" (1/1) ... [2018-12-03 16:41:15,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:41:14" (1/1) ... [2018-12-03 16:41:15,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:41:14" (1/1) ... [2018-12-03 16:41:15,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:41:14" (1/1) ... [2018-12-03 16:41:15,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:41:14" (1/1) ... [2018-12-03 16:41:15,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:41:14" (1/1) ... [2018-12-03 16:41:15,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 16:41:15,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 16:41:15,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 16:41:15,054 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 16:41:15,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:41:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 16:41:15,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 16:41:15,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 16:41:15,447 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 16:41:15,447 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-03 16:41:15,448 INFO L202 PluginConnector]: Adding new model nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:41:15 BoogieIcfgContainer [2018-12-03 16:41:15,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 16:41:15,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 16:41:15,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 16:41:15,453 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 16:41:15,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:41:14" (1/2) ... [2018-12-03 16:41:15,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607bf3c0 and model type nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:41:15, skipping insertion in model container [2018-12-03 16:41:15,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:41:15" (2/2) ... [2018-12-03 16:41:15,457 INFO L112 eAbstractionObserver]: Analyzing ICFG nested9.i_3.bpl [2018-12-03 16:41:15,467 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 16:41:15,476 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 16:41:15,494 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 16:41:15,531 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 16:41:15,531 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 16:41:15,531 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 16:41:15,531 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 16:41:15,531 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 16:41:15,532 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 16:41:15,532 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 16:41:15,532 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 16:41:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2018-12-03 16:41:15,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-03 16:41:15,555 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:41:15,556 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-12-03 16:41:15,559 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:41:15,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:41:15,566 INFO L82 PathProgramCache]: Analyzing trace with hash 889599113, now seen corresponding path program 1 times [2018-12-03 16:41:15,569 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:41:15,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:41:15,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:41:15,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:41:15,628 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:41:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:41:15,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:41:15,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 16:41:15,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 16:41:15,787 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 16:41:15,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 16:41:15,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 16:41:15,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 16:41:15,807 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2018-12-03 16:41:16,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:41:16,013 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2018-12-03 16:41:16,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 16:41:16,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-12-03 16:41:16,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:41:16,026 INFO L225 Difference]: With dead ends: 15 [2018-12-03 16:41:16,026 INFO L226 Difference]: Without dead ends: 9 [2018-12-03 16:41:16,029 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-03 16:41:16,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-12-03 16:41:16,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-12-03 16:41:16,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-12-03 16:41:16,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-12-03 16:41:16,066 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-12-03 16:41:16,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:41:16,066 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-12-03 16:41:16,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 16:41:16,067 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-12-03 16:41:16,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-03 16:41:16,067 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:41:16,067 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-12-03 16:41:16,068 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:41:16,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:41:16,068 INFO L82 PathProgramCache]: Analyzing trace with hash 141423237, now seen corresponding path program 1 times [2018-12-03 16:41:16,068 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:41:16,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:41:16,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:41:16,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:41:16,070 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:41:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:41:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:41:16,231 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:41:16,232 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 16:41:16,233 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 9 with the following transitions: [2018-12-03 16:41:16,235 INFO L205 CegarAbsIntRunner]: [0], [2], [6], [8], [10], [14], [18] [2018-12-03 16:41:16,275 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 16:41:16,276 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 16:41:16,432 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 16:41:16,434 INFO L272 AbstractInterpreter]: Visited 7 different actions 10 times. Merged at 2 different actions 2 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-12-03 16:41:16,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:41:16,488 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 16:41:16,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:41:16,488 INFO L192 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 [2018-12-03 16:41:16,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:41:16,507 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 16:41:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:41:16,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 16:41:17,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:41:17,008 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 16:41:17,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:41:17,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-03 16:41:17,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2018-12-03 16:41:17,276 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 16:41:17,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 16:41:17,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 16:41:17,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-12-03 16:41:17,278 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 7 states. [2018-12-03 16:41:17,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:41:17,497 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2018-12-03 16:41:17,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-03 16:41:17,498 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2018-12-03 16:41:17,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:41:17,499 INFO L225 Difference]: With dead ends: 14 [2018-12-03 16:41:17,499 INFO L226 Difference]: Without dead ends: 12 [2018-12-03 16:41:17,501 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2018-12-03 16:41:17,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-03 16:41:17,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2018-12-03 16:41:17,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-12-03 16:41:17,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-12-03 16:41:17,506 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-12-03 16:41:17,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:41:17,507 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-12-03 16:41:17,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 16:41:17,507 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-12-03 16:41:17,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-03 16:41:17,508 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:41:17,508 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-12-03 16:41:17,508 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:41:17,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:41:17,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1531170369, now seen corresponding path program 1 times [2018-12-03 16:41:17,509 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:41:17,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:41:17,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:41:17,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:41:17,511 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:41:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:41:17,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:41:17,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:41:17,690 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 16:41:17,690 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-12-03 16:41:17,690 INFO L205 CegarAbsIntRunner]: [0], [2], [6], [8], [10], [14], [16], [18] [2018-12-03 16:41:17,692 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 16:41:17,692 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 16:41:17,742 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 16:41:17,743 INFO L272 AbstractInterpreter]: Visited 8 different actions 12 times. Merged at 3 different actions 3 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 0 variables. [2018-12-03 16:41:17,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:41:17,755 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 16:41:17,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:41:17,755 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 16:41:17,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:41:17,766 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 16:41:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:41:17,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 16:41:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:41:18,002 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 16:41:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:41:18,092 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 16:41:18,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2018-12-03 16:41:18,093 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 16:41:18,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-03 16:41:18,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-03 16:41:18,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-12-03 16:41:18,094 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 10 states. [2018-12-03 16:41:18,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:41:18,556 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2018-12-03 16:41:18,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-03 16:41:18,557 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-12-03 16:41:18,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:41:18,557 INFO L225 Difference]: With dead ends: 12 [2018-12-03 16:41:18,557 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 16:41:18,558 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-12-03 16:41:18,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 16:41:18,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 16:41:18,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 16:41:18,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 16:41:18,560 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-12-03 16:41:18,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:41:18,560 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 16:41:18,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-03 16:41:18,560 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 16:41:18,560 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 16:41:18,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 16:41:18,774 WARN L180 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-12-03 16:41:19,035 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 81) no Hoare annotation was computed. [2018-12-03 16:41:19,035 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 81) no Hoare annotation was computed. [2018-12-03 16:41:19,035 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 81) no Hoare annotation was computed. [2018-12-03 16:41:19,036 INFO L444 ceAbstractionStarter]: At program point L55(lines 41 55) the Hoare annotation is: (or (and (<= 0 ULTIMATE.start_main_~i~5) (<= ULTIMATE.start_main_~i~5 0)) (and (<= ULTIMATE.start_main_~j~5 (* 2 ULTIMATE.start_main_~i~5)) (<= ULTIMATE.start_main_~i~5 1) (<= 1 ULTIMATE.start_main_~i~5))) [2018-12-03 16:41:19,036 INFO L444 ceAbstractionStarter]: At program point L47(lines 47 56) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~j~5 (* 2 ULTIMATE.start_main_~i~5)))) (or (and .cse0 (<= ULTIMATE.start_main_~i~5 1) (< ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~n~5) (<= 1 ULTIMATE.start_main_~i~5)) (and .cse0 (<= (* 3 ULTIMATE.start_main_~i~5) ULTIMATE.start_main_~j~5) (<= 0 ULTIMATE.start_main_~i~5)))) [2018-12-03 16:41:19,037 INFO L444 ceAbstractionStarter]: At program point L78(lines 59 78) the Hoare annotation is: (and (exists ((ULTIMATE.start_main_~i~5 Int)) (and (<= ULTIMATE.start_main_~j~5 (* 2 ULTIMATE.start_main_~i~5)) (<= ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~k~5) (<= ULTIMATE.start_main_~i~5 1))) (<= ULTIMATE.start_main_~i~5 1) (< ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~n~5) (<= 1 ULTIMATE.start_main_~i~5)) [2018-12-03 16:41:19,037 INFO L444 ceAbstractionStarter]: At program point L72(lines 72 79) the Hoare annotation is: false [2018-12-03 16:41:19,038 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 80) no Hoare annotation was computed. [2018-12-03 16:41:19,038 INFO L444 ceAbstractionStarter]: At program point L66(lines 66 73) the Hoare annotation is: (and (= ULTIMATE.start___VERIFIER_assert_~cond 1) (exists ((ULTIMATE.start_main_~i~5 Int)) (and (<= ULTIMATE.start_main_~j~5 (* 2 ULTIMATE.start_main_~i~5)) (<= ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~k~5) (<= ULTIMATE.start_main_~i~5 1))) (<= ULTIMATE.start_main_~k~5 ULTIMATE.start_main_~i~5) (<= ULTIMATE.start_main_~i~5 1) (< ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~n~5) (<= 1 ULTIMATE.start_main_~i~5)) [2018-12-03 16:41:19,054 INFO L202 PluginConnector]: Adding new model nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 04:41:19 BoogieIcfgContainer [2018-12-03 16:41:19,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 16:41:19,055 INFO L168 Benchmark]: Toolchain (without parser) took 4078.48 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 694.7 MB). Free memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: -718.5 MB). Peak memory consumption was 167.8 MB. Max. memory is 7.1 GB. [2018-12-03 16:41:19,056 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 16:41:19,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.40 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 16:41:19,058 INFO L168 Benchmark]: Boogie Preprocessor took 27.31 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 16:41:19,058 INFO L168 Benchmark]: RCFGBuilder took 398.95 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. [2018-12-03 16:41:19,059 INFO L168 Benchmark]: TraceAbstraction took 3604.87 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 694.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -739.6 MB). Peak memory consumption was 146.7 MB. Max. memory is 7.1 GB. [2018-12-03 16:41:19,064 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 0.21 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 42.40 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 27.31 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 398.95 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 3604.87 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 694.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -739.6 MB). Peak memory consumption was 146.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((main_~j~5 <= 2 * main_~i~5 && main_~i~5 <= 1) && main_~i~5 < main_~n~5) && 1 <= main_~i~5) || ((main_~j~5 <= 2 * main_~i~5 && 3 * main_~i~5 <= main_~j~5) && 0 <= main_~i~5) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (0 <= main_~i~5 && main_~i~5 <= 0) || ((main_~j~5 <= 2 * main_~i~5 && main_~i~5 <= 1) && 1 <= main_~i~5) - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: ((((__VERIFIER_assert_~cond == 1 && (exists ULTIMATE.start_main_~i~5 : int :: (main_~j~5 <= 2 * ULTIMATE.start_main_~i~5 && ULTIMATE.start_main_~i~5 <= main_~k~5) && ULTIMATE.start_main_~i~5 <= 1)) && main_~k~5 <= main_~i~5) && main_~i~5 <= 1) && main_~i~5 < main_~n~5) && 1 <= main_~i~5 - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((exists ULTIMATE.start_main_~i~5 : int :: (main_~j~5 <= 2 * ULTIMATE.start_main_~i~5 && ULTIMATE.start_main_~i~5 <= main_~k~5) && ULTIMATE.start_main_~i~5 <= 1) && main_~i~5 <= 1) && main_~i~5 < main_~n~5) && 1 <= main_~i~5 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. SAFE Result, 3.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 10 SDtfs, 23 SDslu, 10 SDs, 0 SdLazy, 63 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 103 HoareAnnotationTreeSize, 5 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 47 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 53 ConstructedInterpolants, 6 QuantifiedInterpolants, 1924 SizeOfPredicates, 9 NumberOfNonLiveVariables, 94 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 10/18 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...