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/ValueTerminatedArrayIteration01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-df3cc4e-m [2019-01-11 11:40:35,031 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-11 11:40:35,033 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-11 11:40:35,045 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-11 11:40:35,045 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-11 11:40:35,046 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-11 11:40:35,047 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-11 11:40:35,049 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-11 11:40:35,051 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-11 11:40:35,052 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-11 11:40:35,052 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-01-11 11:40:35,076 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 [2019-01-11 11:40:35,090 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-11 11:40:35,091 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-11 11:40:35,091 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-11 11:40:35,092 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-11 11:40:35,092 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-11 11:40:35,092 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-11 11:40:35,092 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-11 11:40:35,092 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-11 11:40:35,093 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-11 11:40:35,093 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-01-11 11:40:35,094 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-01-11 11:40:35,094 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-11 11:40:35,094 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-11 11:40:35,097 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-11 11:40:35,097 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-11 11:40:35,097 INFO L133 SettingsManager]: * Use SBE=true [2019-01-11 11:40:35,098 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-11 11:40:35,098 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-11 11:40:35,098 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-11 11:40:35,098 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-11 11:40:35,098 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-11 11:40:35,098 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-11 11:40:35,099 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-11 11:40:35,099 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-11 11:40:35,099 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-11 11:40:35,099 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-11 11:40:35,099 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-11 11:40:35,100 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-11 11:40:35,102 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-11 11:40:35,102 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-11 11:40:35,102 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in -t:2000 [2019-01-11 11:40:35,102 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-11 11:40:35,102 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-11 11:40:35,103 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-11 11:40:35,103 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-11 11:40:35,103 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-11 11:40:35,103 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in [2019-01-11 11:40:35,103 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-11 11:40:35,104 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-11 11:40:35,146 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-11 11:40:35,159 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-11 11:40:35,163 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-11 11:40:35,165 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-11 11:40:35,165 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-11 11:40:35,166 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/ValueTerminatedArrayIteration01.bpl [2019-01-11 11:40:35,166 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/ValueTerminatedArrayIteration01.bpl' [2019-01-11 11:40:35,201 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-11 11:40:35,202 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-11 11:40:35,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-11 11:40:35,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-11 11:40:35,204 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-11 11:40:35,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:40:35" (1/1) ... [2019-01-11 11:40:35,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:40:35" (1/1) ... [2019-01-11 11:40:35,238 WARN L165 Inliner]: Program contained no entry procedure! [2019-01-11 11:40:35,238 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-01-11 11:40:35,239 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-01-11 11:40:35,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-11 11:40:35,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-11 11:40:35,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-11 11:40:35,242 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-11 11:40:35,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:40:35" (1/1) ... [2019-01-11 11:40:35,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:40:35" (1/1) ... [2019-01-11 11:40:35,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:40:35" (1/1) ... [2019-01-11 11:40:35,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:40:35" (1/1) ... [2019-01-11 11:40:35,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:40:35" (1/1) ... [2019-01-11 11:40:35,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:40:35" (1/1) ... [2019-01-11 11:40:35,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:40:35" (1/1) ... [2019-01-11 11:40:35,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-11 11:40:35,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-11 11:40:35,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-11 11:40:35,265 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-11 11:40:35,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:40:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory: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 [2019-01-11 11:40:35,336 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-01-11 11:40:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-11 11:40:35,336 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-11 11:40:35,541 INFO L278 CfgBuilder]: Using library mode [2019-01-11 11:40:35,542 INFO L286 CfgBuilder]: Removed 0 assue(true) statements. [2019-01-11 11:40:35,543 INFO L202 PluginConnector]: Adding new model ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 11:40:35 BoogieIcfgContainer [2019-01-11 11:40:35,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-11 11:40:35,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-11 11:40:35,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-11 11:40:35,548 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-11 11:40:35,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:40:35" (1/2) ... [2019-01-11 11:40:35,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@528695e1 and model type ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 11:40:35, skipping insertion in model container [2019-01-11 11:40:35,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 11:40:35" (2/2) ... [2019-01-11 11:40:35,552 INFO L112 eAbstractionObserver]: Analyzing ICFG ValueTerminatedArrayIteration01.bpl [2019-01-11 11:40:35,562 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-11 11:40:35,572 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-11 11:40:35,589 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-11 11:40:35,631 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-11 11:40:35,631 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-11 11:40:35,631 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-11 11:40:35,632 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-11 11:40:35,632 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-11 11:40:35,632 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-11 11:40:35,632 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-11 11:40:35,632 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-11 11:40:35,649 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-01-11 11:40:35,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 11:40:35,669 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:40:35,670 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 11:40:35,673 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:40:35,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:40:35,680 INFO L82 PathProgramCache]: Analyzing trace with hash 29984, now seen corresponding path program 1 times [2019-01-11 11:40:35,681 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:40:35,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:40:35,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:40:35,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:40:35,728 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:40:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:40:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:40:35,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-11 11:40:35,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-11 11:40:35,815 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-11 11:40:35,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-11 11:40:35,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-11 11:40:35,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-11 11:40:35,832 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2019-01-11 11:40:35,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 11:40:35,897 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-01-11 11:40:35,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-11 11:40:35,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-01-11 11:40:35,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 11:40:35,917 INFO L225 Difference]: With dead ends: 9 [2019-01-11 11:40:35,918 INFO L226 Difference]: Without dead ends: 5 [2019-01-11 11:40:35,921 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-11 11:40:35,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-01-11 11:40:35,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-01-11 11:40:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-01-11 11:40:35,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-01-11 11:40:35,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-01-11 11:40:35,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 11:40:35,962 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-01-11 11:40:35,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-11 11:40:35,962 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-01-11 11:40:35,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-11 11:40:35,963 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:40:35,963 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-11 11:40:35,964 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:40:35,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:40:35,964 INFO L82 PathProgramCache]: Analyzing trace with hash 927558, now seen corresponding path program 1 times [2019-01-11 11:40:35,965 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:40:35,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:40:35,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:40:35,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:40:35,966 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:40:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:40:36,254 WARN L181 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 13 [2019-01-11 11:40:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:40:36,288 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:40:36,288 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 11:40:36,289 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2019-01-11 11:40:36,292 INFO L207 CegarAbsIntRunner]: [0], [4], [6], [7] [2019-01-11 11:40:36,359 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-01-11 11:40:36,359 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 11:40:38,294 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 11:40:38,297 INFO L272 AbstractInterpreter]: Visited 4 different actions 22 times. Merged at 3 different actions 17 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-11 11:40:38,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:40:38,306 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 11:40:38,306 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:40:38,306 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 [2019-01-11 11:40:38,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:40:38,321 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 11:40:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:40:38,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 11:40:38,497 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 6 treesize of output 5 [2019-01-11 11:40:38,498 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 11:40:38,537 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:40:38,537 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-01-11 11:40:38,585 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2019-01-11 11:40:38,586 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 11:40:38,658 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:40:38,659 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:21 [2019-01-11 11:40:38,799 WARN L181 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2019-01-11 11:40:38,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:40:38,801 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 11:40:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:40:38,969 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-11 11:40:38,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2019-01-11 11:40:38,969 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-11 11:40:38,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-11 11:40:38,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-11 11:40:38,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-01-11 11:40:38,972 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 6 states. [2019-01-11 11:40:39,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 11:40:39,173 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2019-01-11 11:40:39,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-11 11:40:39,174 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-01-11 11:40:39,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 11:40:39,175 INFO L225 Difference]: With dead ends: 10 [2019-01-11 11:40:39,175 INFO L226 Difference]: Without dead ends: 7 [2019-01-11 11:40:39,176 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-01-11 11:40:39,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-01-11 11:40:39,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-01-11 11:40:39,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-01-11 11:40:39,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-01-11 11:40:39,181 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-01-11 11:40:39,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 11:40:39,181 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-01-11 11:40:39,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-11 11:40:39,181 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-01-11 11:40:39,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-11 11:40:39,182 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:40:39,183 INFO L402 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2019-01-11 11:40:39,183 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:40:39,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:40:39,184 INFO L82 PathProgramCache]: Analyzing trace with hash 891320966, now seen corresponding path program 2 times [2019-01-11 11:40:39,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:40:39,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:40:39,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:40:39,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:40:39,187 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:40:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:40:39,640 WARN L181 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 13 [2019-01-11 11:40:39,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-01-11 11:40:39,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:40:39,710 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 11:40:39,711 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-01-11 11:40:39,711 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-01-11 11:40:39,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:40:39,711 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 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 [2019-01-11 11:40:39,721 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-01-11 11:40:39,721 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-01-11 11:40:39,747 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-01-11 11:40:39,747 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-01-11 11:40:39,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 11:40:39,768 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 6 treesize of output 5 [2019-01-11 11:40:39,769 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 11:40:39,839 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:40:39,839 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-01-11 11:40:40,026 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 49 [2019-01-11 11:40:40,034 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 8 xjuncts. [2019-01-11 11:40:40,209 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:40:40,210 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:45, output treesize:69 [2019-01-11 11:40:40,587 WARN L181 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 9 [2019-01-11 11:40:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:40:40,589 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 11:40:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:40:40,835 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-11 11:40:40,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 10 [2019-01-11 11:40:40,835 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-11 11:40:40,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-01-11 11:40:40,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-01-11 11:40:40,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2019-01-11 11:40:40,837 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 9 states. [2019-01-11 11:40:40,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 11:40:40,929 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-01-11 11:40:40,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-11 11:40:40,929 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 6 [2019-01-11 11:40:40,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 11:40:40,930 INFO L225 Difference]: With dead ends: 9 [2019-01-11 11:40:40,930 INFO L226 Difference]: Without dead ends: 0 [2019-01-11 11:40:40,931 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=90, Unknown=0, NotChecked=0, Total=156 [2019-01-11 11:40:40,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-11 11:40:40,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-11 11:40:40,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-11 11:40:40,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-11 11:40:40,931 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2019-01-11 11:40:40,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 11:40:40,932 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-11 11:40:40,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-01-11 11:40:40,932 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-11 11:40:40,932 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-11 11:40:40,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-11 11:40:40,997 INFO L444 ceAbstractionStarter]: At program point L17-1(lines 17 19) the Hoare annotation is: (and (< i (+ end 1)) (= 42 (select a end))) [2019-01-11 11:40:40,997 INFO L448 ceAbstractionStarter]: For program point mainENTRY(lines 11 21) no Hoare annotation was computed. [2019-01-11 11:40:40,997 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 11 21) no Hoare annotation was computed. [2019-01-11 11:40:40,997 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 21) no Hoare annotation was computed. [2019-01-11 11:40:40,997 INFO L448 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-01-11 11:40:40,998 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONASSERT(line 20) no Hoare annotation was computed. [2019-01-11 11:40:41,005 INFO L202 PluginConnector]: Adding new model ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 11:40:41 BoogieIcfgContainer [2019-01-11 11:40:41,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-11 11:40:41,006 INFO L168 Benchmark]: Toolchain (without parser) took 5804.91 ms. Allocated memory was 136.8 MB in the beginning and 364.9 MB in the end (delta: 228.1 MB). Free memory was 103.3 MB in the beginning and 258.2 MB in the end (delta: -154.9 MB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. [2019-01-11 11:40:41,008 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory is still 104.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-11 11:40:41,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.05 ms. Allocated memory is still 136.8 MB. Free memory was 103.3 MB in the beginning and 101.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-01-11 11:40:41,009 INFO L168 Benchmark]: Boogie Preprocessor took 22.77 ms. Allocated memory is still 136.8 MB. Free memory was 101.2 MB in the beginning and 100.4 MB in the end (delta: 839.4 kB). Peak memory consumption was 839.4 kB. Max. memory is 7.1 GB. [2019-01-11 11:40:41,010 INFO L168 Benchmark]: RCFGBuilder took 278.01 ms. Allocated memory is still 136.8 MB. Free memory was 100.0 MB in the beginning and 91.7 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 7.1 GB. [2019-01-11 11:40:41,011 INFO L168 Benchmark]: TraceAbstraction took 5461.91 ms. Allocated memory was 136.8 MB in the beginning and 364.9 MB in the end (delta: 228.1 MB). Free memory was 91.3 MB in the beginning and 258.2 MB in the end (delta: -167.0 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2019-01-11 11:40:41,017 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 0.22 ms. Allocated memory is still 136.8 MB. Free memory is still 104.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 38.05 ms. Allocated memory is still 136.8 MB. Free memory was 103.3 MB in the beginning and 101.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.77 ms. Allocated memory is still 136.8 MB. Free memory was 101.2 MB in the beginning and 100.4 MB in the end (delta: 839.4 kB). Peak memory consumption was 839.4 kB. Max. memory is 7.1 GB. * RCFGBuilder took 278.01 ms. Allocated memory is still 136.8 MB. Free memory was 100.0 MB in the beginning and 91.7 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5461.91 ms. Allocated memory was 136.8 MB in the beginning and 364.9 MB in the end (delta: 228.1 MB). Free memory was 91.3 MB in the beginning and 258.2 MB in the end (delta: -167.0 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: 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: 17]: Loop Invariant Derived loop invariant: i < end + 1 && 42 == a[end] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 5.3s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6 SDtfs, 5 SDslu, 0 SDs, 0 SdLazy, 30 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.0s 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, 5 NumberOfFragments, 11 HoareAnnotationTreeSize, 1 FomulaSimplifications, 60 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 55 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 26 ConstructedInterpolants, 4 QuantifiedInterpolants, 1239 SizeOfPredicates, 2 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 1/21 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...