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_compound_exp_cong.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/insertion_sort.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 15:35:35,697 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 15:35:35,699 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 15:35:35,715 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-12-03 15:35:35,772 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2018-12-03 15:35:35,788 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 15:35:35,788 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 15:35:35,789 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 15:35:35,789 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 15:35:35,790 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 15:35:35,790 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 15:35:35,790 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 15:35:35,790 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 15:35:35,790 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 15:35:35,790 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 15:35:35,791 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 15:35:35,791 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 15:35:35,791 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 15:35:35,791 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 15:35:35,791 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 15:35:35,793 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 15:35:35,794 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 15:35:35,794 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 15:35:35,794 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 15:35:35,796 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 15:35:35,796 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 15:35:35,796 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 15:35:35,797 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 15:35:35,797 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 15:35:35,797 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 15:35:35,797 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 15:35:35,797 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 15:35:35,798 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 15:35:35,798 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 15:35:35,798 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 15:35:35,798 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 15:35:35,799 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 15:35:35,799 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 15:35:35,799 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 15:35:35,799 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 15:35:35,800 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 15:35:35,800 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 15:35:35,800 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 15:35:35,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 15:35:35,800 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 15:35:35,801 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 15:35:35,853 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 15:35:35,873 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 15:35:35,878 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 15:35:35,879 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 15:35:35,879 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 15:35:35,880 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/insertion_sort.i_3.bpl [2018-12-03 15:35:35,881 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/insertion_sort.i_3.bpl' [2018-12-03 15:35:35,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 15:35:35,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 15:35:35,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 15:35:35,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 15:35:35,922 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 15:35:35,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:35:35" (1/1) ... [2018-12-03 15:35:35,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:35:35" (1/1) ... [2018-12-03 15:35:35,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 15:35:35,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 15:35:35,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 15:35:35,958 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 15:35:35,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:35:35" (1/1) ... [2018-12-03 15:35:35,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:35:35" (1/1) ... [2018-12-03 15:35:35,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:35:35" (1/1) ... [2018-12-03 15:35:35,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:35:35" (1/1) ... [2018-12-03 15:35:35,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:35:35" (1/1) ... [2018-12-03 15:35:35,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:35:35" (1/1) ... [2018-12-03 15:35:35,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:35:35" (1/1) ... [2018-12-03 15:35:35,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 15:35:35,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 15:35:35,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 15:35:35,980 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 15:35:35,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:35:35" (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: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 15:35:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 15:35:36,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 15:35:36,326 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 15:35:36,326 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-03 15:35:36,327 INFO L202 PluginConnector]: Adding new model insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:35:36 BoogieIcfgContainer [2018-12-03 15:35:36,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 15:35:36,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 15:35:36,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 15:35:36,331 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 15:35:36,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:35:35" (1/2) ... [2018-12-03 15:35:36,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1b894 and model type insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 03:35:36, skipping insertion in model container [2018-12-03 15:35:36,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:35:36" (2/2) ... [2018-12-03 15:35:36,337 INFO L112 eAbstractionObserver]: Analyzing ICFG insertion_sort.i_3.bpl [2018-12-03 15:35:36,348 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 15:35:36,358 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 15:35:36,378 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 15:35:36,419 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 15:35:36,419 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 15:35:36,420 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 15:35:36,420 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 15:35:36,420 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 15:35:36,420 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 15:35:36,420 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 15:35:36,421 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 15:35:36,437 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-12-03 15:35:36,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-03 15:35:36,447 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 15:35:36,448 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-03 15:35:36,452 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 15:35:36,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:35:36,464 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-12-03 15:35:36,467 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 15:35:36,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:35:36,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:35:36,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:35:36,524 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 15:35:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:35:36,808 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 15:35:36,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 15:35:36,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 15:35:36,810 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 15:35:36,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 15:35:36,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 15:35:36,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 15:35:36,831 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-12-03 15:35:36,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 15:35:36,865 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-12-03 15:35:36,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 15:35:36,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-12-03 15:35:36,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 15:35:36,894 INFO L225 Difference]: With dead ends: 9 [2018-12-03 15:35:36,895 INFO L226 Difference]: Without dead ends: 5 [2018-12-03 15:35:36,899 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 15:35:36,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-12-03 15:35:36,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-12-03 15:35:36,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-03 15:35:36,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-12-03 15:35:36,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-12-03 15:35:36,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 15:35:36,932 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-12-03 15:35:36,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 15:35:36,932 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-12-03 15:35:36,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 15:35:36,933 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 15:35:36,933 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 15:35:36,933 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 15:35:36,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:35:36,934 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-12-03 15:35:36,934 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 15:35:36,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:35:36,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:35:36,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:35:36,936 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 15:35:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:35:37,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 15:35:37,139 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 15:35:37,139 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 15:35:37,140 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2018-12-03 15:35:37,143 INFO L205 CegarAbsIntRunner]: [0], [5], [7], [9] [2018-12-03 15:35:37,188 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 15:35:37,188 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 15:35:38,517 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 15:35:38,519 INFO L272 AbstractInterpreter]: Visited 4 different actions 13 times. Merged at 3 different actions 9 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-12-03 15:35:38,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:35:38,531 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 15:35:38,532 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 15:35:38,532 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 15:35:38,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:35:38,553 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 15:35:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:35:38,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 15:35:38,719 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 15:35:38,727 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 20 [2018-12-03 15:35:38,728 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 15:35:38,752 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 15:35:38,752 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:16 [2018-12-03 15:35:38,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 15:35:38,827 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 15:35:39,389 WARN L180 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2018-12-03 15:35:39,398 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 15:35:39,399 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-12-03 15:35:39,401 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 15:35:39,432 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 15:35:39,433 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2018-12-03 15:35:39,434 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 15:35:39,439 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-12-03 15:35:39,441 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-03 15:35:39,491 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 15:35:39,494 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 15:35:39,501 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2018-12-03 15:35:39,505 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-12-03 15:35:39,556 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 15:35:39,557 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:39, output treesize:5 [2018-12-03 15:35:39,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 15:35:39,580 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 15:35:39,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2018-12-03 15:35:39,581 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 15:35:39,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 15:35:39,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 15:35:39,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 15:35:39,582 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-12-03 15:35:39,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 15:35:39,597 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2018-12-03 15:35:39,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 15:35:39,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-12-03 15:35:39,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 15:35:39,599 INFO L225 Difference]: With dead ends: 5 [2018-12-03 15:35:39,599 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 15:35:39,600 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 15:35:39,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 15:35:39,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 15:35:39,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 15:35:39,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 15:35:39,602 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2018-12-03 15:35:39,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 15:35:39,603 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 15:35:39,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 15:35:39,603 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 15:35:39,603 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 15:35:39,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 15:35:39,634 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 56) no Hoare annotation was computed. [2018-12-03 15:35:39,634 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 56) no Hoare annotation was computed. [2018-12-03 15:35:39,634 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 56) no Hoare annotation was computed. [2018-12-03 15:35:39,635 INFO L444 ceAbstractionStarter]: At program point L42(lines 42 54) the Hoare annotation is: false [2018-12-03 15:35:39,635 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 55) no Hoare annotation was computed. [2018-12-03 15:35:39,635 INFO L444 ceAbstractionStarter]: At program point L53(lines 26 53) the Hoare annotation is: (or (<= (select ULTIMATE.start_main_~v~5 0) (select ULTIMATE.start_main_~v~5 1)) (and (<= 1 ULTIMATE.start_main_~j~5) (<= ULTIMATE.start_main_~j~5 1))) [2018-12-03 15:35:39,645 INFO L202 PluginConnector]: Adding new model insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 03:35:39 BoogieIcfgContainer [2018-12-03 15:35:39,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 15:35:39,646 INFO L168 Benchmark]: Toolchain (without parser) took 3726.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 713.0 MB). Free memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: -696.1 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2018-12-03 15:35:39,647 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 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 15:35:39,648 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.98 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 15:35:39,649 INFO L168 Benchmark]: Boogie Preprocessor took 21.84 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 15:35:39,649 INFO L168 Benchmark]: RCFGBuilder took 346.77 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 15:35:39,650 INFO L168 Benchmark]: TraceAbstraction took 3317.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 713.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -717.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 15:35:39,654 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 0.20 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 35.98 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 21.84 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 346.77 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 3317.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 713.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -717.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: 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: 42]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: main_~v~5[0] <= main_~v~5[1] || (1 <= main_~j~5 && main_~j~5 <= 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 3.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 16 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 151 SizeOfPredicates, 7 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...