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/20170304-DifficultPathPrograms/insertion_sort.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 19:02:40,196 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 19:02:40,200 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 19:02:40,214 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 19:02:40,214 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 19:02:40,215 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 19:02:40,216 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 19:02:40,218 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 19:02:40,220 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 19:02:40,221 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 19:02:40,222 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-12-03 19:02:40,245 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 [2018-12-03 19:02:40,266 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 19:02:40,266 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 19:02:40,268 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 19:02:40,271 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 19:02:40,271 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 19:02:40,271 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 19:02:40,272 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 19:02:40,272 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 19:02:40,272 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 19:02:40,272 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2018-12-03 19:02:40,272 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 19:02:40,273 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 19:02:40,273 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 19:02:40,273 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 19:02:40,274 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 19:02:40,274 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 19:02:40,274 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 19:02:40,274 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 19:02:40,274 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 19:02:40,275 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 19:02:40,275 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 19:02:40,275 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 19:02:40,275 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 19:02:40,275 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 19:02:40,276 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 19:02:40,277 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 19:02:40,277 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 19:02:40,277 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 19:02:40,277 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 19:02:40,277 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 19:02:40,278 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 19:02:40,278 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 19:02:40,278 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 19:02:40,279 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 19:02:40,279 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 19:02:40,279 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 19:02:40,279 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 19:02:40,279 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 19:02:40,279 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 19:02:40,280 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 19:02:40,330 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 19:02:40,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 19:02:40,345 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 19:02:40,347 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 19:02:40,348 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 19:02:40,348 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/insertion_sort.i_3.bpl [2018-12-03 19:02:40,349 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/insertion_sort.i_3.bpl' [2018-12-03 19:02:40,389 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 19:02:40,391 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 19:02:40,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 19:02:40,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 19:02:40,392 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 19:02:40,408 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 07:02:40" (1/1) ... [2018-12-03 19:02:40,419 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 07:02:40" (1/1) ... [2018-12-03 19:02:40,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 19:02:40,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 19:02:40,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 19:02:40,429 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 19:02:40,441 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 07:02:40" (1/1) ... [2018-12-03 19:02:40,441 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 07:02:40" (1/1) ... [2018-12-03 19:02:40,442 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 07:02:40" (1/1) ... [2018-12-03 19:02:40,442 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 07:02:40" (1/1) ... [2018-12-03 19:02:40,446 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 07:02:40" (1/1) ... [2018-12-03 19:02:40,448 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 07:02:40" (1/1) ... [2018-12-03 19:02:40,449 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 07:02:40" (1/1) ... [2018-12-03 19:02:40,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 19:02:40,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 19:02:40,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 19:02:40,452 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 19:02:40,453 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 07:02:40" (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 19:02:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 19:02:40,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 19:02:40,769 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 19:02:40,769 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-03 19:02:40,770 INFO L202 PluginConnector]: Adding new model insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:02:40 BoogieIcfgContainer [2018-12-03 19:02:40,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 19:02:40,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 19:02:40,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 19:02:40,776 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 19:02:40,776 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 07:02:40" (1/2) ... [2018-12-03 19:02:40,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100d40dd and model type insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:02:40, skipping insertion in model container [2018-12-03 19:02:40,778 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 07:02:40" (2/2) ... [2018-12-03 19:02:40,781 INFO L112 eAbstractionObserver]: Analyzing ICFG insertion_sort.i_3.bpl [2018-12-03 19:02:40,792 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 19:02:40,801 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 19:02:40,821 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 19:02:40,860 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 19:02:40,861 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 19:02:40,861 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 19:02:40,861 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 19:02:40,861 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 19:02:40,862 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 19:02:40,862 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 19:02:40,862 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 19:02:40,877 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-12-03 19:02:40,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-03 19:02:40,884 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:02:40,886 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-03 19:02:40,889 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:02:40,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:02:40,896 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-12-03 19:02:40,898 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:02:40,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:02:40,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:02:40,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:02:40,947 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:02:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:02:41,101 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 19:02:41,103 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:02:41,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 19:02:41,104 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:02:41,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:02:41,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:02:41,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:02:41,124 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-12-03 19:02:41,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:02:41,186 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-12-03 19:02:41,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:02:41,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-12-03 19:02:41,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:02:41,212 INFO L225 Difference]: With dead ends: 9 [2018-12-03 19:02:41,212 INFO L226 Difference]: Without dead ends: 5 [2018-12-03 19:02:41,224 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:02:41,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-12-03 19:02:41,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-12-03 19:02:41,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-03 19:02:41,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-12-03 19:02:41,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-12-03 19:02:41,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:02:41,295 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-12-03 19:02:41,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:02:41,295 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-12-03 19:02:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 19:02:41,296 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:02:41,296 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 19:02:41,296 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:02:41,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:02:41,297 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-12-03 19:02:41,297 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:02:41,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:02:41,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:02:41,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:02:41,299 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:02:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:02:41,480 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 19:02:41,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 19:02:41,480 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 19:02:41,481 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2018-12-03 19:02:41,483 INFO L205 CegarAbsIntRunner]: [0], [5], [7], [9] [2018-12-03 19:02:41,539 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 19:02:41,539 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 19:02:41,627 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-12-03 19:02:51,466 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 19:02:51,468 INFO L272 AbstractInterpreter]: Visited 4 different actions 18 times. Merged at 3 different actions 13 times. Widened at 1 different actions 3 times. Found 2 fixpoints after 2 different actions. Largest state had 0 variables. [2018-12-03 19:02:51,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:02:51,515 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 19:02:51,515 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 19:02:51,516 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 19:02:51,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:02:51,536 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 19:02:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:02:51,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 19:02:51,728 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 19:02:51,761 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 19:02:51,763 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 19:02:51,817 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 19:02:51,818 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:16 [2018-12-03 19:02:51,854 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 19:02:51,854 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 19:02:52,171 WARN L180 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2018-12-03 19:02:52,184 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 19:02:52,186 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 19:02:52,188 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 19:02:52,194 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 19:02:52,195 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 19:02:52,219 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 19:02:52,221 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 19:02:52,222 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-03 19:02:52,282 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 19:02:52,295 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 19:02:52,305 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 19:02:52,307 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-12-03 19:02:52,317 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 19:02:52,317 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:39, output treesize:5 [2018-12-03 19:02:52,320 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 19:02:52,341 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 19:02:52,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2018-12-03 19:02:52,341 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 19:02:52,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 19:02:52,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 19:02:52,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 19:02:52,343 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-12-03 19:02:52,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:02:52,358 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2018-12-03 19:02:52,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 19:02:52,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-12-03 19:02:52,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:02:52,360 INFO L225 Difference]: With dead ends: 5 [2018-12-03 19:02:52,360 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 19:02:52,361 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 19:02:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 19:02:52,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 19:02:52,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 19:02:52,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 19:02:52,362 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2018-12-03 19:02:52,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:02:52,363 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 19:02:52,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 19:02:52,363 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 19:02:52,363 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 19:02:52,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 19:02:52,413 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 56) no Hoare annotation was computed. [2018-12-03 19:02:52,414 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 56) no Hoare annotation was computed. [2018-12-03 19:02:52,414 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 56) no Hoare annotation was computed. [2018-12-03 19:02:52,414 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 55) no Hoare annotation was computed. [2018-12-03 19:02:52,415 INFO L444 ceAbstractionStarter]: At program point L42(lines 42 54) the Hoare annotation is: false [2018-12-03 19:02:52,415 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 19:02:52,424 INFO L202 PluginConnector]: Adding new model insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 07:02:52 BoogieIcfgContainer [2018-12-03 19:02:52,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 19:02:52,425 INFO L168 Benchmark]: Toolchain (without parser) took 12035.69 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 701.5 MB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -111.1 MB). Peak memory consumption was 590.4 MB. Max. memory is 7.1 GB. [2018-12-03 19:02:52,427 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 19:02:52,427 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.55 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 19:02:52,428 INFO L168 Benchmark]: Boogie Preprocessor took 22.40 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 19:02:52,429 INFO L168 Benchmark]: RCFGBuilder took 318.66 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 19:02:52,429 INFO L168 Benchmark]: TraceAbstraction took 11653.70 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 701.5 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -132.2 MB). Peak memory consumption was 569.3 MB. Max. memory is 7.1 GB. [2018-12-03 19:02:52,434 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 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.55 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 22.40 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. * RCFGBuilder took 318.66 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 11653.70 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 701.5 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -132.2 MB). Peak memory consumption was 569.3 MB. 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, 11.5s 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, 0.1s 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, 10.0s 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, 0.9s 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...