java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_exp_cong.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/insertion_sort.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 16:39:01,465 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 16:39:01,467 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 16:39:01,486 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 16:39:01,486 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 16:39:01,487 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 16:39:01,489 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 16:39:01,491 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 16:39:01,494 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 16:39:01,496 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 16:39:01,497 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 16:39:01,497 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 16:39:01,499 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 16:39:01,500 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 16:39:01,503 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 16:39:01,504 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 16:39:01,511 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 16:39:01,514 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 16:39:01,517 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 16:39:01,521 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 16:39:01,522 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 16:39:01,523 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 16:39:01,526 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 16:39:01,526 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 16:39:01,527 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 16:39:01,527 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 16:39:01,529 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 16:39:01,530 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 16:39:01,530 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 16:39:01,533 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 16:39:01,533 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 16:39:01,535 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 16:39:01,535 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 16:39:01,536 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 16:39:01,536 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 16:39:01,537 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 16:39:01,537 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_exp_cong.epf [2018-12-03 16:39:01,559 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 16:39:01,559 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 16:39:01,560 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 16:39:01,560 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 16:39:01,561 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 16:39:01,561 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 16:39:01,561 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 16:39:01,561 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 16:39:01,561 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 16:39:01,561 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 16:39:01,562 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 16:39:01,562 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 16:39:01,562 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 16:39:01,562 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 16:39:01,562 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 16:39:01,563 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 16:39:01,563 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 16:39:01,563 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 16:39:01,564 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 16:39:01,564 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 16:39:01,564 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 16:39:01,564 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 16:39:01,564 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 16:39:01,565 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 16:39:01,565 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 16:39:01,565 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 16:39:01,565 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 16:39:01,565 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 16:39:01,565 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 16:39:01,566 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 16:39:01,566 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 16:39:01,566 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 16:39:01,566 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 16:39:01,567 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 16:39:01,567 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 16:39:01,567 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 16:39:01,567 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 16:39:01,567 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 16:39:01,568 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 16:39:01,568 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 16:39:01,568 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 16:39:01,623 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 16:39:01,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 16:39:01,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 16:39:01,647 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 16:39:01,647 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 16:39:01,648 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/insertion_sort.i_3.bpl [2018-12-03 16:39:01,648 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/insertion_sort.i_3.bpl' [2018-12-03 16:39:01,691 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 16:39:01,693 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 16:39:01,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 16:39:01,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 16:39:01,695 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 16:39:01,713 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 04:39:01" (1/1) ... [2018-12-03 16:39:01,726 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 04:39:01" (1/1) ... [2018-12-03 16:39:01,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 16:39:01,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 16:39:01,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 16:39:01,738 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 16:39:01,751 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 04:39:01" (1/1) ... [2018-12-03 16:39:01,751 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 04:39:01" (1/1) ... [2018-12-03 16:39:01,752 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 04:39:01" (1/1) ... [2018-12-03 16:39:01,753 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 04:39:01" (1/1) ... [2018-12-03 16:39:01,757 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 04:39:01" (1/1) ... [2018-12-03 16:39:01,760 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 04:39:01" (1/1) ... [2018-12-03 16:39:01,761 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 04:39:01" (1/1) ... [2018-12-03 16:39:01,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 16:39:01,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 16:39:01,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 16:39:01,763 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 16:39:01,764 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 04:39:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 16:39:01,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 16:39:01,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 16:39:02,059 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 16:39:02,059 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-03 16:39:02,060 INFO L202 PluginConnector]: Adding new model insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:39:02 BoogieIcfgContainer [2018-12-03 16:39:02,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 16:39:02,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 16:39:02,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 16:39:02,064 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 16:39:02,065 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 04:39:01" (1/2) ... [2018-12-03 16:39:02,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c8651b and model type insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:39:02, skipping insertion in model container [2018-12-03 16:39:02,066 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 04:39:02" (2/2) ... [2018-12-03 16:39:02,068 INFO L112 eAbstractionObserver]: Analyzing ICFG insertion_sort.i_3.bpl [2018-12-03 16:39:02,079 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 16:39:02,089 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 16:39:02,109 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 16:39:02,150 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 16:39:02,150 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 16:39:02,150 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 16:39:02,150 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 16:39:02,151 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 16:39:02,151 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 16:39:02,151 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 16:39:02,151 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 16:39:02,169 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-12-03 16:39:02,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-03 16:39:02,187 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:39:02,188 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-03 16:39:02,193 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:39:02,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:39:02,201 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-12-03 16:39:02,204 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:39:02,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:39:02,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:39:02,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:39:02,263 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:39:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:39:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:39:02,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 16:39:02,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 16:39:02,437 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 16:39:02,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 16:39:02,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 16:39:02,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 16:39:02,457 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-12-03 16:39:02,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:39:02,519 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-12-03 16:39:02,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 16:39:02,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-12-03 16:39:02,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:39:02,534 INFO L225 Difference]: With dead ends: 9 [2018-12-03 16:39:02,535 INFO L226 Difference]: Without dead ends: 5 [2018-12-03 16:39:02,538 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 16:39:02,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-12-03 16:39:02,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-12-03 16:39:02,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-03 16:39:02,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-12-03 16:39:02,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-12-03 16:39:02,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:39:02,591 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-12-03 16:39:02,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 16:39:02,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-12-03 16:39:02,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 16:39:02,595 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:39:02,595 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 16:39:02,595 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:39:02,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:39:02,596 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-12-03 16:39:02,596 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:39:02,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:39:02,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:39:02,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:39:02,598 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:39:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:39:02,912 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 16:39:02,912 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:39:02,912 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 16:39:02,913 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2018-12-03 16:39:02,915 INFO L205 CegarAbsIntRunner]: [0], [5], [7], [9] [2018-12-03 16:39:02,957 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 16:39:02,957 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 16:39:03,892 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 16:39:03,894 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 16:39:03,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:39:03,928 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 16:39:03,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:39:03,928 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 16:39:03,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:39:03,938 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 16:39:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:39:03,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 16:39:04,105 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 16:39:04,121 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 16:39:04,122 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 16:39:04,149 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 16:39:04,150 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:16 [2018-12-03 16:39:04,174 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 16:39:04,175 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 16:39:04,737 WARN L180 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2018-12-03 16:39:04,747 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 16:39:04,748 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 16:39:04,749 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 16:39:04,758 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 16:39:04,759 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 16:39:04,760 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 16:39:04,772 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 16:39:04,773 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-03 16:39:04,823 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 16:39:04,827 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 16:39:04,860 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 16:39:04,863 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-12-03 16:39:04,894 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 16:39:04,895 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:39, output treesize:5 [2018-12-03 16:39:04,898 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 16:39:04,918 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 16:39:04,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2018-12-03 16:39:04,919 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 16:39:04,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 16:39:04,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 16:39:04,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 16:39:04,921 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-12-03 16:39:04,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:39:04,964 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2018-12-03 16:39:04,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 16:39:04,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-12-03 16:39:04,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:39:04,966 INFO L225 Difference]: With dead ends: 5 [2018-12-03 16:39:04,966 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 16:39:04,967 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 16:39:04,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 16:39:04,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 16:39:04,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 16:39:04,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 16:39:04,969 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2018-12-03 16:39:04,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:39:04,969 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 16:39:04,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 16:39:04,970 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 16:39:04,970 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 16:39:04,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 16:39:05,031 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 56) no Hoare annotation was computed. [2018-12-03 16:39:05,031 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 56) no Hoare annotation was computed. [2018-12-03 16:39:05,031 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 56) no Hoare annotation was computed. [2018-12-03 16:39:05,032 INFO L444 ceAbstractionStarter]: At program point L42(lines 42 54) the Hoare annotation is: false [2018-12-03 16:39:05,032 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 55) no Hoare annotation was computed. [2018-12-03 16:39:05,032 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 16:39:05,041 INFO L202 PluginConnector]: Adding new model insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 04:39:05 BoogieIcfgContainer [2018-12-03 16:39:05,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 16:39:05,042 INFO L168 Benchmark]: Toolchain (without parser) took 3350.67 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 707.3 MB). Free memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: -678.5 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2018-12-03 16:39:05,044 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 16:39:05,044 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.09 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 16:39:05,045 INFO L168 Benchmark]: Boogie Preprocessor took 24.55 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 16:39:05,046 INFO L168 Benchmark]: RCFGBuilder took 297.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-12-03 16:39:05,047 INFO L168 Benchmark]: TraceAbstraction took 2980.50 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 707.3 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -699.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 7.1 GB. [2018-12-03 16:39:05,051 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 44.09 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 24.55 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. * RCFGBuilder took 297.37 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 2980.50 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 707.3 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -699.6 MB). Peak memory consumption was 7.7 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, 2.8s 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, 0.2s 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, 1.0s 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, 0.1s 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...