java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/half.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:25:27,384 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:25:27,386 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:25:27,399 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:25:27,400 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:25:27,401 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:25:27,402 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:25:27,404 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:25:27,406 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:25:27,406 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:25:27,407 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:25:27,408 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:25:27,409 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:25:27,410 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:25:27,411 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:25:27,412 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:25:27,412 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:25:27,414 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:25:27,416 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:25:27,418 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:25:27,419 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:25:27,420 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:25:27,422 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:25:27,423 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:25:27,423 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:25:27,424 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:25:27,425 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:25:27,425 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:25:27,426 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:25:27,427 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:25:27,428 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:25:27,428 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 13:25:27,431 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:25:27,439 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:25:27,440 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:25:27,441 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:25:27,441 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:25:27,442 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:25:27,442 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:25:27,442 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:25:27,442 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:25:27,510 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:25:27,527 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:25:27,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:25:27,536 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:25:27,537 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:25:27,538 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/half.i_3.bpl [2018-07-25 13:25:27,538 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/half.i_3.bpl' [2018-07-25 13:25:27,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:25:27,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:25:27,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:25:27,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:25:27,595 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:25:27,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:27" (1/1) ... [2018-07-25 13:25:27,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:27" (1/1) ... [2018-07-25 13:25:27,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:25:27,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:25:27,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:25:27,637 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:25:27,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:27" (1/1) ... [2018-07-25 13:25:27,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:27" (1/1) ... [2018-07-25 13:25:27,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:27" (1/1) ... [2018-07-25 13:25:27,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:27" (1/1) ... [2018-07-25 13:25:27,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:27" (1/1) ... [2018-07-25 13:25:27,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:27" (1/1) ... [2018-07-25 13:25:27,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:27" (1/1) ... [2018-07-25 13:25:27,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:25:27,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:25:27,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:25:27,660 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:25:27,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:27" (1/1) ... [2018-07-25 13:25:27,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 13:25:27,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 13:25:27,936 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 13:25:27,937 INFO L202 PluginConnector]: Adding new model half.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:25:27 BoogieIcfgContainer [2018-07-25 13:25:27,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:25:27,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:25:27,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:25:27,943 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:25:27,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:27" (1/2) ... [2018-07-25 13:25:27,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27899e51 and model type half.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:25:27, skipping insertion in model container [2018-07-25 13:25:27,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:25:27" (2/2) ... [2018-07-25 13:25:27,948 INFO L112 eAbstractionObserver]: Analyzing ICFG half.i_3.bpl [2018-07-25 13:25:27,959 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:25:27,968 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:25:28,023 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:25:28,024 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:25:28,024 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:25:28,024 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 13:25:28,025 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:25:28,025 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:25:28,025 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:25:28,026 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:25:28,026 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:25:28,046 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 13:25:28,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 13:25:28,061 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:28,063 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 13:25:28,064 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:28,070 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-07-25 13:25:28,077 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:28,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:28,234 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:25:28,234 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 13:25:28,242 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 13:25:28,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 13:25:28,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 13:25:28,259 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-25 13:25:28,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:28,296 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-07-25 13:25:28,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 13:25:28,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-25 13:25:28,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:28,313 INFO L225 Difference]: With dead ends: 10 [2018-07-25 13:25:28,313 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 13:25:28,317 INFO L574 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 [2018-07-25 13:25:28,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 13:25:28,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 13:25:28,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 13:25:28,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 13:25:28,358 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 13:25:28,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:28,359 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 13:25:28,359 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 13:25:28,359 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 13:25:28,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 13:25:28,360 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:28,360 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 13:25:28,361 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:28,361 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-07-25 13:25:28,361 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:28,430 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:28,430 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 13:25:28,432 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:25:28,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:25:28,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:25:28,434 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-07-25 13:25:28,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:28,501 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 13:25:28,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:25:28,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-25 13:25:28,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:28,503 INFO L225 Difference]: With dead ends: 11 [2018-07-25 13:25:28,503 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 13:25:28,505 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:25:28,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 13:25:28,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 13:25:28,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 13:25:28,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 13:25:28,510 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 13:25:28,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:28,510 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 13:25:28,510 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:25:28,511 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 13:25:28,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 13:25:28,511 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:28,511 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 13:25:28,512 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:28,512 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-07-25 13:25:28,512 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:28,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:28,574 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:28,574 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 13:25:28,576 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:25:28,577 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:25:28,577 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:25:28,578 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2018-07-25 13:25:28,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:28,590 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 13:25:28,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:25:28,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-07-25 13:25:28,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:28,591 INFO L225 Difference]: With dead ends: 9 [2018-07-25 13:25:28,591 INFO L226 Difference]: Without dead ends: 0 [2018-07-25 13:25:28,592 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:25:28,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-25 13:25:28,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-25 13:25:28,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-25 13:25:28,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-25 13:25:28,594 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-07-25 13:25:28,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:28,594 INFO L472 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-25 13:25:28,594 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:25:28,594 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-25 13:25:28,595 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-25 13:25:28,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-25 13:25:28,761 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 1 48) the Hoare annotation is: false [2018-07-25 13:25:28,761 INFO L425 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 48) the Hoare annotation is: true [2018-07-25 13:25:28,761 INFO L422 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 48) no Hoare annotation was computed. [2018-07-25 13:25:28,763 INFO L418 ceAbstractionStarter]: At program point L25(lines 25 36) the Hoare annotation is: (let ((.cse0 (* 2 ULTIMATE.start_main_~n~5))) (or (and (<= (+ ULTIMATE.start_main_~i~5 1) .cse0) (<= ULTIMATE.start_main_~n~5 ULTIMATE.start_main_~k~5) (<= ULTIMATE.start_main_~i~5 1) (<= 1 ULTIMATE.start_main_~i~5)) (and (<= ULTIMATE.start_main_~i~5 .cse0) (<= .cse0 ULTIMATE.start_main_~i~5) (<= 0 ULTIMATE.start_main_~i~5) (<= ULTIMATE.start_main_~i~5 0)))) [2018-07-25 13:25:28,763 INFO L418 ceAbstractionStarter]: At program point L45(lines 22 45) the Hoare annotation is: (let ((.cse0 (* 2 ULTIMATE.start_main_~n~5))) (or (and (<= (+ ULTIMATE.start_main_~i~5 1) .cse0) (<= ULTIMATE.start_main_~n~5 ULTIMATE.start_main_~k~5) (<= ULTIMATE.start_main_~i~5 1) (<= 1 ULTIMATE.start_main_~i~5)) (and (<= ULTIMATE.start_main_~i~5 .cse0) (<= .cse0 ULTIMATE.start_main_~i~5) (<= 0 ULTIMATE.start_main_~i~5) (<= ULTIMATE.start_main_~i~5 0)))) [2018-07-25 13:25:28,764 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 47) the Hoare annotation is: false [2018-07-25 13:25:28,764 INFO L418 ceAbstractionStarter]: At program point L35(lines 35 46) the Hoare annotation is: false [2018-07-25 13:25:28,777 INFO L202 PluginConnector]: Adding new model half.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:25:28 BoogieIcfgContainer [2018-07-25 13:25:28,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:25:28,778 INFO L168 Benchmark]: Toolchain (without parser) took 1185.89 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-25 13:25:28,780 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.31 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:25:28,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.92 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. [2018-07-25 13:25:28,782 INFO L168 Benchmark]: Boogie Preprocessor took 22.46 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. [2018-07-25 13:25:28,783 INFO L168 Benchmark]: RCFGBuilder took 278.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 13:25:28,784 INFO L168 Benchmark]: TraceAbstraction took 838.48 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-25 13:25:28,789 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 0.31 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.92 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 22.46 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 278.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 838.48 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: 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: 22]: Loop Invariant Derived loop invariant: (((main_~i~5 + 1 <= 2 * main_~n~5 && main_~n~5 <= main_~k~5) && main_~i~5 <= 1) && 1 <= main_~i~5) || (((main_~i~5 <= 2 * main_~n~5 && 2 * main_~n~5 <= main_~i~5) && 0 <= main_~i~5) && main_~i~5 <= 0) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((main_~i~5 + 1 <= 2 * main_~n~5 && main_~n~5 <= main_~k~5) && main_~i~5 <= 1) && 1 <= main_~i~5) || (((main_~i~5 <= 2 * main_~n~5 && 2 * main_~n~5 <= main_~i~5) && 0 <= main_~i~5) && main_~i~5 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 8 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 74 HoareAnnotationTreeSize, 6 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 559 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/half.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-25-28-814.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/half.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-25-28-814.csv Received shutdown request...