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/nested9.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:27:36,331 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:27:36,333 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:27:36,345 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:27:36,346 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:27:36,347 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:27:36,348 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:27:36,350 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:27:36,351 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:27:36,352 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:27:36,353 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:27:36,353 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:27:36,354 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:27:36,355 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:27:36,356 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:27:36,357 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:27:36,358 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:27:36,360 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:27:36,362 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:27:36,363 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:27:36,364 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:27:36,366 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:27:36,368 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:27:36,368 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:27:36,368 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:27:36,369 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:27:36,370 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:27:36,371 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:27:36,372 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:27:36,373 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:27:36,373 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:27:36,374 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 13:27:36,377 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:27:36,385 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:27:36,385 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:27:36,386 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:27:36,387 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:27:36,387 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:27:36,387 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:27:36,387 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:27:36,388 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:27:36,442 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:27:36,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:27:36,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:27:36,463 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:27:36,464 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:27:36,465 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested9.i_3.bpl [2018-07-25 13:27:36,465 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested9.i_3.bpl' [2018-07-25 13:27:36,538 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:27:36,540 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:27:36,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:27:36,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:27:36,541 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:27:36,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:27:36" (1/1) ... [2018-07-25 13:27:36,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:27:36" (1/1) ... [2018-07-25 13:27:36,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:27:36,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:27:36,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:27:36,592 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:27:36,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:27:36" (1/1) ... [2018-07-25 13:27:36,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:27:36" (1/1) ... [2018-07-25 13:27:36,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:27:36" (1/1) ... [2018-07-25 13:27:36,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:27:36" (1/1) ... [2018-07-25 13:27:36,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:27:36" (1/1) ... [2018-07-25 13:27:36,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:27:36" (1/1) ... [2018-07-25 13:27:36,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:27:36" (1/1) ... [2018-07-25 13:27:36,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:27:36,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:27:36,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:27:36,618 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:27:36,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:27:36" (1/1) ... [2018-07-25 13:27:36,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 13:27:36,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 13:27:36,883 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 13:27:36,885 INFO L202 PluginConnector]: Adding new model nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:27:36 BoogieIcfgContainer [2018-07-25 13:27:36,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:27:36,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:27:36,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:27:36,891 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:27:36,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:27:36" (1/2) ... [2018-07-25 13:27:36,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd184ab and model type nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:27:36, skipping insertion in model container [2018-07-25 13:27:36,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:27:36" (2/2) ... [2018-07-25 13:27:36,896 INFO L112 eAbstractionObserver]: Analyzing ICFG nested9.i_3.bpl [2018-07-25 13:27:36,906 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:27:36,916 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:27:36,967 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:27:36,968 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:27:36,969 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:27:36,969 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 13:27:36,969 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:27:36,970 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:27:36,970 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:27:36,970 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:27:36,970 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:27:36,988 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-07-25 13:27:37,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 13:27:37,001 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:37,002 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-25 13:27:37,003 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:37,010 INFO L82 PathProgramCache]: Analyzing trace with hash 889599113, now seen corresponding path program 1 times [2018-07-25 13:27:37,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:37,115 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 13:27:37,118 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:27:37,118 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 13:27:37,126 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:27:37,138 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:27:37,139 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:27:37,142 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 4 states. [2018-07-25 13:27:37,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:37,202 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2018-07-25 13:27:37,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:27:37,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-25 13:27:37,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:37,221 INFO L225 Difference]: With dead ends: 14 [2018-07-25 13:27:37,222 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 13:27:37,226 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:27:37,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 13:27:37,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 13:27:37,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 13:27:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-25 13:27:37,267 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-07-25 13:27:37,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:37,268 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-25 13:27:37,268 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:27:37,268 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-25 13:27:37,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 13:27:37,269 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:37,269 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 13:27:37,270 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:37,270 INFO L82 PathProgramCache]: Analyzing trace with hash 141423237, now seen corresponding path program 1 times [2018-07-25 13:27:37,270 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:37,338 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:37,339 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:27:37,342 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:27:37,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:27:37,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:27:37,343 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 7 states. [2018-07-25 13:27:37,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:37,472 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2018-07-25 13:27:37,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 13:27:37,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2018-07-25 13:27:37,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:37,473 INFO L225 Difference]: With dead ends: 15 [2018-07-25 13:27:37,474 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 13:27:37,476 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:27:37,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 13:27:37,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2018-07-25 13:27:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 13:27:37,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-25 13:27:37,489 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-07-25 13:27:37,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:37,489 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-25 13:27:37,489 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:27:37,489 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-25 13:27:37,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 13:27:37,490 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:37,492 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 13:27:37,492 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:37,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1531170369, now seen corresponding path program 1 times [2018-07-25 13:27:37,493 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:37,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:37,571 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:37,572 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:27:37,572 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:27:37,572 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:27:37,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:27:37,573 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 7 states. [2018-07-25 13:27:37,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:37,659 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2018-07-25 13:27:37,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 13:27:37,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-07-25 13:27:37,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:37,660 INFO L225 Difference]: With dead ends: 12 [2018-07-25 13:27:37,660 INFO L226 Difference]: Without dead ends: 0 [2018-07-25 13:27:37,664 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:27:37,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-25 13:27:37,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-25 13:27:37,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-25 13:27:37,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-25 13:27:37,666 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-07-25 13:27:37,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:37,666 INFO L472 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-25 13:27:37,666 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:27:37,666 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-25 13:27:37,666 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-25 13:27:37,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-25 13:27:37,842 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 1 81) the Hoare annotation is: false [2018-07-25 13:27:37,842 INFO L425 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 81) the Hoare annotation is: true [2018-07-25 13:27:37,842 INFO L422 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 81) no Hoare annotation was computed. [2018-07-25 13:27:37,843 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 80) the Hoare annotation is: false [2018-07-25 13:27:37,844 INFO L418 ceAbstractionStarter]: At program point L55(lines 41 55) the Hoare annotation is: (or (and (<= 0 ULTIMATE.start_main_~i~5) (<= ULTIMATE.start_main_~i~5 0)) (and (<= ULTIMATE.start_main_~j~5 (+ ULTIMATE.start_main_~i~5 1)) (<= ULTIMATE.start_main_~i~5 1) (<= 1 ULTIMATE.start_main_~i~5))) [2018-07-25 13:27:37,845 INFO L418 ceAbstractionStarter]: At program point L47(lines 47 56) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~j~5 (+ ULTIMATE.start_main_~i~5 1)))) (or (and .cse0 (<= (* 3 ULTIMATE.start_main_~i~5) ULTIMATE.start_main_~j~5) (<= 0 ULTIMATE.start_main_~i~5)) (and .cse0 (<= 2 ULTIMATE.start_main_~n~5) (<= ULTIMATE.start_main_~i~5 1) (<= 1 ULTIMATE.start_main_~i~5)))) [2018-07-25 13:27:37,846 INFO L418 ceAbstractionStarter]: At program point L78(lines 59 78) the Hoare annotation is: (and (<= ULTIMATE.start_main_~j~5 (+ ULTIMATE.start_main_~i~5 1)) (<= ULTIMATE.start_main_~j~5 (+ ULTIMATE.start_main_~k~5 1)) (<= 2 ULTIMATE.start_main_~n~5) (<= ULTIMATE.start_main_~i~5 1) (<= 1 ULTIMATE.start_main_~i~5)) [2018-07-25 13:27:37,846 INFO L418 ceAbstractionStarter]: At program point L72(lines 72 79) the Hoare annotation is: false [2018-07-25 13:27:37,847 INFO L418 ceAbstractionStarter]: At program point L66(lines 66 73) the Hoare annotation is: (and (<= ULTIMATE.start_main_~j~5 (+ ULTIMATE.start_main_~i~5 1)) (<= (+ ULTIMATE.start_main_~k~5 4) (+ (* 2 ULTIMATE.start_main_~n~5) ULTIMATE.start_main_~i~5)) (= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= ULTIMATE.start_main_~j~5 (+ ULTIMATE.start_main_~k~5 1)) (<= 2 ULTIMATE.start_main_~n~5) (<= ULTIMATE.start_main_~i~5 1) (<= 1 ULTIMATE.start_main_~i~5)) [2018-07-25 13:27:37,861 INFO L202 PluginConnector]: Adding new model nested9.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:27:37 BoogieIcfgContainer [2018-07-25 13:27:37,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:27:37,862 INFO L168 Benchmark]: Toolchain (without parser) took 1323.38 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-07-25 13:27:37,868 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:27:37,869 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.26 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 13:27:37,869 INFO L168 Benchmark]: Boogie Preprocessor took 25.73 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 13:27:37,870 INFO L168 Benchmark]: RCFGBuilder took 267.80 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 13:27:37,871 INFO L168 Benchmark]: TraceAbstraction took 974.65 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 13:27:37,875 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.26 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 25.73 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 267.80 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 974.65 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: 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: 47]: Loop Invariant Derived loop invariant: ((main_~j~5 <= main_~i~5 + 1 && 3 * main_~i~5 <= main_~j~5) && 0 <= main_~i~5) || (((main_~j~5 <= main_~i~5 + 1 && 2 <= main_~n~5) && main_~i~5 <= 1) && 1 <= main_~i~5) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (0 <= main_~i~5 && main_~i~5 <= 0) || ((main_~j~5 <= main_~i~5 + 1 && main_~i~5 <= 1) && 1 <= main_~i~5) - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: (((((main_~j~5 <= main_~i~5 + 1 && main_~k~5 + 4 <= 2 * main_~n~5 + main_~i~5) && __VERIFIER_assert_~cond == 1) && main_~j~5 <= main_~k~5 + 1) && 2 <= main_~n~5) && main_~i~5 <= 1) && 1 <= main_~i~5 - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((main_~j~5 <= main_~i~5 + 1 && main_~j~5 <= main_~k~5 + 1) && 2 <= main_~n~5) && main_~i~5 <= 1) && 1 <= main_~i~5 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 10 SDtfs, 26 SDslu, 10 SDs, 0 SdLazy, 60 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 13 NumberOfFragments, 106 HoareAnnotationTreeSize, 8 FomulaSimplifications, 19 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 31 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 491 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 3/6 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/nested9.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-27-37-895.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested9.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-27-37-895.csv Received shutdown request...