java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/INT_add_vs_inc.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-935f392 [2018-07-23 13:51:32,503 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 13:51:32,506 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 13:51:32,521 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 13:51:32,521 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 13:51:32,522 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 13:51:32,523 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 13:51:32,526 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 13:51:32,528 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 13:51:32,528 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 13:51:32,529 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 13:51:32,530 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 13:51:32,531 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 13:51:32,532 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 13:51:32,533 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 13:51:32,534 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 13:51:32,534 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 13:51:32,536 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 13:51:32,538 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 13:51:32,540 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 13:51:32,541 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 13:51:32,542 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 13:51:32,545 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 13:51:32,545 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 13:51:32,546 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 13:51:32,547 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 13:51:32,548 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 13:51:32,548 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 13:51:32,549 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 13:51:32,551 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 13:51:32,551 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 13:51:32,552 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-23 13:51:32,554 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf [2018-07-23 13:51:32,568 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 13:51:32,569 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 13:51:32,570 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 13:51:32,570 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 13:51:32,571 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 13:51:32,571 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 13:51:32,571 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 13:51:32,571 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 13:51:32,641 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 13:51:32,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 13:51:32,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 13:51:32,664 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 13:51:32,665 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 13:51:32,666 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/INT_add_vs_inc.bpl [2018-07-23 13:51:32,666 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/INT_add_vs_inc.bpl' [2018-07-23 13:51:32,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 13:51:32,727 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 13:51:32,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 13:51:32,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 13:51:32,728 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 13:51:32,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:51:32" (1/1) ... [2018-07-23 13:51:32,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:51:32" (1/1) ... [2018-07-23 13:51:32,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:51:32" (1/1) ... [2018-07-23 13:51:32,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:51:32" (1/1) ... [2018-07-23 13:51:32,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:51:32" (1/1) ... [2018-07-23 13:51:32,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:51:32" (1/1) ... [2018-07-23 13:51:32,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:51:32" (1/1) ... [2018-07-23 13:51:32,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 13:51:32,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 13:51:32,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 13:51:32,779 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 13:51:32,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:51:32" (1/1) ... [2018-07-23 13:51:32,874 INFO L124 BoogieDeclarations]: Specification and implementation of procedure add given in one single declaration [2018-07-23 13:51:32,875 INFO L130 BoogieDeclarations]: Found specification of procedure add [2018-07-23 13:51:32,875 INFO L138 BoogieDeclarations]: Found implementation of procedure add [2018-07-23 13:51:33,026 INFO L258 CfgBuilder]: Using library mode [2018-07-23 13:51:33,027 INFO L202 PluginConnector]: Adding new model INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:51:33 BoogieIcfgContainer [2018-07-23 13:51:33,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 13:51:33,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 13:51:33,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 13:51:33,034 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 13:51:33,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:51:32" (1/2) ... [2018-07-23 13:51:33,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58cdaeb2 and model type INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:51:33, skipping insertion in model container [2018-07-23 13:51:33,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:51:33" (2/2) ... [2018-07-23 13:51:33,038 INFO L112 eAbstractionObserver]: Analyzing ICFG INT_add_vs_inc.bpl [2018-07-23 13:51:33,049 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 13:51:33,061 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 13:51:33,118 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 13:51:33,119 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 13:51:33,119 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 13:51:33,119 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 13:51:33,120 INFO L376 AbstractCegarLoop]: Backedges is CANONICAL [2018-07-23 13:51:33,120 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 13:51:33,120 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 13:51:33,120 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 13:51:33,121 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 13:51:33,139 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-23 13:51:33,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-23 13:51:33,152 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:51:33,153 INFO L357 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-23 13:51:33,155 INFO L414 AbstractCegarLoop]: === Iteration 1 === [addErr0AssertViolationASSERT]=== [2018-07-23 13:51:33,161 INFO L82 PathProgramCache]: Analyzing trace with hash 29984, now seen corresponding path program 1 times [2018-07-23 13:51:33,168 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:51:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:51:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:51:33,336 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:51:33,336 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 13:51:33,338 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:51:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:51:33,339 INFO L185 omatonBuilderFactory]: Interpolants [8#true, 9#false, 10#(and (or (= add_result add_x) (not (= add_y0 0))) (< 0 (+ add_y0 1)) (= add_y add_y0)), 11#(and (= add_result add_x) (= add_y0 0))] [2018-07-23 13:51:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:51:33,340 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 13:51:33,355 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 13:51:33,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:51:33,360 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 4 states. [2018-07-23 13:51:33,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:51:33,433 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-23 13:51:33,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 13:51:33,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2018-07-23 13:51:33,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:51:33,445 INFO L225 Difference]: With dead ends: 9 [2018-07-23 13:51:33,445 INFO L226 Difference]: Without dead ends: 5 [2018-07-23 13:51:33,451 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-23 13:51:33,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-07-23 13:51:33,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-07-23 13:51:33,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-07-23 13:51:33,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-07-23 13:51:33,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-07-23 13:51:33,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:51:33,492 INFO L471 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-07-23 13:51:33,492 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 13:51:33,492 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-07-23 13:51:33,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 13:51:33,493 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:51:33,493 INFO L357 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 13:51:33,493 INFO L414 AbstractCegarLoop]: === Iteration 2 === [addErr0AssertViolationASSERT]=== [2018-07-23 13:51:33,494 INFO L82 PathProgramCache]: Analyzing trace with hash 927558, now seen corresponding path program 1 times [2018-07-23 13:51:33,494 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:51:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:51:33,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:51:33,581 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:51:33,582 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 13:51:33,582 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:51:33,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:51:33,583 INFO L185 omatonBuilderFactory]: Interpolants [42#true, 43#false, 44#(and (= add_result add_x) (= add_y add_y0)), 45#(and (<= add_result (+ add_x add_y0)) (or (< (+ add_x add_y0) (+ add_result 1)) (<= (+ add_x add_y0) (+ add_y add_result)))), 46#(and (<= add_result (+ add_x add_y0)) (<= (+ add_x add_y0) add_result))] [2018-07-23 13:51:33,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:51:33,586 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 13:51:33,586 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 13:51:33,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-23 13:51:33,587 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 5 states. [2018-07-23 13:51:33,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:51:33,681 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-07-23 13:51:33,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 13:51:33,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-07-23 13:51:33,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:51:33,683 INFO L225 Difference]: With dead ends: 8 [2018-07-23 13:51:33,683 INFO L226 Difference]: Without dead ends: 6 [2018-07-23 13:51:33,684 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 13:51:33,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-23 13:51:33,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-23 13:51:33,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-23 13:51:33,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-23 13:51:33,687 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-07-23 13:51:33,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:51:33,688 INFO L471 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-23 13:51:33,688 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 13:51:33,688 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-23 13:51:33,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-23 13:51:33,688 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:51:33,688 INFO L357 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-23 13:51:33,689 INFO L414 AbstractCegarLoop]: === Iteration 3 === [addErr0AssertViolationASSERT]=== [2018-07-23 13:51:33,689 INFO L82 PathProgramCache]: Analyzing trace with hash 28752352, now seen corresponding path program 2 times [2018-07-23 13:51:33,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:51:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:51:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:51:33,750 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:51:33,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-23 13:51:33,751 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:51:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:51:33,752 INFO L185 omatonBuilderFactory]: Interpolants [80#(and (<= (+ add_y add_result) (+ add_x add_y0)) (<= (+ add_x add_y0) (+ add_y add_result))), 81#(and (<= add_result (+ add_x add_y0)) (or (< (+ add_x add_y0) (+ add_result 1)) (<= (+ add_x add_y0) (+ add_y add_result)))), 82#(and (<= add_result (+ add_x add_y0)) (<= (+ add_x add_y0) add_result)), 77#true, 78#false, 79#(and (= add_result add_x) (= add_y add_y0))] [2018-07-23 13:51:33,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:51:33,752 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 13:51:33,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 13:51:33,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-23 13:51:33,753 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2018-07-23 13:51:33,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:51:33,843 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2018-07-23 13:51:33,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 13:51:33,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-07-23 13:51:33,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:51:33,844 INFO L225 Difference]: With dead ends: 6 [2018-07-23 13:51:33,844 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 13:51:33,845 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 13:51:33,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 13:51:33,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 13:51:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 13:51:33,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 13:51:33,848 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2018-07-23 13:51:33,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:51:33,849 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 13:51:33,849 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 13:51:33,849 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 13:51:33,849 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 13:51:33,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 13:51:33,917 INFO L417 ceAbstractionStarter]: At program point addErr0AssertViolationASSERT(line 23) the Hoare annotation is: false [2018-07-23 13:51:33,918 INFO L417 ceAbstractionStarter]: At program point L17(lines 17 21) the Hoare annotation is: (let ((.cse0 (+ add_x add_y0)) (.cse1 (+ add_y add_result))) (and (<= add_result .cse0) (<= .cse1 .cse0) (<= .cse0 .cse1))) [2018-07-23 13:51:33,920 INFO L424 ceAbstractionStarter]: At program point addENTRY(lines 8 24) the Hoare annotation is: true [2018-07-23 13:51:33,920 INFO L421 ceAbstractionStarter]: For program point addFINAL(lines 8 24) no Hoare annotation was computed. [2018-07-23 13:51:33,920 INFO L417 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (+ add_x add_y0))) (and (<= add_result .cse0) (<= .cse0 add_result))) [2018-07-23 13:51:33,921 INFO L424 ceAbstractionStarter]: At program point addEXIT(lines 8 24) the Hoare annotation is: true [2018-07-23 13:51:33,936 INFO L202 PluginConnector]: Adding new model INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 01:51:33 BoogieIcfgContainer [2018-07-23 13:51:33,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 13:51:33,937 INFO L168 Benchmark]: Toolchain (without parser) took 1211.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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. [2018-07-23 13:51:33,939 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 13:51:33,940 INFO L168 Benchmark]: Boogie Preprocessor took 50.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 13:51:33,941 INFO L168 Benchmark]: RCFGBuilder took 249.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 13:51:33,942 INFO L168 Benchmark]: TraceAbstraction took 907.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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. [2018-07-23 13:51:33,946 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 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 249.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 907.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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: 23]: 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: 17]: Loop Invariant Derived loop invariant: (result <= x + y0 && y + result <= x + y0) && x + y0 <= y + result - ProcedureContractResult [Line: 8]: Procedure Contract for add Derived contract for procedure add: true - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5 SDtfs, 6 SDslu, 1 SDs, 0 SdLazy, 27 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/4 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, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 34 HoareAnnotationTreeSize, 5 FomulaSimplifications, 68 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 29 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 381 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 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/INT_add_vs_inc.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_13-51-33-959.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/INT_add_vs_inc.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_13-51-33-959.csv Received shutdown request...