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/20170319-ConjunctivePathPrograms/half.i_3.bplTransformedIcfg_BEv2_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-935f392 [2018-07-23 13:40:54,587 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 13:40:54,590 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 13:40:54,607 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 13:40:54,607 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 13:40:54,608 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 13:40:54,610 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 13:40:54,612 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 13:40:54,616 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 13:40:54,618 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 13:40:54,622 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 13:40:54,623 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 13:40:54,624 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 13:40:54,628 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 13:40:54,629 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 13:40:54,632 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 13:40:54,633 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 13:40:54,635 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 13:40:54,640 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 13:40:54,645 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 13:40:54,646 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 13:40:54,651 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 13:40:54,654 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 13:40:54,666 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 13:40:54,687 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 13:40:54,687 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 13:40:54,689 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 13:40:54,689 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 13:40:54,689 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 13:40:54,689 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 13:40:54,690 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 13:40:54,690 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 13:40:54,759 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 13:40:54,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 13:40:54,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 13:40:54,784 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 13:40:54,784 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 13:40:54,785 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/half.i_3.bplTransformedIcfg_BEv2_4.bpl [2018-07-23 13:40:54,785 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/half.i_3.bplTransformedIcfg_BEv2_4.bpl' [2018-07-23 13:40:54,841 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 13:40:54,842 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 13:40:54,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 13:40:54,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 13:40:54,844 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 13:40:54,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:40:54" (1/1) ... [2018-07-23 13:40:54,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:40:54" (1/1) ... [2018-07-23 13:40:54,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:40:54" (1/1) ... [2018-07-23 13:40:54,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:40:54" (1/1) ... [2018-07-23 13:40:54,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:40:54" (1/1) ... [2018-07-23 13:40:54,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:40:54" (1/1) ... [2018-07-23 13:40:54,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:40:54" (1/1) ... [2018-07-23 13:40:54,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 13:40:54,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 13:40:54,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 13:40:54,891 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 13:40:54,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:40:54" (1/1) ... [2018-07-23 13:40:54,970 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-07-23 13:40:54,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 13:40:54,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 13:40:55,111 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 13:40:55,112 INFO L202 PluginConnector]: Adding new model half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:40:55 BoogieIcfgContainer [2018-07-23 13:40:55,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 13:40:55,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 13:40:55,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 13:40:55,117 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 13:40:55,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:40:54" (1/2) ... [2018-07-23 13:40:55,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1157ffa4 and model type half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:40:55, skipping insertion in model container [2018-07-23 13:40:55,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:40:55" (2/2) ... [2018-07-23 13:40:55,122 INFO L112 eAbstractionObserver]: Analyzing ICFG half.i_3.bplTransformedIcfg_BEv2_4.bpl [2018-07-23 13:40:55,134 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 13:40:55,143 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 13:40:55,200 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 13:40:55,201 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 13:40:55,201 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 13:40:55,201 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 13:40:55,201 INFO L376 AbstractCegarLoop]: Backedges is CANONICAL [2018-07-23 13:40:55,202 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 13:40:55,202 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 13:40:55,202 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 13:40:55,202 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 13:40:55,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-23 13:40:55,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-23 13:40:55,229 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:40:55,231 INFO L357 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-23 13:40:55,231 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:40:55,237 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-07-23 13:40:55,245 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:40:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:40:55,417 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 13:40:55,420 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:40:55,421 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 13:40:55,424 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:40:55,424 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 13:40:55,425 INFO L185 omatonBuilderFactory]: Interpolants [8#true, 9#false, 10#(and (or (< ULTIMATE.start_main_~n~5 (+ ULTIMATE.start_main_~k~5 1)) (<= ULTIMATE.start_main_~n~5 0)) (or (<= ULTIMATE.start_main_~i~5 (* 2 ULTIMATE.start_main_~n~5)) (<= ULTIMATE.start_main_~k~5 ULTIMATE.start_main_~n~5)))] [2018-07-23 13:40:55,425 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 13:40:55,426 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 13:40:55,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 13:40:55,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:40:55,452 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-07-23 13:40:55,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:40:55,514 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2018-07-23 13:40:55,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 13:40:55,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-23 13:40:55,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:40:55,547 INFO L225 Difference]: With dead ends: 8 [2018-07-23 13:40:55,548 INFO L226 Difference]: Without dead ends: 5 [2018-07-23 13:40:55,557 INFO L575 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 [2018-07-23 13:40:55,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-07-23 13:40:55,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-07-23 13:40:55,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-07-23 13:40:55,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-07-23 13:40:55,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-07-23 13:40:55,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:40:55,598 INFO L471 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-07-23 13:40:55,598 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 13:40:55,598 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-07-23 13:40:55,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 13:40:55,599 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:40:55,599 INFO L357 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 13:40:55,600 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:40:55,600 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-07-23 13:40:55,600 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:40:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:40:55,662 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 13:40:55,662 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:40:55,662 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 13:40:55,663 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:40:55,663 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 13:40:55,663 INFO L185 omatonBuilderFactory]: Interpolants [37#true, 38#false, 39#(and (<= 0 ULTIMATE.start_main_~n~5) (= ULTIMATE.start_main_~i~5 0) (<= ULTIMATE.start_main_~n~5 0)), 40#(and (<= (+ ULTIMATE.start_main_~i~5 1) (* 2 ULTIMATE.start_main_~n~5)) (<= ULTIMATE.start_main_~n~5 ULTIMATE.start_main_~k~5))] [2018-07-23 13:40:55,664 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 13:40:55,666 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 13:40:55,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 13:40:55,667 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:40:55,667 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-07-23 13:40:55,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:40:55,691 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-07-23 13:40:55,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 13:40:55,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-23 13:40:55,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:40:55,693 INFO L225 Difference]: With dead ends: 8 [2018-07-23 13:40:55,693 INFO L226 Difference]: Without dead ends: 6 [2018-07-23 13:40:55,694 INFO L575 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 [2018-07-23 13:40:55,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-23 13:40:55,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-23 13:40:55,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-23 13:40:55,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-23 13:40:55,698 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-07-23 13:40:55,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:40:55,698 INFO L471 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-23 13:40:55,698 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 13:40:55,699 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-23 13:40:55,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-23 13:40:55,699 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:40:55,699 INFO L357 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-23 13:40:55,699 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:40:55,700 INFO L82 PathProgramCache]: Analyzing trace with hash 28844579, now seen corresponding path program 2 times [2018-07-23 13:40:55,700 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:40:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:40:55,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:40:55,730 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:40:55,730 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 13:40:55,731 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:40:55,731 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 13:40:55,731 INFO L185 omatonBuilderFactory]: Interpolants [69#true, 70#false, 71#(= ULTIMATE.start_main_~i~5 0), 72#(<= 1 ULTIMATE.start_main_~i~5)] [2018-07-23 13:40:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:40:55,732 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 13:40:55,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 13:40:55,732 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:40:55,733 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 4 states. [2018-07-23 13:40:55,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:40:55,753 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2018-07-23 13:40:55,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 13:40:55,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-07-23 13:40:55,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:40:55,754 INFO L225 Difference]: With dead ends: 6 [2018-07-23 13:40:55,757 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 13:40:55,758 INFO L575 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 [2018-07-23 13:40:55,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 13:40:55,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 13:40:55,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 13:40:55,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 13:40:55,762 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2018-07-23 13:40:55,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:40:55,762 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 13:40:55,763 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 13:40:55,763 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 13:40:55,763 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 13:40:55,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 13:40:55,889 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 49) the Hoare annotation is: true [2018-07-23 13:40:55,889 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 49) no Hoare annotation was computed. [2018-07-23 13:40:55,889 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 1 49) the Hoare annotation is: false [2018-07-23 13:40:55,890 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startErr0AssertViolationASSERT(line 48) the Hoare annotation is: false [2018-07-23 13:40:55,890 INFO L417 ceAbstractionStarter]: At program point L36(lines 36 47) the Hoare annotation is: false [2018-07-23 13:40:55,891 INFO L417 ceAbstractionStarter]: At program point L46(lines 24 46) the Hoare annotation is: (or (and (<= (+ ULTIMATE.start_main_~i~5 1) (* 2 ULTIMATE.start_main_~n~5)) (<= ULTIMATE.start_main_~n~5 ULTIMATE.start_main_~k~5) (<= 1 ULTIMATE.start_main_~i~5)) (and (<= 0 ULTIMATE.start_main_~n~5) (= ULTIMATE.start_main_~i~5 0) (<= ULTIMATE.start_main_~n~5 0))) [2018-07-23 13:40:55,901 INFO L202 PluginConnector]: Adding new model half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 01:40:55 BoogieIcfgContainer [2018-07-23 13:40:55,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 13:40:55,902 INFO L168 Benchmark]: Toolchain (without parser) took 1061.15 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. [2018-07-23 13:40:55,905 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 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. [2018-07-23 13:40:55,905 INFO L168 Benchmark]: Boogie Preprocessor took 46.60 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. [2018-07-23 13:40:55,906 INFO L168 Benchmark]: RCFGBuilder took 221.98 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. [2018-07-23 13:40:55,907 INFO L168 Benchmark]: TraceAbstraction took 788.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-23 13:40:55,911 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 0.22 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 46.60 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 221.98 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 788.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: 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: 24]: Loop Invariant Derived loop invariant: ((main_~i~5 + 1 <= 2 * main_~n~5 && main_~n~5 <= main_~k~5) && 1 <= main_~i~5) || ((0 <= main_~n~5 && main_~i~5 == 0) && main_~n~5 <= 0) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: false - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 7 SDtfs, 0 SDslu, 3 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=6occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 2/4 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, 7 NumberOfFragments, 29 HoareAnnotationTreeSize, 5 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 9 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, 138 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 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/half.i_3.bplTransformedIcfg_BEv2_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_13-40-55-923.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/half.i_3.bplTransformedIcfg_BEv2_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_13-40-55-923.csv Received shutdown request...