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/nested9.i_3.bplTransformedIcfg_BEv2_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-935f392 [2018-07-23 13:41:16,130 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 13:41:16,132 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 13:41:16,146 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 13:41:16,147 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 13:41:16,148 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 13:41:16,149 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 13:41:16,152 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 13:41:16,155 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 13:41:16,156 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 13:41:16,157 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 13:41:16,158 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 13:41:16,166 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 13:41:16,167 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 13:41:16,170 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 13:41:16,171 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 13:41:16,175 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 13:41:16,177 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 13:41:16,182 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 13:41:16,184 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 13:41:16,186 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 13:41:16,187 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 13:41:16,189 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 13:41:16,197 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 13:41:16,212 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 13:41:16,212 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 13:41:16,213 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 13:41:16,214 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 13:41:16,214 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 13:41:16,214 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 13:41:16,214 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 13:41:16,215 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 13:41:16,266 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 13:41:16,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 13:41:16,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 13:41:16,285 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 13:41:16,286 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 13:41:16,287 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/nested9.i_3.bplTransformedIcfg_BEv2_4.bpl [2018-07-23 13:41:16,287 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/nested9.i_3.bplTransformedIcfg_BEv2_4.bpl' [2018-07-23 13:41:16,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 13:41:16,365 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 13:41:16,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 13:41:16,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 13:41:16,366 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 13:41:16,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested9.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:41:16" (1/1) ... [2018-07-23 13:41:16,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested9.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:41:16" (1/1) ... [2018-07-23 13:41:16,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested9.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:41:16" (1/1) ... [2018-07-23 13:41:16,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested9.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:41:16" (1/1) ... [2018-07-23 13:41:16,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested9.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:41:16" (1/1) ... [2018-07-23 13:41:16,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested9.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:41:16" (1/1) ... [2018-07-23 13:41:16,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested9.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:41:16" (1/1) ... [2018-07-23 13:41:16,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 13:41:16,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 13:41:16,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 13:41:16,423 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 13:41:16,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested9.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:41:16" (1/1) ... [2018-07-23 13:41:16,511 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-07-23 13:41:16,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 13:41:16,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 13:41:16,681 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 13:41:16,682 INFO L202 PluginConnector]: Adding new model nested9.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:41:16 BoogieIcfgContainer [2018-07-23 13:41:16,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 13:41:16,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 13:41:16,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 13:41:16,688 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 13:41:16,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested9.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:41:16" (1/2) ... [2018-07-23 13:41:16,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd27227 and model type nested9.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:41:16, skipping insertion in model container [2018-07-23 13:41:16,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested9.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:41:16" (2/2) ... [2018-07-23 13:41:16,693 INFO L112 eAbstractionObserver]: Analyzing ICFG nested9.i_3.bplTransformedIcfg_BEv2_4.bpl [2018-07-23 13:41:16,703 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 13:41:16,713 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 13:41:16,762 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 13:41:16,763 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 13:41:16,763 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 13:41:16,764 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 13:41:16,764 INFO L376 AbstractCegarLoop]: Backedges is CANONICAL [2018-07-23 13:41:16,764 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 13:41:16,764 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 13:41:16,765 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 13:41:16,765 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 13:41:16,780 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-07-23 13:41:16,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 13:41:16,790 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:41:16,791 INFO L357 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 13:41:16,791 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:41:16,797 INFO L82 PathProgramCache]: Analyzing trace with hash 889560929, now seen corresponding path program 1 times [2018-07-23 13:41:16,804 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:41:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:41:16,895 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 13:41:16,898 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:41:16,899 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 13:41:16,901 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:41:16,902 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 13:41:16,902 INFO L185 omatonBuilderFactory]: Interpolants [11#true, 12#false, 13#(<= ULTIMATE.start_main_~i~5 0), 14#(<= (* 3 ULTIMATE.start_main_~i~5) ULTIMATE.start_main_~j~5)] [2018-07-23 13:41:16,902 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 13:41:16,904 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 13:41:16,920 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 13:41:16,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:41:16,924 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 4 states. [2018-07-23 13:41:17,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:41:17,009 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2018-07-23 13:41:17,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 13:41:17,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-23 13:41:17,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:41:17,032 INFO L225 Difference]: With dead ends: 14 [2018-07-23 13:41:17,032 INFO L226 Difference]: Without dead ends: 9 [2018-07-23 13:41:17,036 INFO L575 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 [2018-07-23 13:41:17,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-23 13:41:17,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-23 13:41:17,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-23 13:41:17,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-23 13:41:17,076 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-07-23 13:41:17,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:41:17,077 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-23 13:41:17,077 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 13:41:17,077 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-23 13:41:17,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 13:41:17,078 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:41:17,078 INFO L357 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-23 13:41:17,079 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:41:17,079 INFO L82 PathProgramCache]: Analyzing trace with hash 198643355, now seen corresponding path program 1 times [2018-07-23 13:41:17,079 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:41:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:41:17,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:41:17,154 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:41:17,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 13:41:17,155 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:41:17,155 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 13:41:17,155 INFO L185 omatonBuilderFactory]: Interpolants [64#false, 65#(<= 0 ULTIMATE.start_main_~i~5), 66#(<= 1 ULTIMATE.start_main_~i~5), 67#(<= 2 ULTIMATE.start_main_~n~5), 68#(<= (+ ULTIMATE.start_main_~k~5 4) (+ (* 2 ULTIMATE.start_main_~n~5) ULTIMATE.start_main_~i~5)), 69#(<= 1 ULTIMATE.start___VERIFIER_assert_~cond), 63#true] [2018-07-23 13:41:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:41:17,162 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 13:41:17,162 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 13:41:17,163 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-23 13:41:17,163 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 7 states. [2018-07-23 13:41:17,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:41:17,295 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2018-07-23 13:41:17,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 13:41:17,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2018-07-23 13:41:17,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:41:17,296 INFO L225 Difference]: With dead ends: 15 [2018-07-23 13:41:17,296 INFO L226 Difference]: Without dead ends: 13 [2018-07-23 13:41:17,298 INFO L575 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 [2018-07-23 13:41:17,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-23 13:41:17,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2018-07-23 13:41:17,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-23 13:41:17,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-23 13:41:17,311 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-07-23 13:41:17,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:41:17,311 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-23 13:41:17,312 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 13:41:17,312 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-23 13:41:17,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-23 13:41:17,315 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:41:17,316 INFO L357 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-07-23 13:41:17,316 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:41:17,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1917769187, now seen corresponding path program 1 times [2018-07-23 13:41:17,316 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:41:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:41:17,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:41:17,387 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:41:17,387 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 13:41:17,388 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:41:17,388 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 13:41:17,389 INFO L185 omatonBuilderFactory]: Interpolants [130#true, 131#false, 132#(<= ULTIMATE.start_main_~i~5 0), 133#(<= ULTIMATE.start_main_~i~5 1), 134#(<= ULTIMATE.start_main_~j~5 (+ ULTIMATE.start_main_~i~5 1)), 135#(<= ULTIMATE.start_main_~j~5 (+ ULTIMATE.start_main_~k~5 1)), 136#(<= ULTIMATE.start_main_~j~5 ULTIMATE.start_main_~k~5)] [2018-07-23 13:41:17,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:41:17,390 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 13:41:17,390 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 13:41:17,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-23 13:41:17,391 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 7 states. [2018-07-23 13:41:17,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:41:17,459 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2018-07-23 13:41:17,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 13:41:17,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-07-23 13:41:17,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:41:17,460 INFO L225 Difference]: With dead ends: 12 [2018-07-23 13:41:17,460 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 13:41:17,461 INFO L575 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 [2018-07-23 13:41:17,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 13:41:17,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 13:41:17,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 13:41:17,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 13:41:17,462 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-07-23 13:41:17,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:41:17,462 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 13:41:17,462 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 13:41:17,463 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 13:41:17,463 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 13:41:17,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 13:41:17,622 INFO L417 ceAbstractionStarter]: At program point L81(lines 81 88) the Hoare annotation is: false [2018-07-23 13:41:17,622 INFO L421 ceAbstractionStarter]: For program point L62(lines 62 69) no Hoare annotation was computed. [2018-07-23 13:41:17,625 INFO L417 ceAbstractionStarter]: At program point L87(lines 53 87) 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)) [2018-07-23 13:41:17,627 INFO L417 ceAbstractionStarter]: At program point L47(lines 47 54) 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)))) [2018-07-23 13:41:17,627 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 90) the Hoare annotation is: true [2018-07-23 13:41:17,628 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 1 90) the Hoare annotation is: false [2018-07-23 13:41:17,628 INFO L421 ceAbstractionStarter]: For program point L72(lines 68 73) no Hoare annotation was computed. [2018-07-23 13:41:17,629 INFO L417 ceAbstractionStarter]: At program point L76(lines 76 82) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 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_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)) [2018-07-23 13:41:17,629 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startErr0AssertViolationASSERT(line 89) the Hoare annotation is: false [2018-07-23 13:41:17,631 INFO L417 ceAbstractionStarter]: At program point L59(lines 43 59) 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))) [2018-07-23 13:41:17,632 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 90) no Hoare annotation was computed. [2018-07-23 13:41:17,651 INFO L202 PluginConnector]: Adding new model nested9.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 01:41:17 BoogieIcfgContainer [2018-07-23 13:41:17,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 13:41:17,653 INFO L168 Benchmark]: Toolchain (without parser) took 1288.98 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. [2018-07-23 13:41:17,655 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 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 13:41:17,656 INFO L168 Benchmark]: Boogie Preprocessor took 56.26 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. [2018-07-23 13:41:17,658 INFO L168 Benchmark]: RCFGBuilder took 260.20 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 13:41:17,660 INFO L168 Benchmark]: TraceAbstraction took 967.54 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. [2018-07-23 13:41:17,666 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.26 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. * RCFGBuilder took 260.20 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 967.54 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: 89]: 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: 53]: 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 - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: (((((1 <= __VERIFIER_assert_~cond && main_~j~5 <= main_~i~5 + 1) && main_~k~5 + 4 <= 2 * main_~n~5 + main_~i~5) && main_~j~5 <= main_~k~5 + 1) && 2 <= main_~n~5) && main_~i~5 <= 1) && 1 <= main_~i~5 - InvariantResult [Line: 81]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 43]: 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) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 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, 17 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, 3/6 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.bplTransformedIcfg_BEv2_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_13-41-17-688.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested9.i_3.bplTransformedIcfg_BEv2_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_13-41-17-688.csv Received shutdown request...