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/HierarchicalTraceAbstraction/GeometricalIntegerCake.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-56c9370 [2018-07-23 15:34:35,794 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 15:34:35,796 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 15:34:35,813 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 15:34:35,814 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 15:34:35,815 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 15:34:35,818 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 15:34:35,821 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 15:34:35,824 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 15:34:35,825 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 15:34:35,834 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-07-23 15:34:35,879 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 15:34:35,906 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 15:34:35,906 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 15:34:35,908 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 15:34:35,908 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 15:34:35,909 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 15:34:35,909 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 15:34:35,909 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 15:34:35,909 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 15:34:35,957 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 15:34:35,971 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 15:34:35,978 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 15:34:35,980 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 15:34:35,981 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 15:34:35,982 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/GeometricalIntegerCake.bpl [2018-07-23 15:34:35,982 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/GeometricalIntegerCake.bpl' [2018-07-23 15:34:36,040 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 15:34:36,045 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 15:34:36,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 15:34:36,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 15:34:36,046 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 15:34:36,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:36" (1/1) ... [2018-07-23 15:34:36,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:36" (1/1) ... [2018-07-23 15:34:36,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:36" (1/1) ... [2018-07-23 15:34:36,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:36" (1/1) ... [2018-07-23 15:34:36,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:36" (1/1) ... [2018-07-23 15:34:36,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:36" (1/1) ... [2018-07-23 15:34:36,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:36" (1/1) ... [2018-07-23 15:34:36,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 15:34:36,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 15:34:36,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 15:34:36,100 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 15:34:36,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:36" (1/1) ... [2018-07-23 15:34:36,181 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-07-23 15:34:36,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 15:34:36,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 15:34:36,313 INFO L258 CfgBuilder]: Using library mode [2018-07-23 15:34:36,314 INFO L202 PluginConnector]: Adding new model GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:34:36 BoogieIcfgContainer [2018-07-23 15:34:36,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 15:34:36,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 15:34:36,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 15:34:36,319 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 15:34:36,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:36" (1/2) ... [2018-07-23 15:34:36,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255b3ea7 and model type GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 03:34:36, skipping insertion in model container [2018-07-23 15:34:36,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:34:36" (2/2) ... [2018-07-23 15:34:36,323 INFO L112 eAbstractionObserver]: Analyzing ICFG GeometricalIntegerCake.bpl [2018-07-23 15:34:36,333 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 15:34:36,343 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-07-23 15:34:36,387 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 15:34:36,387 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 15:34:36,387 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 15:34:36,388 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 15:34:36,388 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 15:34:36,388 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 15:34:36,388 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 15:34:36,388 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 15:34:36,388 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 15:34:36,400 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-23 15:34:36,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-07-23 15:34:36,408 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:36,409 INFO L353 BasicCegarLoop]: trace histogram [1, 1] [2018-07-23 15:34:36,410 INFO L414 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolationINVARIANTandASSERT, mainErr1AssertViolationASSERT]=== [2018-07-23 15:34:36,415 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-07-23 15:34:36,422 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:36,513 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 15:34:36,516 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:34:36,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-07-23 15:34:36,520 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 15:34:36,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 15:34:36,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 15:34:36,536 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-23 15:34:36,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:36,592 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-23 15:34:36,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 15:34:36,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-07-23 15:34:36,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:36,606 INFO L225 Difference]: With dead ends: 11 [2018-07-23 15:34:36,606 INFO L226 Difference]: Without dead ends: 8 [2018-07-23 15:34:36,612 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 15:34:36,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-23 15:34:36,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 6. [2018-07-23 15:34:36,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-23 15:34:36,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-23 15:34:36,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 2 [2018-07-23 15:34:36,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:36,648 INFO L471 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-23 15:34:36,648 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 15:34:36,648 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-23 15:34:36,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-23 15:34:36,649 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:36,649 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-23 15:34:36,649 INFO L414 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolationINVARIANTandASSERT, mainErr1AssertViolationASSERT]=== [2018-07-23 15:34:36,650 INFO L82 PathProgramCache]: Analyzing trace with hash 29892, now seen corresponding path program 1 times [2018-07-23 15:34:36,650 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:36,666 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 15:34:36,666 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:34:36,667 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-07-23 15:34:36,669 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 15:34:36,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 15:34:36,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 15:34:36,670 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 3 states. [2018-07-23 15:34:36,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:36,686 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-07-23 15:34:36,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 15:34:36,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-23 15:34:36,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:36,687 INFO L225 Difference]: With dead ends: 8 [2018-07-23 15:34:36,687 INFO L226 Difference]: Without dead ends: 7 [2018-07-23 15:34:36,688 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 15:34:36,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-23 15:34:36,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-23 15:34:36,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-23 15:34:36,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-23 15:34:36,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 3 [2018-07-23 15:34:36,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:36,692 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-23 15:34:36,692 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 15:34:36,693 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-23 15:34:36,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 15:34:36,693 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:36,693 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 15:34:36,694 INFO L414 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolationINVARIANTandASSERT, mainErr1AssertViolationASSERT]=== [2018-07-23 15:34:36,694 INFO L82 PathProgramCache]: Analyzing trace with hash 926592, now seen corresponding path program 1 times [2018-07-23 15:34:36,694 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:36,750 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 15:34:36,753 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:36,754 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 15:34:36,754 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 15:34:36,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 15:34:36,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:34:36,755 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-07-23 15:34:36,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:36,787 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-23 15:34:36,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 15:34:36,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-07-23 15:34:36,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:36,788 INFO L225 Difference]: With dead ends: 9 [2018-07-23 15:34:36,788 INFO L226 Difference]: Without dead ends: 8 [2018-07-23 15:34:36,789 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:34:36,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-23 15:34:36,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-23 15:34:36,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-23 15:34:36,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-23 15:34:36,793 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2018-07-23 15:34:36,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:36,793 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-23 15:34:36,793 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 15:34:36,793 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-23 15:34:36,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-23 15:34:36,794 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:36,794 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-23 15:34:36,794 INFO L414 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolationINVARIANTandASSERT, mainErr1AssertViolationASSERT]=== [2018-07-23 15:34:36,795 INFO L82 PathProgramCache]: Analyzing trace with hash 28724391, now seen corresponding path program 1 times [2018-07-23 15:34:36,795 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:36,888 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:36,888 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 15:34:36,888 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 15:34:36,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 15:34:36,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:34:36,892 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2018-07-23 15:34:36,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:36,990 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-07-23 15:34:36,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 15:34:36,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-07-23 15:34:36,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:36,992 INFO L225 Difference]: With dead ends: 8 [2018-07-23 15:34:36,992 INFO L226 Difference]: Without dead ends: 7 [2018-07-23 15:34:36,993 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:34:36,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-23 15:34:37,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-23 15:34:37,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-23 15:34:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-23 15:34:37,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-07-23 15:34:37,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:37,005 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-23 15:34:37,005 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 15:34:37,006 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-23 15:34:37,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:34:37,006 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:37,006 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1] [2018-07-23 15:34:37,007 INFO L414 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolationINVARIANTandASSERT, mainErr1AssertViolationASSERT]=== [2018-07-23 15:34:37,007 INFO L82 PathProgramCache]: Analyzing trace with hash 890456061, now seen corresponding path program 2 times [2018-07-23 15:34:37,007 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:37,140 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:37,140 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 15:34:37,141 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:34:37,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:34:37,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:34:37,144 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 7 states. [2018-07-23 15:34:37,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:37,176 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2018-07-23 15:34:37,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 15:34:37,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-23 15:34:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:37,177 INFO L225 Difference]: With dead ends: 7 [2018-07-23 15:34:37,177 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 15:34:37,178 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:34:37,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 15:34:37,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 15:34:37,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 15:34:37,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 15:34:37,179 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-07-23 15:34:37,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:37,180 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 15:34:37,180 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:34:37,180 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 15:34:37,180 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 15:34:37,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 15:34:37,255 INFO L424 ceAbstractionStarter]: At program point mainENTRY(lines 20 38) the Hoare annotation is: true [2018-07-23 15:34:37,256 INFO L417 ceAbstractionStarter]: At program point L29(lines 29 34) the Hoare annotation is: (and (<= (+ (div main_init 2) main_eat) main_cakeLeft) (<= 0 main_eat)) [2018-07-23 15:34:37,256 INFO L417 ceAbstractionStarter]: At program point mainErr0AssertViolationINVARIANTandASSERT(line 30) the Hoare annotation is: false [2018-07-23 15:34:37,258 INFO L417 ceAbstractionStarter]: At program point L29'(lines 29 34) the Hoare annotation is: (and (<= (+ (div main_init 2) main_eat) main_cakeLeft) (<= 0 main_eat)) [2018-07-23 15:34:37,258 INFO L421 ceAbstractionStarter]: For program point mainFINAL(lines 20 38) no Hoare annotation was computed. [2018-07-23 15:34:37,258 INFO L417 ceAbstractionStarter]: At program point mainErr1AssertViolationASSERT(line 36) the Hoare annotation is: false [2018-07-23 15:34:37,259 INFO L424 ceAbstractionStarter]: At program point mainEXIT(lines 20 38) the Hoare annotation is: true [2018-07-23 15:34:37,273 INFO L202 PluginConnector]: Adding new model GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 03:34:37 BoogieIcfgContainer [2018-07-23 15:34:37,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 15:34:37,275 INFO L168 Benchmark]: Toolchain (without parser) took 1234.15 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-07-23 15:34:37,278 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 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 15:34:37,280 INFO L168 Benchmark]: Boogie Preprocessor took 53.55 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 15:34:37,281 INFO L168 Benchmark]: RCFGBuilder took 215.16 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 15:34:37,282 INFO L168 Benchmark]: TraceAbstraction took 957.59 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 15:34:37,288 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 0.23 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 53.55 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 215.16 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 957.59 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: loop invariant is valid and assertion always holds For all program executions holds that loop invariant is valid and assertion always holds at this location - PositiveResult [Line: 36]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: init / 2 + eat <= cakeLeft && 0 <= eat - ProcedureContractResult [Line: 20]: Procedure Contract for main Derived contract for procedure main: true - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 2 error locations. SAFE Result, 0.8s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 14 SDslu, 0 SDs, 0 SdLazy, 36 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 26 HoareAnnotationTreeSize, 6 FomulaSimplifications, 23 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 69 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 561 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/7 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/GeometricalIntegerCake.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_15-34-37-308.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/GeometricalIntegerCake.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_15-34-37-308.csv Received shutdown request...