java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/GeometricalIntegerCake.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:56:19,235 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:56:19,237 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:56:19,249 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:56:19,250 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:56:19,251 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:56:19,252 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:56:19,254 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:56:19,256 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:56:19,256 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:56:19,257 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:56:19,258 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:56:19,259 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:56:19,260 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:56:19,261 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:56:19,262 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:56:19,263 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:56:19,265 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:56:19,267 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:56:19,268 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:56:19,270 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:56:19,273 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:56:19,279 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-25 08:56:19,298 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:56:19,322 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:56:19,323 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:56:19,324 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:56:19,324 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:56:19,325 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:56:19,325 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:56:19,325 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:56:19,325 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:56:19,370 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:56:19,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:56:19,387 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:56:19,389 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:56:19,389 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:56:19,390 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/GeometricalIntegerCake.bpl [2018-07-25 08:56:19,391 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/GeometricalIntegerCake.bpl' [2018-07-25 08:56:19,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:56:19,442 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:56:19,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:56:19,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:56:19,444 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:56:19,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:19" (1/1) ... [2018-07-25 08:56:19,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:19" (1/1) ... [2018-07-25 08:56:19,483 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 08:56:19,484 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 08:56:19,484 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 08:56:19,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:56:19,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:56:19,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:56:19,488 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:56:19,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:19" (1/1) ... [2018-07-25 08:56:19,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:19" (1/1) ... [2018-07-25 08:56:19,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:19" (1/1) ... [2018-07-25 08:56:19,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:19" (1/1) ... [2018-07-25 08:56:19,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:19" (1/1) ... [2018-07-25 08:56:19,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:19" (1/1) ... [2018-07-25 08:56:19,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:19" (1/1) ... [2018-07-25 08:56:19,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:56:19,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:56:19,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:56:19,511 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:56:19,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:19" (1/1) ... [2018-07-25 08:56:19,603 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-07-25 08:56:19,603 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-25 08:56:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-25 08:56:19,780 INFO L270 CfgBuilder]: Using library mode [2018-07-25 08:56:19,781 INFO L202 PluginConnector]: Adding new model GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:56:19 BoogieIcfgContainer [2018-07-25 08:56:19,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:56:19,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:56:19,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:56:19,787 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:56:19,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:19" (1/2) ... [2018-07-25 08:56:19,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38fec50b and model type GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:56:19, skipping insertion in model container [2018-07-25 08:56:19,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:56:19" (2/2) ... [2018-07-25 08:56:19,792 INFO L112 eAbstractionObserver]: Analyzing ICFG GeometricalIntegerCake.bpl [2018-07-25 08:56:19,805 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:56:19,817 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-07-25 08:56:19,872 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:56:19,873 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:56:19,873 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:56:19,873 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:56:19,874 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:56:19,874 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:56:19,874 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:56:19,874 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:56:19,874 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:56:19,889 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 08:56:19,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-07-25 08:56:19,898 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:19,899 INFO L354 BasicCegarLoop]: trace histogram [1, 1] [2018-07-25 08:56:19,901 INFO L415 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2018-07-25 08:56:19,908 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-07-25 08:56:19,915 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:20,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:20,013 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:56:20,014 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-07-25 08:56:20,018 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:56:20,032 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:56:20,033 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:56:20,036 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-25 08:56:20,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:20,090 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:56:20,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:56:20,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-07-25 08:56:20,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:20,106 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:56:20,107 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:56:20,113 INFO L574 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 [2018-07-25 08:56:20,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:56:20,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 6. [2018-07-25 08:56:20,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-25 08:56:20,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-25 08:56:20,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 2 [2018-07-25 08:56:20,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:20,156 INFO L472 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-25 08:56:20,156 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:56:20,156 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-25 08:56:20,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-25 08:56:20,157 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:20,157 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-25 08:56:20,157 INFO L415 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2018-07-25 08:56:20,158 INFO L82 PathProgramCache]: Analyzing trace with hash 29892, now seen corresponding path program 1 times [2018-07-25 08:56:20,158 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:20,190 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:56:20,191 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-07-25 08:56:20,193 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:56:20,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:56:20,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:56:20,195 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 3 states. [2018-07-25 08:56:20,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:20,212 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-07-25 08:56:20,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:56:20,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-25 08:56:20,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:20,213 INFO L225 Difference]: With dead ends: 8 [2018-07-25 08:56:20,213 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 08:56:20,214 INFO L574 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 [2018-07-25 08:56:20,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 08:56:20,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 08:56:20,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:56:20,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:56:20,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 3 [2018-07-25 08:56:20,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:20,218 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:56:20,218 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:56:20,219 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:56:20,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:56:20,219 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:20,219 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:56:20,220 INFO L415 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2018-07-25 08:56:20,220 INFO L82 PathProgramCache]: Analyzing trace with hash 926592, now seen corresponding path program 1 times [2018-07-25 08:56:20,220 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:20,292 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:20,292 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:56:20,293 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:56:20,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:56:20,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:56:20,294 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-07-25 08:56:20,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:20,337 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 08:56:20,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:56:20,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-07-25 08:56:20,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:20,338 INFO L225 Difference]: With dead ends: 9 [2018-07-25 08:56:20,339 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:56:20,339 INFO L574 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 [2018-07-25 08:56:20,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:56:20,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-25 08:56:20,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-25 08:56:20,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-25 08:56:20,344 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2018-07-25 08:56:20,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:20,344 INFO L472 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-25 08:56:20,344 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:56:20,344 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-25 08:56:20,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 08:56:20,345 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:20,345 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-25 08:56:20,345 INFO L415 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2018-07-25 08:56:20,346 INFO L82 PathProgramCache]: Analyzing trace with hash 28724391, now seen corresponding path program 1 times [2018-07-25 08:56:20,346 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:20,417 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:20,417 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:56:20,418 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:56:20,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:56:20,418 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:56:20,419 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2018-07-25 08:56:20,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:20,462 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-07-25 08:56:20,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:56:20,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-07-25 08:56:20,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:20,463 INFO L225 Difference]: With dead ends: 8 [2018-07-25 08:56:20,464 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 08:56:20,464 INFO L574 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 [2018-07-25 08:56:20,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 08:56:20,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 08:56:20,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:56:20,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:56:20,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-07-25 08:56:20,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:20,472 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:56:20,473 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:56:20,473 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:56:20,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:56:20,474 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:20,474 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1] [2018-07-25 08:56:20,474 INFO L415 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2018-07-25 08:56:20,475 INFO L82 PathProgramCache]: Analyzing trace with hash 890456061, now seen corresponding path program 2 times [2018-07-25 08:56:20,475 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:20,585 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:20,585 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:56:20,585 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:56:20,586 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:56:20,586 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:56:20,586 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 7 states. [2018-07-25 08:56:20,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:20,604 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2018-07-25 08:56:20,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:56:20,605 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-07-25 08:56:20,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:20,606 INFO L225 Difference]: With dead ends: 7 [2018-07-25 08:56:20,606 INFO L226 Difference]: Without dead ends: 0 [2018-07-25 08:56:20,606 INFO L574 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 [2018-07-25 08:56:20,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-25 08:56:20,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-25 08:56:20,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-25 08:56:20,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-25 08:56:20,608 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-07-25 08:56:20,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:20,608 INFO L472 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-25 08:56:20,608 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:56:20,608 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-25 08:56:20,608 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-25 08:56:20,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-25 08:56:20,696 INFO L425 ceAbstractionStarter]: At program point mainENTRY(lines 20 38) the Hoare annotation is: true [2018-07-25 08:56:20,696 INFO L422 ceAbstractionStarter]: For program point mainFINAL(lines 20 38) no Hoare annotation was computed. [2018-07-25 08:56:20,697 INFO L418 ceAbstractionStarter]: At program point L29-1(lines 29 34) the Hoare annotation is: (and (<= (+ (div main_init 2) main_eat) main_cakeLeft) (<= 0 main_eat)) [2018-07-25 08:56:20,697 INFO L418 ceAbstractionStarter]: At program point L29-2(lines 29 34) the Hoare annotation is: (and (<= (+ (div main_init 2) main_eat) main_cakeLeft) (<= 0 main_eat)) [2018-07-25 08:56:20,697 INFO L425 ceAbstractionStarter]: At program point mainEXIT(lines 20 38) the Hoare annotation is: true [2018-07-25 08:56:20,698 INFO L418 ceAbstractionStarter]: At program point mainErr1ASSERT_VIOLATIONASSERT(line 36) the Hoare annotation is: false [2018-07-25 08:56:20,698 INFO L418 ceAbstractionStarter]: At program point mainErr0ASSERT_VIOLATIONINVARIANTandASSERT(line 30) the Hoare annotation is: false [2018-07-25 08:56:20,718 INFO L202 PluginConnector]: Adding new model GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:56:20 BoogieIcfgContainer [2018-07-25 08:56:20,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:56:20,721 INFO L168 Benchmark]: Toolchain (without parser) took 1279.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-07-25 08:56:20,724 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. [2018-07-25 08:56:20,725 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.84 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:56:20,729 INFO L168 Benchmark]: Boogie Preprocessor took 23.39 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:56:20,729 INFO L168 Benchmark]: RCFGBuilder took 270.04 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:56:20,731 INFO L168 Benchmark]: TraceAbstraction took 936.77 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. [2018-07-25 08:56:20,738 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 Procedure Inliner took 43.84 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 23.39 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 270.04 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 936.77 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: 36]: assertion always holds For all program executions holds that assertion always holds at this location - 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 - 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, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s 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_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-56-20-755.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/GeometricalIntegerCake.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-56-20-755.csv Received shutdown request...