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/20170304-DifficultPathPrograms/cggmp2005b.c.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-935f392 [2018-07-23 13:42:29,843 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 13:42:29,845 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 13:42:29,856 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 13:42:29,857 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 13:42:29,858 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 13:42:29,859 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 13:42:29,861 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 13:42:29,863 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 13:42:29,863 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 13:42:29,864 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 13:42:29,865 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 13:42:29,866 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 13:42:29,867 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 13:42:29,868 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 13:42:29,869 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 13:42:29,870 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 13:42:29,871 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 13:42:29,874 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 13:42:29,875 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 13:42:29,876 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 13:42:29,877 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 13:42:29,880 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 13:42:29,880 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 13:42:29,880 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 13:42:29,881 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 13:42:29,882 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 13:42:29,883 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 13:42:29,884 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 13:42:29,885 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 13:42:29,885 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 13:42:29,886 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-23 13:42:29,889 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 13:42:29,902 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 13:42:29,903 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 13:42:29,904 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 13:42:29,904 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 13:42:29,905 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 13:42:29,905 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 13:42:29,905 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 13:42:29,905 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 13:42:29,949 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 13:42:29,965 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 13:42:29,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 13:42:29,973 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 13:42:29,974 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 13:42:29,974 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/cggmp2005b.c.i_4.bpl [2018-07-23 13:42:29,975 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/cggmp2005b.c.i_4.bpl' [2018-07-23 13:42:30,035 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 13:42:30,037 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 13:42:30,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 13:42:30,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 13:42:30,038 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 13:42:30,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:42:30" (1/1) ... [2018-07-23 13:42:30,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:42:30" (1/1) ... [2018-07-23 13:42:30,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:42:30" (1/1) ... [2018-07-23 13:42:30,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:42:30" (1/1) ... [2018-07-23 13:42:30,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:42:30" (1/1) ... [2018-07-23 13:42:30,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:42:30" (1/1) ... [2018-07-23 13:42:30,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:42:30" (1/1) ... [2018-07-23 13:42:30,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 13:42:30,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 13:42:30,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 13:42:30,086 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 13:42:30,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:42:30" (1/1) ... [2018-07-23 13:42:30,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 13:42:30,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 13:42:30,288 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 13:42:30,289 INFO L202 PluginConnector]: Adding new model cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:42:30 BoogieIcfgContainer [2018-07-23 13:42:30,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 13:42:30,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 13:42:30,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 13:42:30,294 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 13:42:30,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:42:30" (1/2) ... [2018-07-23 13:42:30,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36567908 and model type cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:42:30, skipping insertion in model container [2018-07-23 13:42:30,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:42:30" (2/2) ... [2018-07-23 13:42:30,299 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005b.c.i_4.bpl [2018-07-23 13:42:30,308 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 13:42:30,316 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 13:42:30,363 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 13:42:30,364 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 13:42:30,365 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 13:42:30,365 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 13:42:30,365 INFO L376 AbstractCegarLoop]: Backedges is CANONICAL [2018-07-23 13:42:30,365 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 13:42:30,366 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 13:42:30,366 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 13:42:30,366 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 13:42:30,381 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-07-23 13:42:30,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 13:42:30,391 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:42:30,393 INFO L357 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 13:42:30,393 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:42:30,400 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-07-23 13:42:30,407 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:42:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:42:30,487 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 13:42:30,493 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:42:30,494 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 13:42:30,496 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:42:30,497 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 13:42:30,497 INFO L185 omatonBuilderFactory]: Interpolants [10#true, 11#false, 12#(<= ULTIMATE.start_main_~i~4 0)] [2018-07-23 13:42:30,497 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 13:42:30,499 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 13:42:30,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 13:42:30,515 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:42:30,519 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-07-23 13:42:30,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:42:30,564 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2018-07-23 13:42:30,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 13:42:30,567 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-23 13:42:30,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:42:30,585 INFO L225 Difference]: With dead ends: 15 [2018-07-23 13:42:30,586 INFO L226 Difference]: Without dead ends: 9 [2018-07-23 13:42:30,591 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:42:30,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-23 13:42:30,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-23 13:42:30,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-23 13:42:30,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-23 13:42:30,641 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2018-07-23 13:42:30,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:42:30,641 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-23 13:42:30,641 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 13:42:30,642 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-23 13:42:30,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 13:42:30,644 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:42:30,645 INFO L357 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-23 13:42:30,645 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:42:30,646 INFO L82 PathProgramCache]: Analyzing trace with hash 209100445, now seen corresponding path program 1 times [2018-07-23 13:42:30,646 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:42:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:42:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:42:30,677 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:42:30,677 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 13:42:30,678 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:42:30,678 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 13:42:30,678 INFO L185 omatonBuilderFactory]: Interpolants [61#true, 62#false, 63#(<= (+ ULTIMATE.start_main_~j~4 100) 0)] [2018-07-23 13:42:30,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:42:30,680 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 13:42:30,681 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 13:42:30,681 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:42:30,682 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2018-07-23 13:42:30,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:42:30,691 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2018-07-23 13:42:30,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 13:42:30,691 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-07-23 13:42:30,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:42:30,693 INFO L225 Difference]: With dead ends: 17 [2018-07-23 13:42:30,694 INFO L226 Difference]: Without dead ends: 11 [2018-07-23 13:42:30,696 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:42:30,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-23 13:42:30,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-23 13:42:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-23 13:42:30,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-23 13:42:30,702 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-07-23 13:42:30,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:42:30,702 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-23 13:42:30,702 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 13:42:30,703 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-23 13:42:30,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-23 13:42:30,703 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:42:30,703 INFO L357 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-07-23 13:42:30,704 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:42:30,705 INFO L82 PathProgramCache]: Analyzing trace with hash -850198025, now seen corresponding path program 1 times [2018-07-23 13:42:30,705 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:42:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:42:30,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-23 13:42:30,731 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:42:30,731 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 13:42:30,732 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:42:30,732 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 13:42:30,732 INFO L185 omatonBuilderFactory]: Interpolants [120#true, 121#false, 122#(<= ULTIMATE.start_main_~i~4 0), 123#(<= ULTIMATE.start_main_~i~4 1)] [2018-07-23 13:42:30,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-23 13:42:30,733 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 13:42:30,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 13:42:30,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:42:30,734 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2018-07-23 13:42:30,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:42:30,755 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2018-07-23 13:42:30,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 13:42:30,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-07-23 13:42:30,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:42:30,757 INFO L225 Difference]: With dead ends: 17 [2018-07-23 13:42:30,757 INFO L226 Difference]: Without dead ends: 15 [2018-07-23 13:42:30,758 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:42:30,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-23 13:42:30,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-23 13:42:30,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-23 13:42:30,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2018-07-23 13:42:30,767 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2018-07-23 13:42:30,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:42:30,768 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2018-07-23 13:42:30,768 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 13:42:30,768 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2018-07-23 13:42:30,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 13:42:30,770 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:42:30,770 INFO L357 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2018-07-23 13:42:30,770 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:42:30,770 INFO L82 PathProgramCache]: Analyzing trace with hash 186575053, now seen corresponding path program 2 times [2018-07-23 13:42:30,770 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:42:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:42:30,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:42:30,839 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:42:30,840 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-23 13:42:30,840 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:42:30,840 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 13:42:30,841 INFO L185 omatonBuilderFactory]: Interpolants [192#(<= 120 ULTIMATE.start_main_~i~4), 188#true, 189#false, 190#(<= (+ ULTIMATE.start_main_~j~4 100) 0), 191#(<= (+ ULTIMATE.start_main_~j~4 100) ULTIMATE.start_main_~i~4)] [2018-07-23 13:42:30,841 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:42:30,841 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 13:42:30,842 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 13:42:30,842 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 13:42:30,843 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 5 states. [2018-07-23 13:42:30,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:42:30,883 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2018-07-23 13:42:30,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 13:42:30,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-07-23 13:42:30,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:42:30,884 INFO L225 Difference]: With dead ends: 25 [2018-07-23 13:42:30,885 INFO L226 Difference]: Without dead ends: 17 [2018-07-23 13:42:30,885 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-07-23 13:42:30,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-23 13:42:30,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-23 13:42:30,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-23 13:42:30,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-07-23 13:42:30,891 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2018-07-23 13:42:30,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:42:30,891 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-07-23 13:42:30,892 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 13:42:30,892 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-07-23 13:42:30,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 13:42:30,893 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:42:30,893 INFO L357 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1] [2018-07-23 13:42:30,893 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:42:30,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1490411687, now seen corresponding path program 3 times [2018-07-23 13:42:30,893 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:42:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:42:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-07-23 13:42:30,923 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:42:30,923 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 13:42:30,924 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:42:30,924 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 13:42:30,924 INFO L185 omatonBuilderFactory]: Interpolants [281#true, 282#false, 283#(= ULTIMATE.start_main_~k~4 4)] [2018-07-23 13:42:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-07-23 13:42:30,925 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 13:42:30,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 13:42:30,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:42:30,926 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2018-07-23 13:42:30,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:42:30,932 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2018-07-23 13:42:30,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 13:42:30,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-07-23 13:42:30,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:42:30,933 INFO L225 Difference]: With dead ends: 17 [2018-07-23 13:42:30,933 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 13:42:30,934 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:42:30,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 13:42:30,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 13:42:30,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 13:42:30,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 13:42:30,935 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-07-23 13:42:30,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:42:30,935 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 13:42:30,935 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 13:42:30,935 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 13:42:30,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 13:42:30,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 13:42:31,045 INFO L417 ceAbstractionStarter]: At program point L52(lines 35 52) the Hoare annotation is: (or (= ULTIMATE.start_main_~k~4 4) (<= ULTIMATE.start_main_~i~4 1)) [2018-07-23 13:42:31,046 INFO L417 ceAbstractionStarter]: At program point L40(lines 40 49) the Hoare annotation is: (or (= ULTIMATE.start_main_~k~4 4) (<= ULTIMATE.start_main_~i~4 1)) [2018-07-23 13:42:31,046 INFO L417 ceAbstractionStarter]: At program point L21(lines 21 32) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~i~4 0) (<= (+ ULTIMATE.start_main_~j~4 100) ULTIMATE.start_main_~i~4)) (= ULTIMATE.start_main_~k~4 4)) [2018-07-23 13:42:31,046 INFO L417 ceAbstractionStarter]: At program point L31(lines 31 36) the Hoare annotation is: false [2018-07-23 13:42:31,046 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startErr0AssertViolationASSERT(line 37) the Hoare annotation is: false [2018-07-23 13:42:31,047 INFO L417 ceAbstractionStarter]: At program point L48(lines 18 48) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~i~4 0) (<= (+ ULTIMATE.start_main_~j~4 100) ULTIMATE.start_main_~i~4)) (= ULTIMATE.start_main_~k~4 4)) [2018-07-23 13:42:31,047 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 53) the Hoare annotation is: true [2018-07-23 13:42:31,047 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 53) no Hoare annotation was computed. [2018-07-23 13:42:31,047 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 53) no Hoare annotation was computed. [2018-07-23 13:42:31,058 INFO L202 PluginConnector]: Adding new model cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 01:42:31 BoogieIcfgContainer [2018-07-23 13:42:31,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 13:42:31,059 INFO L168 Benchmark]: Toolchain (without parser) took 1023.09 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 13:42:31,061 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 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 13:42:31,062 INFO L168 Benchmark]: Boogie Preprocessor took 46.91 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 13:42:31,063 INFO L168 Benchmark]: RCFGBuilder took 203.64 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 13:42:31,064 INFO L168 Benchmark]: TraceAbstraction took 768.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-23 13:42:31,067 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 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.91 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 203.64 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 768.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 37]: 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: 40]: Loop Invariant Derived loop invariant: main_~k~4 == 4 || main_~i~4 <= 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: main_~k~4 == 4 || main_~i~4 <= 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (main_~i~4 <= 0 && main_~j~4 + 100 <= main_~i~4) || main_~k~4 == 4 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (main_~i~4 <= 0 && main_~j~4 + 100 <= main_~i~4) || main_~k~4 == 4 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 6 SDslu, 33 SDs, 0 SdLazy, 29 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 30/36 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 23 NumberOfFragments, 43 HoareAnnotationTreeSize, 7 FomulaSimplifications, 60 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 34 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 1225 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 30/36 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/cggmp2005b.c.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_13-42-31-080.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/cggmp2005b.c.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_13-42-31-080.csv Received shutdown request...