java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-935f392 [2018-07-23 13:41:06,717 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 13:41:06,720 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 13:41:06,734 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 13:41:06,735 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 13:41:06,736 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 13:41:06,737 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 13:41:06,739 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 13:41:06,741 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 13:41:06,741 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 13:41:06,742 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-07-23 13:41:06,777 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf [2018-07-23 13:41:06,791 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 13:41:06,791 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 13:41:06,792 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 13:41:06,792 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 13:41:06,793 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 13:41:06,793 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 13:41:06,793 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 13:41:06,793 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 13:41:06,872 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 13:41:06,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 13:41:06,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 13:41:06,909 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 13:41:06,909 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 13:41:06,910 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-07-23 13:41:06,911 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl' [2018-07-23 13:41:06,989 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 13:41:06,991 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 13:41:06,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 13:41:06,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 13:41:06,992 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 13:41:07,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:41:06" (1/1) ... [2018-07-23 13:41:07,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:41:06" (1/1) ... [2018-07-23 13:41:07,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:41:06" (1/1) ... [2018-07-23 13:41:07,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:41:06" (1/1) ... [2018-07-23 13:41:07,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:41:06" (1/1) ... [2018-07-23 13:41:07,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:41:06" (1/1) ... [2018-07-23 13:41:07,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:41:06" (1/1) ... [2018-07-23 13:41:07,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 13:41:07,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 13:41:07,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 13:41:07,047 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 13:41:07,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:41:06" (1/1) ... [2018-07-23 13:41:07,142 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-07-23 13:41:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 13:41:07,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 13:41:07,330 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 13:41:07,332 INFO L202 PluginConnector]: Adding new model jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:41:07 BoogieIcfgContainer [2018-07-23 13:41:07,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 13:41:07,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 13:41:07,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 13:41:07,337 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 13:41:07,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:41:06" (1/2) ... [2018-07-23 13:41:07,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c1fdb4 and model type jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:41:07, skipping insertion in model container [2018-07-23 13:41:07,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:41:07" (2/2) ... [2018-07-23 13:41:07,342 INFO L112 eAbstractionObserver]: Analyzing ICFG jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-07-23 13:41:07,352 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 13:41:07,360 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 13:41:07,402 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 13:41:07,403 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 13:41:07,403 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 13:41:07,404 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 13:41:07,404 INFO L376 AbstractCegarLoop]: Backedges is CANONICAL [2018-07-23 13:41:07,404 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 13:41:07,404 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 13:41:07,405 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 13:41:07,405 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 13:41:07,418 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-23 13:41:07,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-23 13:41:07,426 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:41:07,428 INFO L357 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-23 13:41:07,428 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:41:07,434 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-07-23 13:41:07,441 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:41:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:41:07,647 WARN L169 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2018-07-23 13:41:07,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:41:07,655 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:41:07,656 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 13:41:07,659 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:41:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:41:07,660 INFO L185 omatonBuilderFactory]: Interpolants [8#true, 9#false, 10#(and (or (not (= ULTIMATE.start_main_~i~5 0)) (and (or (<= ULTIMATE.start_main_~y~5 ULTIMATE.start_main_~j~5) (<= ULTIMATE.start_main_~y~5 0)) (or (<= ULTIMATE.start_main_~j~5 (+ ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~y~5)) (< 0 (+ ULTIMATE.start_main_~y~5 1))))) (or (= ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~x~5) (= ULTIMATE.start_main_~i~5 0)))] [2018-07-23 13:41:07,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:41:07,661 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 13:41:07,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 13:41:07,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:41:07,678 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-07-23 13:41:07,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:41:07,712 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2018-07-23 13:41:07,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 13:41:07,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-23 13:41:07,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:41:07,728 INFO L225 Difference]: With dead ends: 8 [2018-07-23 13:41:07,729 INFO L226 Difference]: Without dead ends: 5 [2018-07-23 13:41:07,733 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:41:07,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-07-23 13:41:07,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-07-23 13:41:07,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-07-23 13:41:07,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-07-23 13:41:07,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-07-23 13:41:07,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:41:07,784 INFO L471 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-07-23 13:41:07,784 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 13:41:07,785 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-07-23 13:41:07,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 13:41:07,785 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:41:07,785 INFO L357 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 13:41:07,786 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:41:07,787 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-07-23 13:41:07,787 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:41:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:41:07,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:41:07,871 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:41:07,871 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 13:41:07,871 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:41:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:41:07,872 INFO L185 omatonBuilderFactory]: Interpolants [37#true, 38#false, 39#(and (<= ULTIMATE.start_main_~y~5 ULTIMATE.start_main_~j~5) (= ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~x~5) (<= ULTIMATE.start_main_~j~5 ULTIMATE.start_main_~y~5)), 40#(and (= ULTIMATE.start_main_~i~5 (+ ULTIMATE.start_main_~x~5 1)) (or (<= ULTIMATE.start_main_~y~5 0) (<= (+ ULTIMATE.start_main_~y~5 1) ULTIMATE.start_main_~j~5)) (or (<= ULTIMATE.start_main_~j~5 (+ ULTIMATE.start_main_~y~5 1)) (< 0 (+ ULTIMATE.start_main_~y~5 1))))] [2018-07-23 13:41:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:41:07,875 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 13:41:07,875 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 13:41:07,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:41:07,876 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-07-23 13:41:07,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:41:07,898 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-07-23 13:41:07,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 13:41:07,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-23 13:41:07,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:41:07,900 INFO L225 Difference]: With dead ends: 8 [2018-07-23 13:41:07,900 INFO L226 Difference]: Without dead ends: 6 [2018-07-23 13:41:07,901 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:41:07,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-23 13:41:07,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-23 13:41:07,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-23 13:41:07,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-23 13:41:07,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-07-23 13:41:07,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:41:07,905 INFO L471 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-23 13:41:07,906 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 13:41:07,906 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-23 13:41:07,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-23 13:41:07,906 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:41:07,907 INFO L357 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-23 13:41:07,907 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:41:07,907 INFO L82 PathProgramCache]: Analyzing trace with hash 28844579, now seen corresponding path program 2 times [2018-07-23 13:41:07,907 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:41:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:41:08,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:41:08,006 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:41:08,006 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-23 13:41:08,006 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:41:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:41:08,007 INFO L185 omatonBuilderFactory]: Interpolants [69#true, 70#false, 71#(and (<= ULTIMATE.start_main_~y~5 ULTIMATE.start_main_~j~5) (= ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~x~5) (<= ULTIMATE.start_main_~j~5 ULTIMATE.start_main_~y~5)), 72#(and (= ULTIMATE.start_main_~i~5 (+ ULTIMATE.start_main_~x~5 1)) (<= ULTIMATE.start_main_~j~5 (+ ULTIMATE.start_main_~y~5 1)) (<= (+ ULTIMATE.start_main_~y~5 1) ULTIMATE.start_main_~j~5)), 73#(and (or (<= (+ ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~y~5) (+ ULTIMATE.start_main_~j~5 ULTIMATE.start_main_~x~5)) (<= ULTIMATE.start_main_~y~5 0)) (or (<= (+ ULTIMATE.start_main_~j~5 ULTIMATE.start_main_~x~5) (+ ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~y~5)) (< 0 (+ ULTIMATE.start_main_~y~5 1))))] [2018-07-23 13:41:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:41:08,008 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 13:41:08,008 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 13:41:08,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-23 13:41:08,009 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-07-23 13:41:08,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:41:08,043 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-23 13:41:08,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 13:41:08,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-07-23 13:41:08,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:41:08,044 INFO L225 Difference]: With dead ends: 9 [2018-07-23 13:41:08,044 INFO L226 Difference]: Without dead ends: 7 [2018-07-23 13:41:08,045 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-23 13:41:08,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-23 13:41:08,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-23 13:41:08,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-23 13:41:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-23 13:41:08,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-07-23 13:41:08,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:41:08,052 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-23 13:41:08,057 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 13:41:08,058 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-23 13:41:08,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 13:41:08,058 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:41:08,058 INFO L357 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-07-23 13:41:08,059 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:41:08,059 INFO L82 PathProgramCache]: Analyzing trace with hash 894183756, now seen corresponding path program 3 times [2018-07-23 13:41:08,059 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:41:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:41:08,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:41:08,182 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:41:08,182 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 13:41:08,182 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:41:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:41:08,183 INFO L185 omatonBuilderFactory]: Interpolants [106#true, 107#false, 108#(and (<= ULTIMATE.start_main_~y~5 ULTIMATE.start_main_~j~5) (= ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~x~5) (<= ULTIMATE.start_main_~j~5 ULTIMATE.start_main_~y~5)), 109#(and (= ULTIMATE.start_main_~i~5 (+ ULTIMATE.start_main_~x~5 1)) (<= ULTIMATE.start_main_~j~5 (+ ULTIMATE.start_main_~y~5 1)) (<= (+ ULTIMATE.start_main_~y~5 1) ULTIMATE.start_main_~j~5)), 110#(and (<= (+ ULTIMATE.start_main_~j~5 ULTIMATE.start_main_~x~5) (+ ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~y~5)) (<= (+ ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~y~5) (+ ULTIMATE.start_main_~j~5 ULTIMATE.start_main_~x~5))), 111#(and (or (<= (+ ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~y~5) (+ ULTIMATE.start_main_~j~5 ULTIMATE.start_main_~x~5)) (<= ULTIMATE.start_main_~y~5 0)) (or (<= (+ ULTIMATE.start_main_~j~5 ULTIMATE.start_main_~x~5) (+ ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~y~5)) (< 0 (+ ULTIMATE.start_main_~y~5 1))))] [2018-07-23 13:41:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:41:08,187 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 13:41:08,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 13:41:08,187 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-23 13:41:08,188 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-07-23 13:41:08,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:41:08,212 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2018-07-23 13:41:08,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 13:41:08,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-07-23 13:41:08,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:41:08,213 INFO L225 Difference]: With dead ends: 7 [2018-07-23 13:41:08,213 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 13:41:08,216 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-23 13:41:08,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 13:41:08,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 13:41:08,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 13:41:08,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 13:41:08,220 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-07-23 13:41:08,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:41:08,221 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 13:41:08,221 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 13:41:08,221 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 13:41:08,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 13:41:08,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 13:41:08,277 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 55) the Hoare annotation is: true [2018-07-23 13:41:08,277 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 55) no Hoare annotation was computed. [2018-07-23 13:41:08,278 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 1 55) the Hoare annotation is: false [2018-07-23 13:41:08,279 INFO L417 ceAbstractionStarter]: At program point L52(lines 30 52) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~y~5)) (.cse0 (+ ULTIMATE.start_main_~j~5 ULTIMATE.start_main_~x~5))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2018-07-23 13:41:08,279 INFO L417 ceAbstractionStarter]: At program point L43(lines 43 53) the Hoare annotation is: false [2018-07-23 13:41:08,279 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startErr0AssertViolationASSERT(line 54) the Hoare annotation is: false [2018-07-23 13:41:08,290 INFO L202 PluginConnector]: Adding new model jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 01:41:08 BoogieIcfgContainer [2018-07-23 13:41:08,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 13:41:08,291 INFO L168 Benchmark]: Toolchain (without parser) took 1302.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-07-23 13:41:08,293 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 13:41:08,294 INFO L168 Benchmark]: Boogie Preprocessor took 54.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 13:41:08,295 INFO L168 Benchmark]: RCFGBuilder took 285.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 13:41:08,296 INFO L168 Benchmark]: TraceAbstraction took 956.80 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-23 13:41:08,299 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 54.80 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 285.88 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 956.80 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: 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: 54]: 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: 30]: Loop Invariant Derived loop invariant: main_~j~5 + main_~x~5 <= main_~i~5 + main_~y~5 && main_~i~5 + main_~y~5 <= main_~j~5 + main_~x~5 - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: false - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 6 SDs, 0 SdLazy, 27 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/10 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 19 HoareAnnotationTreeSize, 5 FomulaSimplifications, 74 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 720 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/10 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/jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_13-41-08-317.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/jm2006.c.i_3.bplTransformedIcfg_BEv2_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_13-41-08-317.csv Received shutdown request...