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/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-56c9370 [2018-07-23 15:27:39,878 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 15:27:39,880 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 15:27:39,892 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 15:27:39,893 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 15:27:39,894 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 15:27:39,895 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 15:27:39,897 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 15:27:39,899 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 15:27:39,899 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 15:27:39,900 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-07-23 15:27:39,916 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 15:27:39,916 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 15:27:39,917 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 15:27:39,918 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 15:27:39,919 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 15:27:39,920 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 15:27:39,921 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 15:27:39,922 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 15:27:39,922 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-23 15:27:39,925 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf [2018-07-23 15:27:39,940 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 15:27:39,941 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 15:27:39,942 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 15:27:39,943 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 15:27:39,943 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 15:27:39,943 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 15:27:39,943 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 15:27:39,943 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 15:27:39,990 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 15:27:40,013 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 15:27:40,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 15:27:40,022 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 15:27:40,023 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 15:27:40,024 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl [2018-07-23 15:27:40,024 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl' [2018-07-23 15:27:40,135 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 15:27:40,136 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 15:27:40,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 15:27:40,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 15:27:40,137 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 15:27:40,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:27:40" (1/1) ... [2018-07-23 15:27:40,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:27:40" (1/1) ... [2018-07-23 15:27:40,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:27:40" (1/1) ... [2018-07-23 15:27:40,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:27:40" (1/1) ... [2018-07-23 15:27:40,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:27:40" (1/1) ... [2018-07-23 15:27:40,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:27:40" (1/1) ... [2018-07-23 15:27:40,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:27:40" (1/1) ... [2018-07-23 15:27:40,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 15:27:40,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 15:27:40,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 15:27:40,229 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 15:27:40,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:27:40" (1/1) ... [2018-07-23 15:27:40,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 15:27:40,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 15:27:40,942 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 15:27:40,943 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:27:40 BoogieIcfgContainer [2018-07-23 15:27:40,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 15:27:40,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 15:27:40,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 15:27:40,948 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 15:27:40,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:27:40" (1/2) ... [2018-07-23 15:27:40,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7046f15d and model type pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 03:27:40, skipping insertion in model container [2018-07-23 15:27:40,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:27:40" (2/2) ... [2018-07-23 15:27:40,952 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl [2018-07-23 15:27:40,962 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 15:27:40,971 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 15:27:41,020 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 15:27:41,021 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 15:27:41,021 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 15:27:41,022 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 15:27:41,022 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 15:27:41,022 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 15:27:41,022 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 15:27:41,022 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 15:27:41,023 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 15:27:41,038 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-23 15:27:41,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 15:27:41,047 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:41,049 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 15:27:41,049 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:41,055 INFO L82 PathProgramCache]: Analyzing trace with hash 990345, now seen corresponding path program 1 times [2018-07-23 15:27:41,062 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:41,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:41,256 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:27:41,256 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 15:27:41,261 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 15:27:41,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 15:27:41,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:27:41,282 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-23 15:27:41,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:41,360 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-23 15:27:41,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 15:27:41,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-23 15:27:41,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:41,384 INFO L225 Difference]: With dead ends: 11 [2018-07-23 15:27:41,385 INFO L226 Difference]: Without dead ends: 8 [2018-07-23 15:27:41,390 INFO L573 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 15:27:41,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-23 15:27:41,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-07-23 15:27:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-23 15:27:41,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-23 15:27:41,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-23 15:27:41,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:41,432 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-23 15:27:41,433 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 15:27:41,433 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-23 15:27:41,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:27:41,433 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:41,434 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-23 15:27:41,434 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:41,438 INFO L82 PathProgramCache]: Analyzing trace with hash 951799901, now seen corresponding path program 1 times [2018-07-23 15:27:41,438 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:41,588 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:41,588 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-23 15:27:41,592 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 15:27:41,593 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 15:27:41,593 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:27:41,593 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-07-23 15:27:41,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:41,732 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-23 15:27:41,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 15:27:41,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-07-23 15:27:41,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:41,733 INFO L225 Difference]: With dead ends: 12 [2018-07-23 15:27:41,733 INFO L226 Difference]: Without dead ends: 10 [2018-07-23 15:27:41,734 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:27:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-23 15:27:41,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-07-23 15:27:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-23 15:27:41,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-23 15:27:41,744 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-23 15:27:41,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:41,744 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-23 15:27:41,745 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 15:27:41,745 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-23 15:27:41,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:27:41,745 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:41,746 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-23 15:27:41,746 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:41,746 INFO L82 PathProgramCache]: Analyzing trace with hash -148250831, now seen corresponding path program 2 times [2018-07-23 15:27:41,748 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:41,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:41,876 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:41,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:27:41,881 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:27:41,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:27:41,882 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:27:41,882 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2018-07-23 15:27:41,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:41,981 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-23 15:27:41,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 15:27:41,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2018-07-23 15:27:41,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:41,983 INFO L225 Difference]: With dead ends: 13 [2018-07-23 15:27:41,983 INFO L226 Difference]: Without dead ends: 11 [2018-07-23 15:27:41,984 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:27:41,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-23 15:27:41,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-23 15:27:41,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-23 15:27:41,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-23 15:27:41,995 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-07-23 15:27:41,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:41,995 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-23 15:27:41,996 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:27:41,996 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-23 15:27:41,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-23 15:27:41,997 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:41,997 INFO L353 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-07-23 15:27:41,998 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:41,998 INFO L82 PathProgramCache]: Analyzing trace with hash -735049467, now seen corresponding path program 3 times [2018-07-23 15:27:41,998 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:42,145 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:42,145 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:42,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:27:42,146 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:27:42,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:27:42,147 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:27:42,147 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-07-23 15:27:42,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:42,289 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-07-23 15:27:42,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 15:27:42,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-07-23 15:27:42,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:42,290 INFO L225 Difference]: With dead ends: 18 [2018-07-23 15:27:42,290 INFO L226 Difference]: Without dead ends: 16 [2018-07-23 15:27:42,293 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:27:42,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-23 15:27:42,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2018-07-23 15:27:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-23 15:27:42,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-23 15:27:42,303 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2018-07-23 15:27:42,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:42,303 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-23 15:27:42,304 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:27:42,304 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-23 15:27:42,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:27:42,305 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:42,305 INFO L353 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-07-23 15:27:42,305 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:42,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1077400147, now seen corresponding path program 4 times [2018-07-23 15:27:42,306 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:42,529 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:42,529 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:42,529 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:27:42,530 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:27:42,530 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:27:42,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:27:42,533 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 10 states. [2018-07-23 15:27:42,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:42,769 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-07-23 15:27:42,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 15:27:42,769 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2018-07-23 15:27:42,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:42,772 INFO L225 Difference]: With dead ends: 22 [2018-07-23 15:27:42,772 INFO L226 Difference]: Without dead ends: 20 [2018-07-23 15:27:42,773 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:27:42,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-23 15:27:42,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-07-23 15:27:42,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-23 15:27:42,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-23 15:27:42,786 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2018-07-23 15:27:42,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:42,787 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-23 15:27:42,787 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:27:42,787 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-23 15:27:42,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:27:42,788 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:42,788 INFO L353 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-07-23 15:27:42,789 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:42,789 INFO L82 PathProgramCache]: Analyzing trace with hash 602783317, now seen corresponding path program 5 times [2018-07-23 15:27:42,789 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:42,968 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-07-23 15:27:42,969 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:42,969 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 15:27:42,969 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 15:27:42,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 15:27:42,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:27:42,970 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 4 states. [2018-07-23 15:27:42,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:42,985 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-23 15:27:42,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 15:27:42,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-07-23 15:27:42,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:42,986 INFO L225 Difference]: With dead ends: 19 [2018-07-23 15:27:42,987 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 15:27:42,987 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 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 15:27:42,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 15:27:42,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 15:27:42,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 15:27:42,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 15:27:42,989 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-07-23 15:27:42,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:42,989 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 15:27:42,989 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 15:27:42,991 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 15:27:42,991 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 15:27:42,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 15:27:43,049 INFO L421 ceAbstractionStarter]: For program point L262(lines 262 273) no Hoare annotation was computed. [2018-07-23 15:27:43,050 INFO L421 ceAbstractionStarter]: For program point L283(lines 283 293) no Hoare annotation was computed. [2018-07-23 15:27:43,050 INFO L417 ceAbstractionStarter]: At program point L382(lines 382 389) the Hoare annotation is: false [2018-07-23 15:27:43,051 INFO L421 ceAbstractionStarter]: For program point L366(lines 361 367) no Hoare annotation was computed. [2018-07-23 15:27:43,052 INFO L417 ceAbstractionStarter]: At program point L388(lines 255 388) the Hoare annotation is: (let ((.cse0 (<= ~r1 0)) (.cse1 (<= 0 ~r1))) (or (and (<= ULTIMATE.start_assert_~arg 1) .cse0 (<= 1 ~mode4) (<= 1 ~mode1) (<= ~mode1 1) (<= ~mode4 1) (<= 1 ULTIMATE.start_assert_~arg) .cse1 (not (= ~p3_old ~nomsg))) (and .cse0 (<= ~send3 127) (= ~mode3 (* 256 (div ~mode3 256))) (= ~mode1 (* 256 (div ~mode1 256))) (= 0 (+ ~nomsg 1)) (= ~mode4 (* 256 (div ~mode4 256))) (<= 0 ~send3) .cse1))) [2018-07-23 15:27:43,052 INFO L421 ceAbstractionStarter]: For program point L321(lines 312 322) no Hoare annotation was computed. [2018-07-23 15:27:43,052 INFO L421 ceAbstractionStarter]: For program point L341(lines 335 342) no Hoare annotation was computed. [2018-07-23 15:27:43,052 INFO L421 ceAbstractionStarter]: For program point L326(lines 326 336) no Hoare annotation was computed. [2018-07-23 15:27:43,055 INFO L421 ceAbstractionStarter]: For program point L303(lines 303 313) no Hoare annotation was computed. [2018-07-23 15:27:43,055 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 74 391) the Hoare annotation is: true [2018-07-23 15:27:43,056 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 74 391) the Hoare annotation is: false [2018-07-23 15:27:43,056 INFO L421 ceAbstractionStarter]: For program point L278(lines 272 279) no Hoare annotation was computed. [2018-07-23 15:27:43,056 INFO L421 ceAbstractionStarter]: For program point L355(lines 355 362) no Hoare annotation was computed. [2018-07-23 15:27:43,057 INFO L417 ceAbstractionStarter]: At program point L376(lines 376 383) the Hoare annotation is: (and (<= ULTIMATE.start_assert_~arg 1) (<= ~r1 0) (<= 1 ~mode4) (<= 1 ~mode1) (<= ~mode1 1) (<= ~mode4 1) (<= 1 ULTIMATE.start_assert_~arg) (<= 0 ~r1) (not (= ~p3_old ~nomsg))) [2018-07-23 15:27:43,057 INFO L421 ceAbstractionStarter]: For program point L298(lines 292 299) no Hoare annotation was computed. [2018-07-23 15:27:43,057 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startErr0AssertViolationASSERT(line 390) the Hoare annotation is: false [2018-07-23 15:27:43,057 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 74 391) no Hoare annotation was computed. [2018-07-23 15:27:43,071 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 03:27:43 BoogieIcfgContainer [2018-07-23 15:27:43,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 15:27:43,073 INFO L168 Benchmark]: Toolchain (without parser) took 2936.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. [2018-07-23 15:27:43,075 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 15:27:43,076 INFO L168 Benchmark]: Boogie Preprocessor took 88.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 15:27:43,077 INFO L168 Benchmark]: RCFGBuilder took 714.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-23 15:27:43,078 INFO L168 Benchmark]: TraceAbstraction took 2126.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-07-23 15:27:43,085 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 714.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2126.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 390]: 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: 376]: Loop Invariant Derived loop invariant: (((((((assert_~arg <= 1 && ~r1 <= 0) && 1 <= ~mode4) && 1 <= ~mode1) && ~mode1 <= 1) && ~mode4 <= 1) && 1 <= assert_~arg) && 0 <= ~r1) && !(~p3_old == ~nomsg) - InvariantResult [Line: 382]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 255]: Loop Invariant Derived loop invariant: ((((((((assert_~arg <= 1 && ~r1 <= 0) && 1 <= ~mode4) && 1 <= ~mode1) && ~mode1 <= 1) && ~mode4 <= 1) && 1 <= assert_~arg) && 0 <= ~r1) && !(~p3_old == ~nomsg)) || (((((((~r1 <= 0 && ~send3 <= 127) && ~mode3 == 256 * (~mode3 / 256)) && ~mode1 == 256 * (~mode1 / 256)) && 0 == ~nomsg + 1) && ~mode4 == 256 * (~mode4 / 256)) && 0 <= ~send3) && 0 <= ~r1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. SAFE Result, 2.0s OverallTime, 6 OverallIterations, 8 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 18 SDtfs, 22 SDslu, 39 SDs, 0 SdLazy, 141 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=5, 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 9 NumberOfFragments, 102 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 5278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 56/106 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/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_15-27-43-112.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_15-27-43-112.csv Received shutdown request...