java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-smtinterpol.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-WithArrays.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ff8eab6 [2018-09-26 09:51:16,141 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 09:51:16,143 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 09:51:16,157 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 09:51:16,157 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 09:51:16,158 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 09:51:16,160 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 09:51:16,161 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 09:51:16,163 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 09:51:16,164 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 09:51:16,165 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-26 09:51:16,190 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-smtinterpol.epf [2018-09-26 09:51:16,201 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 09:51:16,201 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 09:51:16,203 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-26 09:51:16,203 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-09-26 09:51:16,203 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 09:51:16,203 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-09-26 09:51:16,204 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-09-26 09:51:16,204 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 09:51:16,249 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 09:51:16,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 09:51:16,276 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 09:51:16,278 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 09:51:16,279 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 09:51:16,280 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-WithArrays.bpl [2018-09-26 09:51:16,280 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-WithArrays.bpl' [2018-09-26 09:51:16,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 09:51:16,344 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 09:51:16,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 09:51:16,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 09:51:16,346 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 09:51:16,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Luxembourg-WithArrays.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:16" (1/1) ... [2018-09-26 09:51:16,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Luxembourg-WithArrays.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:16" (1/1) ... [2018-09-26 09:51:16,385 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-26 09:51:16,386 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-26 09:51:16,386 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-26 09:51:16,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 09:51:16,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 09:51:16,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 09:51:16,390 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 09:51:16,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Luxembourg-WithArrays.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:16" (1/1) ... [2018-09-26 09:51:16,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Luxembourg-WithArrays.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:16" (1/1) ... [2018-09-26 09:51:16,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Luxembourg-WithArrays.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:16" (1/1) ... [2018-09-26 09:51:16,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Luxembourg-WithArrays.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:16" (1/1) ... [2018-09-26 09:51:16,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Luxembourg-WithArrays.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:16" (1/1) ... [2018-09-26 09:51:16,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Luxembourg-WithArrays.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:16" (1/1) ... [2018-09-26 09:51:16,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Luxembourg-WithArrays.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:16" (1/1) ... [2018-09-26 09:51:16,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 09:51:16,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 09:51:16,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 09:51:16,415 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 09:51:16,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Luxembourg-WithArrays.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:16" (1/1) ... [2018-09-26 09:51:16,502 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-09-26 09:51:16,502 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-26 09:51:16,502 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-26 09:51:16,625 INFO L343 CfgBuilder]: Using library mode [2018-09-26 09:51:16,626 INFO L202 PluginConnector]: Adding new model Luxembourg-WithArrays.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:51:16 BoogieIcfgContainer [2018-09-26 09:51:16,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 09:51:16,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 09:51:16,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 09:51:16,632 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 09:51:16,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-WithArrays.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:16" (1/2) ... [2018-09-26 09:51:16,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c29f9f and model type Luxembourg-WithArrays.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:51:16, skipping insertion in model container [2018-09-26 09:51:16,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-WithArrays.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:51:16" (2/2) ... [2018-09-26 09:51:16,637 INFO L112 eAbstractionObserver]: Analyzing ICFG Luxembourg-WithArrays.bpl [2018-09-26 09:51:16,648 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-09-26 09:51:16,656 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 09:51:16,707 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 09:51:16,708 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 09:51:16,709 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 09:51:16,709 INFO L383 AbstractCegarLoop]: Compute interpolants for PDR [2018-09-26 09:51:16,709 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 09:51:16,709 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 09:51:16,710 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 09:51:16,710 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 09:51:16,710 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 09:51:16,726 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-26 09:51:16,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-26 09:51:16,736 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:51:16,737 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-26 09:51:16,739 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:51:16,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:51:16,746 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2018-09-26 09:51:16,753 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:51:16,890 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:51:16,890 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 09:51:16,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-26 09:51:16,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-26 09:51:16,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-26 09:51:16,925 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-09-26 09:51:17,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:51:17,039 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2018-09-26 09:51:17,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-26 09:51:17,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2018-09-26 09:51:17,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:51:17,062 INFO L225 Difference]: With dead ends: 11 [2018-09-26 09:51:17,062 INFO L226 Difference]: Without dead ends: 5 [2018-09-26 09:51:17,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-26 09:51:17,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-09-26 09:51:17,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-09-26 09:51:17,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-09-26 09:51:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-09-26 09:51:17,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-09-26 09:51:17,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:51:17,106 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-09-26 09:51:17,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-26 09:51:17,107 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-09-26 09:51:17,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 09:51:17,107 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:51:17,107 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 09:51:17,108 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:51:17,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:51:17,108 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2018-09-26 09:51:17,109 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:51:18,165 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-09-26 09:51:19,229 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-09-26 09:51:20,266 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2018-09-26 09:51:21,519 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-09-26 09:51:24,140 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-09-26 09:51:30,778 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-09-26 09:51:53,323 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-09-26 09:53:31,179 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 124 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown