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-z3.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/AnnoyingVillain.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ff8eab6 [2018-09-26 09:11:54,817 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 09:11:54,820 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 09:11:54,832 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 09:11:54,832 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 09:11:54,834 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 09:11:54,835 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 09:11:54,837 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 09:11:54,838 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 09:11:54,839 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 09:11:54,840 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 09:11:54,841 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 09:11:54,842 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 09:11:54,843 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 09:11:54,844 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 09:11:54,845 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 09:11:54,846 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 09:11:54,848 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 09:11:54,850 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 09:11:54,852 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 09:11:54,853 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 09:11:54,854 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 09:11:54,857 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-26 09:11:54,857 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-26 09:11:54,858 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-26 09:11:54,859 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-26 09:11:54,860 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-26 09:11:54,861 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-26 09:11:54,861 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-26 09:11:54,863 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-26 09:11:54,863 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-26 09:11:54,864 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-26 09:11:54,864 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-26 09:11:54,864 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-26 09:11:54,865 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-26 09:11:54,866 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-26 09:11:54,866 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf [2018-09-26 09:11:54,874 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 09:11:54,874 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 09:11:54,876 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 09:11:54,876 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-09-26 09:11:54,876 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 09:11:54,876 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:11:54,877 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 09:11:54,920 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 09:11:54,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 09:11:54,937 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 09:11:54,938 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 09:11:54,939 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 09:11:54,940 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/AnnoyingVillain.bpl [2018-09-26 09:11:54,940 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/AnnoyingVillain.bpl' [2018-09-26 09:11:54,988 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 09:11:54,991 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 09:11:54,992 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 09:11:54,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 09:11:54,993 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 09:11:55,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:11:54" (1/1) ... [2018-09-26 09:11:55,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:11:54" (1/1) ... [2018-09-26 09:11:55,034 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-26 09:11:55,034 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-26 09:11:55,035 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-26 09:11:55,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 09:11:55,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 09:11:55,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 09:11:55,039 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 09:11:55,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:11:54" (1/1) ... [2018-09-26 09:11:55,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:11:54" (1/1) ... [2018-09-26 09:11:55,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:11:54" (1/1) ... [2018-09-26 09:11:55,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:11:54" (1/1) ... [2018-09-26 09:11:55,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:11:54" (1/1) ... [2018-09-26 09:11:55,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:11:54" (1/1) ... [2018-09-26 09:11:55,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:11:54" (1/1) ... [2018-09-26 09:11:55,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 09:11:55,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 09:11:55,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 09:11:55,062 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 09:11:55,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:11:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-09-26 09:11:55,145 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-09-26 09:11:55,145 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-26 09:11:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-26 09:11:55,374 INFO L343 CfgBuilder]: Using library mode [2018-09-26 09:11:55,375 INFO L202 PluginConnector]: Adding new model AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:11:55 BoogieIcfgContainer [2018-09-26 09:11:55,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 09:11:55,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 09:11:55,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 09:11:55,380 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 09:11:55,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:11:54" (1/2) ... [2018-09-26 09:11:55,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe95d62 and model type AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:11:55, skipping insertion in model container [2018-09-26 09:11:55,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:11:55" (2/2) ... [2018-09-26 09:11:55,384 INFO L112 eAbstractionObserver]: Analyzing ICFG AnnoyingVillain.bpl [2018-09-26 09:11:55,394 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-09-26 09:11:55,403 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 09:11:55,451 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 09:11:55,452 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 09:11:55,453 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 09:11:55,453 INFO L383 AbstractCegarLoop]: Compute interpolants for PDR [2018-09-26 09:11:55,453 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 09:11:55,453 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 09:11:55,454 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 09:11:55,454 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 09:11:55,454 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 09:11:55,473 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-26 09:11:55,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-26 09:11:55,491 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:11:55,492 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-26 09:11:55,494 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:11:55,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:11:55,502 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:11:55,531 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:11:55,822 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:11:55,822 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 09:11:55,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-26 09:11:55,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-26 09:11:55,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-26 09:11:55,836 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-09-26 09:11:55,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:11:55,950 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2018-09-26 09:11:55,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-26 09:11:55,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2018-09-26 09:11:55,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:11:55,965 INFO L225 Difference]: With dead ends: 11 [2018-09-26 09:11:55,965 INFO L226 Difference]: Without dead ends: 5 [2018-09-26 09:11:55,969 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-26 09:11:55,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-09-26 09:11:56,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-09-26 09:11:56,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-09-26 09:11:56,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-09-26 09:11:56,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-09-26 09:11:56,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:11:56,006 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-09-26 09:11:56,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-26 09:11:56,007 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-09-26 09:11:56,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 09:11:56,007 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:11:56,007 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 09:11:56,008 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:11:56,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:11:56,008 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:11:56,029 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:11:57,150 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-09-26 09:11:57,503 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-09-26 09:11:58,410 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-09-26 09:11:59,023 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-09-26 09:11:59,559 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-09-26 09:12:00,174 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-09-26 09:12:01,054 WARN L178 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-09-26 09:12:01,903 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2018-09-26 09:12:03,682 WARN L178 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 112 [2018-09-26 09:12:04,934 WARN L178 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-09-26 09:12:09,500 WARN L178 SmtUtils]: Spent 3.64 s on a formula simplification that was a NOOP. DAG size: 124 [2018-09-26 09:12:11,521 WARN L178 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 130 [2018-09-26 09:12:14,098 WARN L178 SmtUtils]: Spent 1.74 s on a formula simplification that was a NOOP. DAG size: 136 [2018-09-26 09:12:18,649 WARN L178 SmtUtils]: Spent 3.60 s on a formula simplification that was a NOOP. DAG size: 142 [2018-09-26 09:12:21,886 WARN L178 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 148 [2018-09-26 09:12:25,280 WARN L178 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 154 [2018-09-26 09:12:33,961 WARN L178 SmtUtils]: Spent 6.32 s on a formula simplification that was a NOOP. DAG size: 160 [2018-09-26 09:12:42,339 WARN L178 SmtUtils]: Spent 3.55 s on a formula simplification that was a NOOP. DAG size: 166 [2018-09-26 09:12:52,858 WARN L178 SmtUtils]: Spent 9.04 s on a formula simplification that was a NOOP. DAG size: 172 [2018-09-26 09:12:59,945 WARN L178 SmtUtils]: Spent 5.45 s on a formula simplification that was a NOOP. DAG size: 178 [2018-09-26 09:13:28,205 WARN L178 SmtUtils]: Spent 26.31 s on a formula simplification that was a NOOP. DAG size: 184 [2018-09-26 09:14:03,069 WARN L178 SmtUtils]: Spent 31.01 s on a formula simplification that was a NOOP. DAG size: 190 [2018-09-26 09:14:13,066 WARN L178 SmtUtils]: Spent 7.41 s on a formula simplification that was a NOOP. DAG size: 196 [2018-09-26 09:14:31,758 WARN L178 SmtUtils]: Spent 15.87 s on a formula simplification that was a NOOP. DAG size: 202 [2018-09-26 09:15:09,129 WARN L178 SmtUtils]: Spent 33.51 s on a formula simplification that was a NOOP. DAG size: 208 [2018-09-26 09:15:24,035 WARN L178 SmtUtils]: Spent 11.68 s on a formula simplification that was a NOOP. DAG size: 214 [2018-09-26 09:15:51,698 WARN L178 SmtUtils]: Spent 23.98 s on a formula simplification that was a NOOP. DAG size: 220 [2018-09-26 09:16:35,678 WARN L178 SmtUtils]: Spent 36.24 s on a formula simplification that was a NOOP. DAG size: 226 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown