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/20170304-DifficultPathPrograms/sum01.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ff8eab6 [2018-09-26 09:45:24,836 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 09:45:24,840 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 09:45:24,854 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 09:45:24,854 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 09:45:24,856 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 09:45:24,857 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 09:45:24,859 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 09:45:24,861 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 09:45:24,862 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 09:45:24,863 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 09:45:24,863 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 09:45:24,864 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 09:45:24,865 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 09:45:24,866 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 09:45:24,867 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 09:45:24,868 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 09:45:24,870 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 09:45:24,872 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 09:45:24,874 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 09:45:24,875 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 09:45:24,876 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 09:45:24,879 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-26 09:45:24,880 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-26 09:45:24,880 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-26 09:45:24,881 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-26 09:45:24,882 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-26 09:45:24,883 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-26 09:45:24,884 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-26 09:45:24,885 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-26 09:45:24,886 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-26 09:45:24,887 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-26 09:45:24,887 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-26 09:45:24,887 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-26 09:45:24,888 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-26 09:45:24,889 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-26 09:45:24,890 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 09:45:24,898 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 09:45:24,899 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 09:45:24,900 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-26 09:45:24,900 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-09-26 09:45:24,901 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 09:45:24,901 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-09-26 09:45:24,901 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-09-26 09:45:24,901 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 09:45:24,953 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 09:45:24,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 09:45:24,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 09:45:24,983 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 09:45:24,984 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 09:45:24,985 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/sum01.i_3.bpl [2018-09-26 09:45:24,985 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/sum01.i_3.bpl' [2018-09-26 09:45:25,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 09:45:25,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 09:45:25,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 09:45:25,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 09:45:25,048 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 09:45:25,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum01.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:25" (1/1) ... [2018-09-26 09:45:25,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum01.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:25" (1/1) ... [2018-09-26 09:45:25,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 09:45:25,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 09:45:25,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 09:45:25,093 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 09:45:25,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum01.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:25" (1/1) ... [2018-09-26 09:45:25,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum01.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:25" (1/1) ... [2018-09-26 09:45:25,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum01.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:25" (1/1) ... [2018-09-26 09:45:25,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum01.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:25" (1/1) ... [2018-09-26 09:45:25,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum01.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:25" (1/1) ... [2018-09-26 09:45:25,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum01.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:25" (1/1) ... [2018-09-26 09:45:25,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum01.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:25" (1/1) ... [2018-09-26 09:45:25,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 09:45:25,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 09:45:25,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 09:45:25,119 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 09:45:25,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum01.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:25" (1/1) ... [2018-09-26 09:45:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-26 09:45:25,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-26 09:45:25,401 INFO L346 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-26 09:45:25,402 INFO L202 PluginConnector]: Adding new model sum01.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:45:25 BoogieIcfgContainer [2018-09-26 09:45:25,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 09:45:25,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 09:45:25,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 09:45:25,408 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 09:45:25,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum01.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:25" (1/2) ... [2018-09-26 09:45:25,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a344f51 and model type sum01.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:45:25, skipping insertion in model container [2018-09-26 09:45:25,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum01.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:45:25" (2/2) ... [2018-09-26 09:45:25,413 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01.i_3.bpl [2018-09-26 09:45:25,426 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-09-26 09:45:25,435 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 09:45:25,492 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 09:45:25,493 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 09:45:25,493 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 09:45:25,493 INFO L383 AbstractCegarLoop]: Compute interpolants for PDR [2018-09-26 09:45:25,493 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 09:45:25,494 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 09:45:25,494 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 09:45:25,495 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 09:45:25,497 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 09:45:25,520 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-26 09:45:25,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 09:45:25,530 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:45:25,531 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 09:45:25,532 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:45:25,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:45:25,541 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-09-26 09:45:25,548 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:45:25,705 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:45:25,706 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 09:45:25,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 09:45:25,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 09:45:25,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-26 09:45:25,724 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-09-26 09:45:25,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:45:25,759 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-09-26 09:45:25,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 09:45:25,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-09-26 09:45:25,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:45:25,779 INFO L225 Difference]: With dead ends: 10 [2018-09-26 09:45:25,779 INFO L226 Difference]: Without dead ends: 7 [2018-09-26 09:45:25,788 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-26 09:45:25,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-26 09:45:25,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-26 09:45:25,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-26 09:45:25,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-26 09:45:25,840 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-09-26 09:45:25,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:45:25,841 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-26 09:45:25,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 09:45:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-26 09:45:25,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-26 09:45:25,842 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:45:25,842 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-09-26 09:45:25,843 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:45:25,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:45:25,844 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-09-26 09:45:25,844 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:45:30,206 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-09-26 09:45:31,153 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-09-26 09:45:32,133 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-09-26 09:45:33,295 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-09-26 09:45:34,578 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2018-09-26 09:45:35,954 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2018-09-26 09:45:37,561 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2018-09-26 09:45:39,269 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2018-09-26 09:45:41,167 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2018-09-26 09:45:43,218 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2018-09-26 09:45:45,312 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2018-09-26 09:45:47,732 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2018-09-26 09:45:50,099 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 325 [2018-09-26 09:45:52,680 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2018-09-26 09:45:55,334 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2018-09-26 09:45:58,113 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2018-09-26 09:46:01,037 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2018-09-26 09:46:03,992 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 392 [2018-09-26 09:46:07,204 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2018-09-26 09:46:11,286 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 419 [2018-09-26 09:46:15,896 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 433 [2018-09-26 09:46:20,799 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 446 [2018-09-26 09:46:25,490 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 460 [2018-09-26 09:46:30,551 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 473 [2018-09-26 09:46:36,070 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 487 [2018-09-26 09:46:42,013 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 500 [2018-09-26 09:46:48,842 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 514 [2018-09-26 09:46:55,588 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 527 [2018-09-26 09:47:03,054 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 541 [2018-09-26 09:47:10,989 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2018-09-26 09:47:19,417 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2018-09-26 09:47:28,749 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 581 [2018-09-26 09:47:38,596 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 595 [2018-09-26 09:47:49,119 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 608 [2018-09-26 09:48:00,250 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 622 [2018-09-26 09:48:12,112 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 635 [2018-09-26 09:48:24,705 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 649 [2018-09-26 09:48:37,965 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 662 [2018-09-26 09:48:52,308 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 676 [2018-09-26 09:49:07,432 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 689 [2018-09-26 09:49:23,478 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 703 [2018-09-26 09:49:40,964 WARN L178 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 716 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown