java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/bhmr2007.c.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 09:12:15,203 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 09:12:15,205 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 09:12:15,217 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 09:12:15,217 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 09:12:15,218 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 09:12:15,219 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 09:12:15,221 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 09:12:15,223 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 09:12:15,223 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 09:12:15,224 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 09:12:15,225 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 09:12:15,225 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 09:12:15,226 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 09:12:15,227 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 09:12:15,228 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 09:12:15,229 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 09:12:15,231 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 09:12:15,233 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 09:12:15,234 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 09:12:15,235 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 09:12:15,237 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 09:12:15,239 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 09:12:15,239 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 09:12:15,240 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 09:12:15,241 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 09:12:15,242 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 09:12:15,242 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 09:12:15,243 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 09:12:15,244 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 09:12:15,245 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 09:12:15,245 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 09:12:15,246 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 09:12:15,246 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 09:12:15,247 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 09:12:15,248 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 09:12:15,248 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr.epf [2018-07-25 09:12:15,256 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 09:12:15,257 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 09:12:15,258 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 09:12:15,258 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-25 09:12:15,258 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 09:12:15,259 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 09:12:15,302 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 09:12:15,322 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 09:12:15,327 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 09:12:15,329 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 09:12:15,330 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 09:12:15,330 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/bhmr2007.c.i_3.bpl [2018-07-25 09:12:15,331 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/bhmr2007.c.i_3.bpl' [2018-07-25 09:12:15,402 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 09:12:15,404 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 09:12:15,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 09:12:15,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 09:12:15,405 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 09:12:15,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bhmr2007.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:12:15" (1/1) ... [2018-07-25 09:12:15,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bhmr2007.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:12:15" (1/1) ... [2018-07-25 09:12:15,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 09:12:15,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 09:12:15,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 09:12:15,449 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 09:12:15,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bhmr2007.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:12:15" (1/1) ... [2018-07-25 09:12:15,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bhmr2007.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:12:15" (1/1) ... [2018-07-25 09:12:15,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bhmr2007.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:12:15" (1/1) ... [2018-07-25 09:12:15,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bhmr2007.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:12:15" (1/1) ... [2018-07-25 09:12:15,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bhmr2007.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:12:15" (1/1) ... [2018-07-25 09:12:15,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bhmr2007.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:12:15" (1/1) ... [2018-07-25 09:12:15,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bhmr2007.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:12:15" (1/1) ... [2018-07-25 09:12:15,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 09:12:15,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 09:12:15,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 09:12:15,469 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 09:12:15,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bhmr2007.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:12:15" (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 [2018-07-25 09:12:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 09:12:15,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 09:12:15,820 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 09:12:15,821 INFO L202 PluginConnector]: Adding new model bhmr2007.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 09:12:15 BoogieIcfgContainer [2018-07-25 09:12:15,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 09:12:15,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 09:12:15,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 09:12:15,826 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 09:12:15,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bhmr2007.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:12:15" (1/2) ... [2018-07-25 09:12:15,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c22b9f and model type bhmr2007.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 09:12:15, skipping insertion in model container [2018-07-25 09:12:15,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bhmr2007.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 09:12:15" (2/2) ... [2018-07-25 09:12:15,834 INFO L112 eAbstractionObserver]: Analyzing ICFG bhmr2007.c.i_3.bpl [2018-07-25 09:12:15,845 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-25 09:12:15,857 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 09:12:15,909 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 09:12:15,910 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 09:12:15,911 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 09:12:15,911 INFO L376 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-25 09:12:15,911 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 09:12:15,911 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 09:12:15,912 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 09:12:15,912 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 09:12:15,912 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 09:12:15,930 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 09:12:15,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 09:12:15,942 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:12:15,943 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 09:12:15,945 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:12:15,951 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-07-25 09:12:15,958 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:12:16,247 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:12:16,248 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 09:12:16,252 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 09:12:16,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 09:12:16,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 09:12:16,261 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-25 09:12:16,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:12:16,304 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-07-25 09:12:16,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 09:12:16,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-25 09:12:16,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:12:16,319 INFO L225 Difference]: With dead ends: 10 [2018-07-25 09:12:16,319 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 09:12:16,323 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 09:12:16,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 09:12:16,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 09:12:16,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 09:12:16,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 09:12:16,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 09:12:16,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:12:16,363 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 09:12:16,363 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 09:12:16,363 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 09:12:16,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 09:12:16,364 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:12:16,364 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 09:12:16,365 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:12:16,365 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-07-25 09:12:16,365 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:12:17,067 WARN L169 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2018-07-25 09:12:17,572 WARN L169 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-07-25 09:12:17,868 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2018-07-25 09:12:19,002 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2018-07-25 09:12:20,065 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-07-25 09:12:20,678 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-07-25 09:12:21,263 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-07-25 09:12:21,885 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2018-07-25 09:12:22,702 WARN L169 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-07-25 09:12:23,488 WARN L169 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-07-25 09:12:24,414 WARN L169 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-07-25 09:12:25,393 WARN L169 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2018-07-25 09:12:26,610 WARN L169 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-07-25 09:12:28,033 WARN L169 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-07-25 09:12:29,532 WARN L169 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-07-25 09:12:31,359 WARN L169 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-07-25 09:12:33,078 WARN L169 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2018-07-25 09:12:35,049 WARN L169 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2018-07-25 09:12:37,224 WARN L169 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2018-07-25 09:12:39,594 WARN L169 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2018-07-25 09:12:42,305 WARN L169 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2018-07-25 09:12:45,416 WARN L169 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2018-07-25 09:12:48,653 WARN L169 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2018-07-25 09:12:52,155 WARN L169 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2018-07-25 09:12:56,032 WARN L169 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2018-07-25 09:13:00,029 WARN L169 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2018-07-25 09:13:04,398 WARN L169 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2018-07-25 09:13:09,617 WARN L169 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2018-07-25 09:13:13,768 WARN L169 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2018-07-25 09:13:15,721 WARN L169 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 353 [2018-07-25 09:13:21,445 WARN L169 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2018-07-25 09:13:27,374 WARN L169 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2018-07-25 09:13:33,767 WARN L169 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2018-07-25 09:13:41,183 WARN L169 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2018-07-25 09:13:48,741 WARN L169 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2018-07-25 09:13:56,692 WARN L169 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 417 [2018-07-25 09:14:05,129 WARN L169 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2018-07-25 09:14:14,054 WARN L169 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 438 [2018-07-25 09:14:23,837 WARN L169 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 449 [2018-07-25 09:14:34,221 WARN L169 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 460 [2018-07-25 09:14:45,250 WARN L169 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 470 [2018-07-25 09:14:56,858 WARN L169 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 481 [2018-07-25 09:15:08,965 WARN L169 SmtUtils]: Spent 865.00 ms on a formula simplification that was a NOOP. DAG size: 492 [2018-07-25 09:15:21,735 WARN L169 SmtUtils]: Spent 901.00 ms on a formula simplification that was a NOOP. DAG size: 502 [2018-07-25 09:15:35,405 WARN L169 SmtUtils]: Spent 920.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2018-07-25 09:15:49,765 WARN L169 SmtUtils]: Spent 954.00 ms on a formula simplification that was a NOOP. DAG size: 524 [2018-07-25 09:16:04,830 WARN L169 SmtUtils]: Spent 988.00 ms on a formula simplification that was a NOOP. DAG size: 534 [2018-07-25 09:16:21,087 WARN L169 SmtUtils]: Spent 989.00 ms on a formula simplification that was a NOOP. DAG size: 545 [2018-07-25 09:16:38,254 WARN L169 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 556 [2018-07-25 09:16:56,087 WARN L169 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 566 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown