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-z3.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/sum04.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 14:17:27,765 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 14:17:27,767 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 14:17:27,786 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 14:17:27,786 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 14:17:27,788 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 14:17:27,789 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 14:17:27,794 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 14:17:27,804 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 14:17:27,806 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 14:17:27,808 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 14:17:27,808 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 14:17:27,809 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 14:17:27,811 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 14:17:27,813 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 14:17:27,814 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 14:17:27,815 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 14:17:27,816 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 14:17:27,818 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 14:17:27,820 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 14:17:27,821 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 14:17:27,823 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 14:17:27,826 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 14:17:27,826 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 14:17:27,826 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 14:17:27,827 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 14:17:27,828 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 14:17:27,829 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 14:17:27,830 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 14:17:27,831 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 14:17:27,831 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 14:17:27,832 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 14:17:27,832 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 14:17:27,832 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 14:17:27,833 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 14:17:27,834 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 14:17:27,834 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf [2018-07-25 14:17:27,848 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 14:17:27,849 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 14:17:27,850 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 14:17:27,851 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-25 14:17:27,851 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-25 14:17:27,851 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 14:17:27,851 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 14:17:27,905 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 14:17:27,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 14:17:27,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 14:17:27,927 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 14:17:27,927 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 14:17:27,928 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/sum04.i_3.bpl [2018-07-25 14:17:27,928 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/sum04.i_3.bpl' [2018-07-25 14:17:27,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 14:17:27,975 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 14:17:27,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 14:17:27,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 14:17:27,976 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 14:17:27,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum04.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:17:27" (1/1) ... [2018-07-25 14:17:28,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum04.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:17:27" (1/1) ... [2018-07-25 14:17:28,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 14:17:28,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 14:17:28,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 14:17:28,020 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 14:17:28,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum04.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:17:27" (1/1) ... [2018-07-25 14:17:28,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum04.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:17:27" (1/1) ... [2018-07-25 14:17:28,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum04.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:17:27" (1/1) ... [2018-07-25 14:17:28,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum04.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:17:27" (1/1) ... [2018-07-25 14:17:28,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum04.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:17:27" (1/1) ... [2018-07-25 14:17:28,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum04.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:17:27" (1/1) ... [2018-07-25 14:17:28,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum04.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:17:27" (1/1) ... [2018-07-25 14:17:28,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 14:17:28,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 14:17:28,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 14:17:28,048 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 14:17:28,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum04.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:17:27" (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 14:17:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 14:17:28,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 14:17:28,392 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 14:17:28,393 INFO L202 PluginConnector]: Adding new model sum04.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 02:17:28 BoogieIcfgContainer [2018-07-25 14:17:28,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 14:17:28,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 14:17:28,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 14:17:28,400 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 14:17:28,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum04.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:17:27" (1/2) ... [2018-07-25 14:17:28,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddfa61e and model type sum04.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 02:17:28, skipping insertion in model container [2018-07-25 14:17:28,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum04.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 02:17:28" (2/2) ... [2018-07-25 14:17:28,405 INFO L112 eAbstractionObserver]: Analyzing ICFG sum04.i_3.bpl [2018-07-25 14:17:28,416 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-25 14:17:28,425 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 14:17:28,476 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 14:17:28,477 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 14:17:28,477 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 14:17:28,478 INFO L376 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-25 14:17:28,478 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 14:17:28,478 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 14:17:28,478 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 14:17:28,479 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 14:17:28,479 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 14:17:28,496 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 14:17:28,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 14:17:28,507 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:17:28,507 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 14:17:28,509 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:17:28,514 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, 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 [2018-07-25 14:17:28,540 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:17:28,831 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:17:28,831 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 14:17:28,836 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 14:17:28,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 14:17:28,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 14:17:28,850 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-25 14:17:28,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:17:28,908 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-07-25 14:17:28,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 14:17:28,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-25 14:17:28,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:17:28,922 INFO L225 Difference]: With dead ends: 10 [2018-07-25 14:17:28,922 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 14:17:28,926 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 14:17:28,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 14:17:28,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 14:17:28,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 14:17:28,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 14:17:28,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 14:17:28,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:17:28,962 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 14:17:28,962 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 14:17:28,963 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 14:17:28,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 14:17:28,963 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:17:28,963 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 14:17:28,964 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:17:28,964 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, 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 [2018-07-25 14:17:28,975 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:17:29,470 WARN L169 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2018-07-25 14:17:30,475 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2018-07-25 14:17:31,892 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-07-25 14:17:33,124 WARN L169 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-07-25 14:17:34,958 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-07-25 14:17:35,686 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-07-25 14:17:36,512 WARN L169 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-07-25 14:17:37,456 WARN L169 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2018-07-25 14:17:38,573 WARN L169 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-07-25 14:17:39,686 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-07-25 14:17:41,102 WARN L169 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2018-07-25 14:17:42,512 WARN L169 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2018-07-25 14:17:44,080 WARN L169 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2018-07-25 14:17:45,990 WARN L169 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2018-07-25 14:17:48,103 WARN L169 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 275 [2018-07-25 14:17:50,185 WARN L169 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 288 [2018-07-25 14:17:52,408 WARN L169 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2018-07-25 14:17:54,936 WARN L169 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2018-07-25 14:17:57,656 WARN L169 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 325 [2018-07-25 14:18:00,588 WARN L169 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2018-07-25 14:18:03,831 WARN L169 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 350 [2018-07-25 14:18:07,401 WARN L169 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2018-07-25 14:18:11,677 WARN L169 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2018-07-25 14:18:15,063 WARN L169 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-07-25 14:18:16,966 WARN L169 SmtUtils]: Spent 944.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2018-07-25 14:18:21,308 WARN L169 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2018-07-25 14:18:24,720 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-07-25 14:18:26,228 WARN L169 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2018-07-25 14:18:31,357 WARN L169 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2018-07-25 14:18:36,590 WARN L169 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 438 [2018-07-25 14:18:42,450 WARN L169 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 450 [2018-07-25 14:18:48,613 WARN L169 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 463 [2018-07-25 14:18:55,271 WARN L169 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 475 [2018-07-25 14:19:02,363 WARN L169 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 488 [2018-07-25 14:19:10,170 WARN L169 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 500 [2018-07-25 14:19:18,306 WARN L169 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2018-07-25 14:19:27,332 WARN L169 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 525 [2018-07-25 14:19:36,136 WARN L169 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 538 [2018-07-25 14:19:45,687 WARN L169 SmtUtils]: Spent 623.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2018-07-25 14:19:55,644 WARN L169 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2018-07-25 14:20:06,422 WARN L169 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2018-07-25 14:20:17,628 WARN L169 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 588 [2018-07-25 14:20:29,427 WARN L169 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 600 [2018-07-25 14:20:41,869 WARN L169 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 613 [2018-07-25 14:20:54,920 WARN L169 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 625 [2018-07-25 14:21:08,886 WARN L169 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 638 [2018-07-25 14:21:23,385 WARN L169 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 650 [2018-07-25 14:21:38,774 WARN L169 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 663 [2018-07-25 14:21:54,902 WARN L169 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 675 [2018-07-25 14:22:11,674 WARN L169 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 688 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown