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/20170304-DifficultPathPrograms/jm2006_variant.c.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ff8eab6 [2018-09-26 08:51:30,432 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 08:51:30,434 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 08:51:30,451 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 08:51:30,451 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 08:51:30,452 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 08:51:30,453 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 08:51:30,455 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 08:51:30,457 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 08:51:30,457 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 08:51:30,458 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 08:51:30,459 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 08:51:30,460 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 08:51:30,461 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 08:51:30,462 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 08:51:30,462 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 08:51:30,463 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 08:51:30,465 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 08:51:30,467 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 08:51:30,468 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 08:51:30,470 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 08:51:30,471 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 08:51:30,473 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-26 08:51:30,474 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-26 08:51:30,474 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-26 08:51:30,475 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-26 08:51:30,476 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-26 08:51:30,477 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-26 08:51:30,477 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-26 08:51:30,479 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-26 08:51:30,479 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-26 08:51:30,480 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-26 08:51:30,480 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-26 08:51:30,480 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-26 08:51:30,481 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-26 08:51:30,482 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-26 08:51:30,482 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 08:51:30,495 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 08:51:30,495 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 08:51:30,499 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 08:51:30,500 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-09-26 08:51:30,500 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 08:51:30,500 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 08:51:30,500 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 08:51:30,544 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 08:51:30,563 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 08:51:30,568 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 08:51:30,569 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 08:51:30,570 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 08:51:30,571 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/jm2006_variant.c.i_3.bpl [2018-09-26 08:51:30,571 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/jm2006_variant.c.i_3.bpl' [2018-09-26 08:51:30,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 08:51:30,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 08:51:30,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 08:51:30,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 08:51:30,635 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 08:51:30,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "jm2006_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:51:30" (1/1) ... [2018-09-26 08:51:30,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "jm2006_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:51:30" (1/1) ... [2018-09-26 08:51:30,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 08:51:30,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 08:51:30,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 08:51:30,679 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 08:51:30,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "jm2006_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:51:30" (1/1) ... [2018-09-26 08:51:30,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "jm2006_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:51:30" (1/1) ... [2018-09-26 08:51:30,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "jm2006_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:51:30" (1/1) ... [2018-09-26 08:51:30,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "jm2006_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:51:30" (1/1) ... [2018-09-26 08:51:30,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "jm2006_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:51:30" (1/1) ... [2018-09-26 08:51:30,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "jm2006_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:51:30" (1/1) ... [2018-09-26 08:51:30,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "jm2006_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:51:30" (1/1) ... [2018-09-26 08:51:30,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 08:51:30,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 08:51:30,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 08:51:30,705 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 08:51:30,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "jm2006_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:51:30" (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 08:51:30,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-26 08:51:30,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-26 08:51:31,043 INFO L346 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-26 08:51:31,044 INFO L202 PluginConnector]: Adding new model jm2006_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 08:51:31 BoogieIcfgContainer [2018-09-26 08:51:31,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 08:51:31,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 08:51:31,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 08:51:31,050 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 08:51:31,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "jm2006_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:51:30" (1/2) ... [2018-09-26 08:51:31,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cda4468 and model type jm2006_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 08:51:31, skipping insertion in model container [2018-09-26 08:51:31,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "jm2006_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 08:51:31" (2/2) ... [2018-09-26 08:51:31,055 INFO L112 eAbstractionObserver]: Analyzing ICFG jm2006_variant.c.i_3.bpl [2018-09-26 08:51:31,065 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-09-26 08:51:31,079 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 08:51:31,125 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 08:51:31,126 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 08:51:31,126 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 08:51:31,126 INFO L383 AbstractCegarLoop]: Compute interpolants for PDR [2018-09-26 08:51:31,126 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 08:51:31,127 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 08:51:31,127 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 08:51:31,127 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 08:51:31,127 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 08:51:31,145 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-26 08:51:31,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 08:51:31,158 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:51:31,159 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 08:51:31,160 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:51:31,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:51:31,177 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 [2018-09-26 08:51:31,204 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:51:31,375 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-26 08:51:31,523 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 08:51:31,524 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 08:51:31,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 08:51:31,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 08:51:31,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-26 08:51:31,539 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-09-26 08:51:31,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:51:31,574 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-09-26 08:51:31,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 08:51:31,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-09-26 08:51:31,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:51:31,589 INFO L225 Difference]: With dead ends: 10 [2018-09-26 08:51:31,589 INFO L226 Difference]: Without dead ends: 7 [2018-09-26 08:51:31,593 INFO L605 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 [2018-09-26 08:51:31,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-26 08:51:31,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-26 08:51:31,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-26 08:51:31,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-26 08:51:31,630 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-09-26 08:51:31,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:51:31,630 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-26 08:51:31,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 08:51:31,631 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-26 08:51:31,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-26 08:51:31,631 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:51:31,632 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-09-26 08:51:31,632 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:51:31,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:51:31,632 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 [2018-09-26 08:51:31,648 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:51:32,296 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2018-09-26 08:51:33,509 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-09-26 08:51:34,657 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-09-26 08:51:35,836 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-09-26 08:51:36,739 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2018-09-26 08:51:37,327 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-09-26 08:51:38,134 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-09-26 08:51:38,831 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-09-26 08:51:39,587 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2018-09-26 08:51:40,577 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2018-09-26 08:51:41,538 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-09-26 08:51:42,988 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-09-26 08:51:44,173 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-09-26 08:51:45,499 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2018-09-26 08:51:47,048 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2018-09-26 08:51:48,675 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2018-09-26 08:51:50,484 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2018-09-26 08:51:52,391 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2018-09-26 08:51:54,480 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 290 [2018-09-26 08:51:56,824 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2018-09-26 08:51:59,401 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2018-09-26 08:52:02,131 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2018-09-26 08:52:05,232 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2018-09-26 08:52:08,940 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 345 [2018-09-26 08:52:12,013 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2018-09-26 08:52:13,572 WARN L178 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 356 [2018-09-26 08:52:17,663 WARN L178 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2018-09-26 08:52:21,819 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 378 [2018-09-26 08:52:26,219 WARN L178 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 389 [2018-09-26 08:52:30,895 WARN L178 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2018-09-26 08:52:36,006 WARN L178 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2018-09-26 08:52:41,627 WARN L178 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2018-09-26 08:52:47,306 WARN L178 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 433 [2018-09-26 08:52:53,739 WARN L178 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2018-09-26 08:53:00,443 WARN L178 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2018-09-26 08:53:07,447 WARN L178 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2018-09-26 08:53:14,955 WARN L178 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 477 [2018-09-26 08:53:23,081 WARN L178 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 488 [2018-09-26 08:53:31,423 WARN L178 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 499 [2018-09-26 08:53:40,301 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 510 [2018-09-26 08:53:49,695 WARN L178 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 521 [2018-09-26 08:54:00,096 WARN L178 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 532 [2018-09-26 08:54:10,677 WARN L178 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 543 [2018-09-26 08:54:21,893 WARN L178 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2018-09-26 08:54:33,732 WARN L178 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2018-09-26 08:54:45,976 WARN L178 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2018-09-26 08:54:58,793 WARN L178 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 587 [2018-09-26 08:55:12,236 WARN L178 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 598 [2018-09-26 08:55:26,389 WARN L178 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 609 [2018-09-26 08:55:41,423 WARN L178 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 620 [2018-09-26 08:55:56,877 WARN L178 SmtUtils]: Spent 876.00 ms on a formula simplification that was a NOOP. DAG size: 631 [2018-09-26 08:56:13,091 WARN L178 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 642 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown