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/count_by_2.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ff8eab6 [2018-09-26 09:35:33,105 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 09:35:33,108 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 09:35:33,119 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 09:35:33,120 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 09:35:33,121 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 09:35:33,122 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 09:35:33,124 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 09:35:33,126 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 09:35:33,127 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 09:35:33,127 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 09:35:33,128 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 09:35:33,129 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 09:35:33,130 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 09:35:33,131 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 09:35:33,132 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 09:35:33,133 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 09:35:33,135 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 09:35:33,137 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 09:35:33,138 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 09:35:33,140 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 09:35:33,141 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 09:35:33,144 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-26 09:35:33,144 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-26 09:35:33,144 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-26 09:35:33,145 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-26 09:35:33,146 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-26 09:35:33,147 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-26 09:35:33,148 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-26 09:35:33,149 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-26 09:35:33,150 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-26 09:35:33,150 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-26 09:35:33,151 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-26 09:35:33,151 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-26 09:35:33,152 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-26 09:35:33,153 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-26 09:35:33,153 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 09:35:33,161 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 09:35:33,162 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 09:35:33,163 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-26 09:35:33,163 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-09-26 09:35:33,164 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 09:35:33,164 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-09-26 09:35:33,164 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-09-26 09:35:33,165 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 09:35:33,223 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 09:35:33,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 09:35:33,239 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 09:35:33,242 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 09:35:33,242 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 09:35:33,243 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_2.i_3.bpl [2018-09-26 09:35:33,243 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_2.i_3.bpl' [2018-09-26 09:35:33,294 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 09:35:33,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 09:35:33,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 09:35:33,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 09:35:33,299 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 09:35:33,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:33" (1/1) ... [2018-09-26 09:35:33,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:33" (1/1) ... [2018-09-26 09:35:33,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 09:35:33,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 09:35:33,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 09:35:33,340 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 09:35:33,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:33" (1/1) ... [2018-09-26 09:35:33,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:33" (1/1) ... [2018-09-26 09:35:33,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:33" (1/1) ... [2018-09-26 09:35:33,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:33" (1/1) ... [2018-09-26 09:35:33,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:33" (1/1) ... [2018-09-26 09:35:33,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:33" (1/1) ... [2018-09-26 09:35:33,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:33" (1/1) ... [2018-09-26 09:35:33,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 09:35:33,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 09:35:33,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 09:35:33,362 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 09:35:33,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:33" (1/1) ... [2018-09-26 09:35:33,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-26 09:35:33,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-26 09:35:33,588 INFO L346 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-26 09:35:33,588 INFO L202 PluginConnector]: Adding new model count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:35:33 BoogieIcfgContainer [2018-09-26 09:35:33,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 09:35:33,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 09:35:33,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 09:35:33,594 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 09:35:33,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:33" (1/2) ... [2018-09-26 09:35:33,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7731f83f and model type count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:35:33, skipping insertion in model container [2018-09-26 09:35:33,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:35:33" (2/2) ... [2018-09-26 09:35:33,599 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_2.i_3.bpl [2018-09-26 09:35:33,610 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-09-26 09:35:33,618 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 09:35:33,668 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 09:35:33,669 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 09:35:33,669 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 09:35:33,669 INFO L383 AbstractCegarLoop]: Compute interpolants for PDR [2018-09-26 09:35:33,670 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 09:35:33,670 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 09:35:33,670 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 09:35:33,670 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 09:35:33,671 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 09:35:33,687 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-26 09:35:33,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 09:35:33,696 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:35:33,698 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 09:35:33,699 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:35:33,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:35:33,710 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-09-26 09:35:33,720 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:35:33,833 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:35:33,834 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 09:35:33,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 09:35:33,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 09:35:33,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-26 09:35:33,848 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-09-26 09:35:33,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:35:33,876 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-09-26 09:35:33,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 09:35:33,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-09-26 09:35:33,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:35:33,889 INFO L225 Difference]: With dead ends: 10 [2018-09-26 09:35:33,889 INFO L226 Difference]: Without dead ends: 7 [2018-09-26 09:35:33,893 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 09:35:33,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-26 09:35:33,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-26 09:35:33,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-26 09:35:33,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-26 09:35:33,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-09-26 09:35:33,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:35:33,934 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-26 09:35:33,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 09:35:33,935 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-26 09:35:33,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-26 09:35:33,935 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:35:33,936 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-09-26 09:35:33,936 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:35:33,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:35:33,937 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-09-26 09:35:33,937 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:35:57,056 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2018-09-26 09:36:02,038 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2018-09-26 09:36:05,211 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2018-09-26 09:36:08,694 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2018-09-26 09:36:12,242 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2018-09-26 09:36:16,053 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 351 [2018-09-26 09:36:27,143 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 381 [2018-09-26 09:36:31,444 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2018-09-26 09:36:36,042 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 401 [2018-09-26 09:36:40,912 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2018-09-26 09:36:46,099 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2018-09-26 09:36:51,643 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2018-09-26 09:36:57,631 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2018-09-26 09:37:04,140 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 451 [2018-09-26 09:37:10,859 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 461 [2018-09-26 09:37:18,134 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 471 [2018-09-26 09:37:26,052 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 481 [2018-09-26 09:37:34,141 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 491 [2018-09-26 09:37:42,855 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 501 [2018-09-26 09:37:52,041 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 511 [2018-09-26 09:38:01,690 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 521 [2018-09-26 09:38:12,064 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 531 [2018-09-26 09:38:22,947 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 541 [2018-09-26 09:38:34,426 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 551 [2018-09-26 09:38:46,799 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 561 [2018-09-26 09:38:59,825 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 571 [2018-09-26 09:39:13,115 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 581 [2018-09-26 09:39:27,284 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 591 [2018-09-26 09:39:42,166 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 601 [2018-09-26 09:39:57,617 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 611 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown