/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/SifaCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loop-new/gauss_sum.i.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 16:35:37,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 16:35:37,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 16:35:37,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 16:35:37,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 16:35:37,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 16:35:37,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 16:35:37,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 16:35:37,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 16:35:37,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 16:35:37,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 16:35:37,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 16:35:37,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 16:35:37,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 16:35:37,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 16:35:37,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 16:35:37,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 16:35:37,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 16:35:37,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 16:35:37,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 16:35:37,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 16:35:37,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 16:35:37,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 16:35:37,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 16:35:37,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 16:35:37,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 16:35:37,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 16:35:37,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 16:35:37,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 16:35:37,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 16:35:37,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 16:35:37,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 16:35:37,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 16:35:37,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 16:35:37,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 16:35:37,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 16:35:37,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 16:35:37,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 16:35:37,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 16:35:37,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 16:35:37,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 16:35:37,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 16:35:37,405 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 16:35:37,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 16:35:37,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 16:35:37,407 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 16:35:37,407 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 16:35:37,408 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 16:35:37,408 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 16:35:37,408 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 16:35:37,408 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 16:35:37,408 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 16:35:37,409 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 16:35:37,410 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 16:35:37,410 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 16:35:37,410 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 16:35:37,411 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 16:35:37,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 16:35:37,412 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 16:35:37,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 16:35:37,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 16:35:37,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 16:35:37,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 16:35:37,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 16:35:37,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 16:35:37,414 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 16:35:37,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 16:35:37,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 16:35:37,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 16:35:37,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 16:35:37,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 16:35:37,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 16:35:37,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 16:35:37,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 16:35:37,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 16:35:37,417 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 16:35:37,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 16:35:37,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 16:35:37,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 16:35:37,418 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 16:35:37,712 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 16:35:37,734 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 16:35:37,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 16:35:37,740 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 16:35:37,741 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 16:35:37,741 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum.i.p+cfa-reducer.c [2019-11-24 16:35:37,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155e5251c/8d151805a2a0459590464b323ca54d0f/FLAG4083201ba [2019-11-24 16:35:38,241 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 16:35:38,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i.p+cfa-reducer.c [2019-11-24 16:35:38,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155e5251c/8d151805a2a0459590464b323ca54d0f/FLAG4083201ba [2019-11-24 16:35:38,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155e5251c/8d151805a2a0459590464b323ca54d0f [2019-11-24 16:35:38,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 16:35:38,651 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 16:35:38,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 16:35:38,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 16:35:38,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 16:35:38,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:35:38" (1/1) ... [2019-11-24 16:35:38,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38caefbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:38, skipping insertion in model container [2019-11-24 16:35:38,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:35:38" (1/1) ... [2019-11-24 16:35:38,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 16:35:38,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 16:35:38,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 16:35:38,858 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 16:35:38,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 16:35:38,892 INFO L208 MainTranslator]: Completed translation [2019-11-24 16:35:38,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:38 WrapperNode [2019-11-24 16:35:38,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 16:35:38,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 16:35:38,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 16:35:38,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 16:35:38,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:38" (1/1) ... [2019-11-24 16:35:38,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:38" (1/1) ... [2019-11-24 16:35:39,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 16:35:39,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 16:35:39,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 16:35:39,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 16:35:39,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:38" (1/1) ... [2019-11-24 16:35:39,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:38" (1/1) ... [2019-11-24 16:35:39,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:38" (1/1) ... [2019-11-24 16:35:39,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:38" (1/1) ... [2019-11-24 16:35:39,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:38" (1/1) ... [2019-11-24 16:35:39,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:38" (1/1) ... [2019-11-24 16:35:39,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:38" (1/1) ... [2019-11-24 16:35:39,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 16:35:39,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 16:35:39,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 16:35:39,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 16:35:39,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:38" (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:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 16:35:39,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 16:35:39,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 16:35:39,405 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 16:35:39,406 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-24 16:35:39,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:35:39 BoogieIcfgContainer [2019-11-24 16:35:39,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 16:35:39,408 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-11-24 16:35:39,409 INFO L271 PluginConnector]: Initializing Sifa... [2019-11-24 16:35:39,409 INFO L275 PluginConnector]: Sifa initialized [2019-11-24 16:35:39,411 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:35:39" (1/1) ... [2019-11-24 16:35:39,412 INFO L79 SifaObserver]: LogSizeWrapperFluid Intern Fluid=SizeLimitFluid ♦ Abstract Domain=CompoundDomain ♦ Fluid=SizeLimitFluid ♦ Max. Parallel Explicit Values=2 ♦ Max. Parallel Intervals=2 ♦ Loop Summarizer=FixpointLoopSummarizer ♦ CompoundDomain Intern Domains=ExplicitValueDomain;IntervalDomain ♦ Call Summarizer=TopInputCallSummarizer ♦ Xnf Conversion Technique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION ♦ SizeLimitFluid Max. Disjunctions=8 ♦ Simplification Technique=SIMPLIFY_QUICK ♦ SizeLimitFluid Max. DAG Size=-1 [2019-11-24 16:35:39,443 INFO L159 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-11-24 16:35:39,444 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 16:35:39,454 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 16:35:39,462 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 16:35:39,468 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 16:35:40,846 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 250 [2019-11-24 16:35:41,018 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 248 [2019-11-24 16:35:41,243 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 318 [2019-11-24 16:35:41,503 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 304 [2019-11-24 16:35:41,797 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 399 DAG size of output: 390 [2019-11-24 16:35:42,213 WARN L192 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 384 DAG size of output: 383 [2019-11-24 16:35:42,655 WARN L192 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 503 DAG size of output: 498 [2019-11-24 16:35:43,212 WARN L192 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 495 DAG size of output: 492 [2019-11-24 16:35:43,827 WARN L192 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 701 DAG size of output: 690 [2019-11-24 16:35:44,579 WARN L192 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 691 DAG size of output: 690 [2019-11-24 16:35:45,562 WARN L192 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 899 DAG size of output: 890 [2019-11-24 16:35:46,838 WARN L192 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 886 DAG size of output: 885 [2019-11-24 16:35:48,533 WARN L192 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 1151 DAG size of output: 1143 [2019-11-24 16:35:50,504 WARN L192 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 1138 DAG size of output: 1071 [2019-11-24 16:35:52,191 WARN L192 SmtUtils]: Spent 1.49 s on a formula simplification that was a NOOP. DAG size: 1028 [2019-11-24 16:35:53,763 WARN L192 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 1029 DAG size of output: 1029 [2019-11-24 16:35:56,392 WARN L192 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 1352 DAG size of output: 1351 [2019-11-24 16:35:59,707 WARN L192 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 1347 DAG size of output: 1342 [2019-11-24 16:36:02,674 WARN L192 SmtUtils]: Spent 2.73 s on a formula simplification that was a NOOP. DAG size: 1346 [2019-11-24 16:36:05,314 WARN L192 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 1347 DAG size of output: 1347 [2019-11-24 16:36:09,956 WARN L192 SmtUtils]: Spent 4.54 s on a formula simplification. DAG size of input: 1746 DAG size of output: 1744 [2019-11-24 16:36:14,676 WARN L192 SmtUtils]: Spent 4.55 s on a formula simplification. DAG size of input: 1745 DAG size of output: 1742 [2019-11-24 16:36:22,849 WARN L192 SmtUtils]: Spent 8.03 s on a formula simplification. DAG size of input: 2304 DAG size of output: 2303 [2019-11-24 16:36:31,590 WARN L192 SmtUtils]: Spent 8.54 s on a formula simplification. DAG size of input: 2303 DAG size of output: 2302 [2019-11-24 16:36:45,527 WARN L192 SmtUtils]: Spent 13.81 s on a formula simplification. DAG size of input: 2917 DAG size of output: 2912 [2019-11-24 16:37:01,029 WARN L192 SmtUtils]: Spent 15.07 s on a formula simplification. DAG size of input: 2912 DAG size of output: 2903 [2019-11-24 16:37:16,610 WARN L192 SmtUtils]: Spent 14.76 s on a formula simplification that was a NOOP. DAG size: 2901