java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/SifaC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --sifa.abstract.domain ExplicitValueDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid NeverFluid --sifa.intern.fluid NeverFluid --sifa.simplification.technique SIMPLIFY_DDA -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-19 21:46:39,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-19 21:46:39,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-19 21:46:39,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-19 21:46:39,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-19 21:46:39,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-19 21:46:39,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-19 21:46:39,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-19 21:46:39,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-19 21:46:39,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-19 21:46:39,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-19 21:46:39,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-19 21:46:39,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-19 21:46:39,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-19 21:46:39,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-19 21:46:39,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-19 21:46:39,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-19 21:46:39,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-19 21:46:39,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-19 21:46:39,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-19 21:46:39,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-19 21:46:39,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-19 21:46:39,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-19 21:46:39,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-19 21:46:39,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-19 21:46:39,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-19 21:46:39,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-19 21:46:39,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-19 21:46:39,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-19 21:46:39,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-19 21:46:39,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-19 21:46:39,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-19 21:46:39,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-19 21:46:39,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-19 21:46:39,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-19 21:46:39,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-19 21:46:39,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-19 21:46:39,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-19 21:46:39,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-19 21:46:39,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-19 21:46:39,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-19 21:46:39,299 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-19 21:46:39,315 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-19 21:46:39,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-19 21:46:39,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-19 21:46:39,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-19 21:46:39,320 INFO L138 SettingsManager]: * Use SBE=true [2019-09-19 21:46:39,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-19 21:46:39,321 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-19 21:46:39,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-19 21:46:39,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-19 21:46:39,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-19 21:46:39,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-19 21:46:39,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-19 21:46:39,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-19 21:46:39,322 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-19 21:46:39,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-19 21:46:39,322 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-19 21:46:39,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-19 21:46:39,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-19 21:46:39,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-19 21:46:39,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-19 21:46:39,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-19 21:46:39,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-19 21:46:39,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-19 21:46:39,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-19 21:46:39,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-19 21:46:39,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-19 21:46:39,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-19 21:46:39,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-19 21:46:39,326 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> ExplicitValueDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> NeverFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Intern Fluid -> NeverFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_DDA [2019-09-19 21:46:39,381 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-19 21:46:39,393 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-19 21:46:39,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-19 21:46:39,398 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-19 21:46:39,399 INFO L275 PluginConnector]: CDTParser initialized [2019-09-19 21:46:39,399 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+sep-reducer.c [2019-09-19 21:46:39,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7801e3b2/92d085727d1b41f4a7c3ea2de30f185b/FLAG09f455de2 [2019-09-19 21:46:39,871 INFO L306 CDTParser]: Found 1 translation units. [2019-09-19 21:46:39,871 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+sep-reducer.c [2019-09-19 21:46:39,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7801e3b2/92d085727d1b41f4a7c3ea2de30f185b/FLAG09f455de2 [2019-09-19 21:46:40,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7801e3b2/92d085727d1b41f4a7c3ea2de30f185b [2019-09-19 21:46:40,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-19 21:46:40,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-19 21:46:40,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-19 21:46:40,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-19 21:46:40,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-19 21:46:40,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 09:46:40" (1/1) ... [2019-09-19 21:46:40,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4907dd24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 09:46:40, skipping insertion in model container [2019-09-19 21:46:40,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 09:46:40" (1/1) ... [2019-09-19 21:46:40,335 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-19 21:46:40,358 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-19 21:46:40,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-19 21:46:40,638 INFO L188 MainTranslator]: Completed pre-run [2019-09-19 21:46:40,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-19 21:46:40,822 INFO L192 MainTranslator]: Completed translation [2019-09-19 21:46:40,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 09:46:40 WrapperNode [2019-09-19 21:46:40,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-19 21:46:40,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-19 21:46:40,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-19 21:46:40,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-19 21:46:40,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 09:46:40" (1/1) ... [2019-09-19 21:46:40,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 09:46:40" (1/1) ... [2019-09-19 21:46:40,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 09:46:40" (1/1) ... [2019-09-19 21:46:40,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 09:46:40" (1/1) ... [2019-09-19 21:46:40,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 09:46:40" (1/1) ... [2019-09-19 21:46:40,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 09:46:40" (1/1) ... [2019-09-19 21:46:40,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 09:46:40" (1/1) ... [2019-09-19 21:46:40,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-19 21:46:40,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-19 21:46:40,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-19 21:46:40,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-19 21:46:40,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 09:46:40" (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 [2019-09-19 21:46:40,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-19 21:46:40,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-19 21:46:40,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-19 21:46:40,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-19 21:46:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-19 21:46:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-19 21:46:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-19 21:46:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-19 21:46:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-19 21:46:41,243 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-19 21:46:41,244 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-19 21:46:41,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 09:46:41 BoogieIcfgContainer [2019-09-19 21:46:41,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-19 21:46:41,246 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-09-19 21:46:41,246 INFO L271 PluginConnector]: Initializing Sifa... [2019-09-19 21:46:41,247 INFO L275 PluginConnector]: Sifa initialized [2019-09-19 21:46:41,249 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 09:46:41" (1/1) ... [2019-09-19 21:46:41,249 INFO L79 SifaObserver]: Intern domains=ExplicitValueDomain;IntervalDomain ♦ Abstract Domain=ExplicitValueDomain ♦ Abstract when formula's dag size exceeds (negative numbers disable this limit)=-1 ♦ Fluid=NeverFluid ♦ Max. Parallel Explicit Values=2 ♦ Max. Parallel Intervals=2 ♦ Loop Summarizer=FixpointLoopSummarizer ♦ Abstract when formula has more disjuncts than (negative numbers disable this limit)=8 ♦ Call Summarizer=TopInputCallSummarizer ♦ Xnf Conversion Technique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION ♦ Simplification Technique=SIMPLIFY_DDA ♦ Intern Fluid=NeverFluid [2019-09-19 21:46:41,303 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-09-19 21:46:41,303 INFO L169 IcfgInterpreter]: Building call graph [2019-09-19 21:46:41,328 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-09-19 21:46:41,343 INFO L179 IcfgInterpreter]: Starting interpretation [2019-09-19 21:46:41,345 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-09-19 21:46:41,535 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2019-09-19 21:46:42,060 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2019-09-19 21:46:42,243 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2019-09-19 21:46:43,022 WARN L191 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 1 [2019-09-19 21:46:50,861 WARN L191 SmtUtils]: Spent 7.84 s on a formula simplification. DAG size of input: 125 DAG size of output: 1 [2019-09-19 21:46:57,703 WARN L191 SmtUtils]: Spent 6.82 s on a formula simplification. DAG size of input: 119 DAG size of output: 97 [2019-09-19 21:46:57,933 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-19 21:47:01,477 WARN L191 SmtUtils]: Spent 3.53 s on a formula simplification. DAG size of input: 121 DAG size of output: 105 [2019-09-19 21:47:01,710 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-19 21:47:27,236 WARN L191 SmtUtils]: Spent 25.52 s on a formula simplification. DAG size of input: 134 DAG size of output: 130 [2019-09-19 21:47:43,010 WARN L191 SmtUtils]: Spent 15.77 s on a formula simplification that was a NOOP. DAG size: 130 [2019-09-19 21:47:59,651 WARN L191 SmtUtils]: Spent 16.64 s on a formula simplification that was a NOOP. DAG size: 132 [2019-09-19 21:48:17,119 WARN L191 SmtUtils]: Spent 17.47 s on a formula simplification that was a NOOP. DAG size: 132 [2019-09-19 21:48:49,494 WARN L191 SmtUtils]: Spent 32.36 s on a formula simplification. DAG size of input: 134 DAG size of output: 132 [2019-09-19 21:49:02,076 WARN L191 SmtUtils]: Spent 12.58 s on a formula simplification that was a NOOP. DAG size: 132 [2019-09-19 21:50:53,592 WARN L191 SmtUtils]: Spent 1.79 m on a formula simplification. DAG size of input: 207 DAG size of output: 144 [2019-09-19 21:51:29,739 WARN L191 SmtUtils]: Spent 36.15 s on a formula simplification that was a NOOP. DAG size: 144 [2019-09-19 21:51:43,968 WARN L191 SmtUtils]: Spent 14.19 s on a formula simplification. DAG size of input: 150 DAG size of output: 1 [2019-09-19 21:51:57,371 WARN L191 SmtUtils]: Spent 13.39 s on a formula simplification. DAG size of input: 159 DAG size of output: 1 [2019-09-19 21:52:52,224 WARN L191 SmtUtils]: Spent 54.85 s on a formula simplification. DAG size of input: 217 DAG size of output: 1 [2019-09-19 21:58:53,895 WARN L191 SmtUtils]: Spent 6.03 m on a formula simplification. DAG size of input: 204 DAG size of output: 169 [2019-09-19 22:00:08,320 WARN L191 SmtUtils]: Spent 1.24 m on a formula simplification. DAG size of input: 169 DAG size of output: 169