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 CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.intern.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_DDA -i ../../../trunk/examples/svcomp/array-tiling/mbpr4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 17:23:31,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 17:23:31,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 17:23:31,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 17:23:31,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 17:23:31,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 17:23:31,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 17:23:31,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 17:23:31,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 17:23:31,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 17:23:31,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 17:23:31,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 17:23:31,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 17:23:31,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 17:23:31,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 17:23:31,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 17:23:31,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 17:23:31,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 17:23:31,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 17:23:31,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 17:23:31,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 17:23:31,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 17:23:31,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 17:23:31,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 17:23:31,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 17:23:31,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 17:23:31,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 17:23:31,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 17:23:31,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 17:23:31,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 17:23:31,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 17:23:31,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 17:23:31,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 17:23:31,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 17:23:31,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 17:23:31,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 17:23:31,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 17:23:31,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 17:23:31,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 17:23:31,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 17:23:31,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 17:23:31,158 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 [2019-09-20 17:23:31,172 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 17:23:31,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 17:23:31,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 17:23:31,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 17:23:31,174 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 17:23:31,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 17:23:31,175 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 17:23:31,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 17:23:31,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 17:23:31,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 17:23:31,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 17:23:31,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 17:23:31,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 17:23:31,176 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 17:23:31,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 17:23:31,177 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 17:23:31,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 17:23:31,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 17:23:31,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 17:23:31,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 17:23:31,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 17:23:31,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 17:23:31,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 17:23:31,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 17:23:31,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 17:23:31,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 17:23:31,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 17:23:31,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 17:23:31,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain 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 -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Intern Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_DDA [2019-09-20 17:23:31,211 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 17:23:31,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 17:23:31,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 17:23:31,235 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 17:23:31,235 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 17:23:31,236 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr4.c [2019-09-20 17:23:31,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ad3e6137/e289cd14da534ba7885c55696ece2c96/FLAGfa39103fe [2019-09-20 17:23:31,782 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 17:23:31,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr4.c [2019-09-20 17:23:31,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ad3e6137/e289cd14da534ba7885c55696ece2c96/FLAGfa39103fe [2019-09-20 17:23:32,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ad3e6137/e289cd14da534ba7885c55696ece2c96 [2019-09-20 17:23:32,133 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 17:23:32,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 17:23:32,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 17:23:32,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 17:23:32,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 17:23:32,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 05:23:32" (1/1) ... [2019-09-20 17:23:32,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb49e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 05:23:32, skipping insertion in model container [2019-09-20 17:23:32,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 05:23:32" (1/1) ... [2019-09-20 17:23:32,151 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 17:23:32,174 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 17:23:32,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 17:23:32,395 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 17:23:32,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 17:23:32,563 INFO L192 MainTranslator]: Completed translation [2019-09-20 17:23:32,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 05:23:32 WrapperNode [2019-09-20 17:23:32,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 17:23:32,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 17:23:32,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 17:23:32,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 17:23:32,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 05:23:32" (1/1) ... [2019-09-20 17:23:32,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 05:23:32" (1/1) ... [2019-09-20 17:23:32,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 05:23:32" (1/1) ... [2019-09-20 17:23:32,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 05:23:32" (1/1) ... [2019-09-20 17:23:32,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 05:23:32" (1/1) ... [2019-09-20 17:23:32,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 05:23:32" (1/1) ... [2019-09-20 17:23:32,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 05:23:32" (1/1) ... [2019-09-20 17:23:32,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 17:23:32,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 17:23:32,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 17:23:32,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 17:23:32,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 05:23:32" (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 [2019-09-20 17:23:32,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 17:23:32,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 17:23:32,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 17:23:32,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 17:23:32,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 17:23:32,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 17:23:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 17:23:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 17:23:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 17:23:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 17:23:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 17:23:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 17:23:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 17:23:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 17:23:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 17:23:33,400 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 17:23:33,400 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 17:23:33,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 05:23:33 BoogieIcfgContainer [2019-09-20 17:23:33,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 17:23:33,405 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-09-20 17:23:33,405 INFO L271 PluginConnector]: Initializing Sifa... [2019-09-20 17:23:33,405 INFO L275 PluginConnector]: Sifa initialized [2019-09-20 17:23:33,407 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 05:23:33" (1/1) ... [2019-09-20 17:23:33,407 INFO L79 SifaObserver]: Intern domains=ExplicitValueDomain;IntervalDomain ♦ Abstract Domain=CompoundDomain ♦ Abstract when formula's dag size exceeds (negative numbers disable this limit)=-1 ♦ Fluid=SizeLimitFluid ♦ 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=SizeLimitFluid [2019-09-20 17:23:33,444 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-09-20 17:23:33,445 INFO L169 IcfgInterpreter]: Building call graph [2019-09-20 17:23:33,455 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-09-20 17:23:33,468 INFO L179 IcfgInterpreter]: Starting interpretation [2019-09-20 17:23:33,469 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-09-20 17:23:33,715 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-09-20 17:23:34,006 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2019-09-20 17:23:34,125 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2019-09-20 17:23:34,437 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2019-09-20 17:23:34,941 WARN L191 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 91 [2019-09-20 17:23:35,161 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2019-09-20 17:23:35,632 WARN L191 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2019-09-20 17:23:37,382 WARN L191 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 156 DAG size of output: 113 [2019-09-20 17:23:37,856 WARN L191 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2019-09-20 17:23:38,736 WARN L191 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 113 [2019-09-20 17:23:40,589 WARN L191 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 135 DAG size of output: 121 [2019-09-20 17:23:41,470 WARN L191 SmtUtils]: Spent 880.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-09-20 17:23:42,945 WARN L191 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2019-09-20 17:23:53,563 WARN L191 SmtUtils]: Spent 10.60 s on a formula simplification. DAG size of input: 197 DAG size of output: 142 [2019-09-20 17:23:56,714 WARN L191 SmtUtils]: Spent 3.15 s on a formula simplification that was a NOOP. DAG size: 142 [2019-09-20 17:24:03,285 WARN L191 SmtUtils]: Spent 6.51 s on a formula simplification. DAG size of input: 145 DAG size of output: 142 [2019-09-20 17:24:11,574 WARN L191 SmtUtils]: Spent 8.27 s on a formula simplification. DAG size of input: 165 DAG size of output: 150 [2019-09-20 17:24:15,832 WARN L191 SmtUtils]: Spent 4.26 s on a formula simplification that was a NOOP. DAG size: 150 [2019-09-20 17:24:22,805 WARN L191 SmtUtils]: Spent 6.97 s on a formula simplification. DAG size of input: 154 DAG size of output: 150