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 SequenceOfStatements --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.intern.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_DDA -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 18:23:48,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 18:23:48,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 18:23:48,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 18:23:48,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 18:23:48,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 18:23:48,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 18:23:48,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 18:23:48,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 18:23:48,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 18:23:48,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 18:23:48,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 18:23:48,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 18:23:48,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 18:23:48,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 18:23:48,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 18:23:48,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 18:23:48,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 18:23:48,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 18:23:48,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 18:23:48,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 18:23:48,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 18:23:48,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 18:23:48,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 18:23:48,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 18:23:48,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 18:23:48,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 18:23:48,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 18:23:48,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 18:23:48,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 18:23:48,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 18:23:48,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 18:23:48,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 18:23:48,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 18:23:48,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 18:23:48,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 18:23:48,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 18:23:48,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 18:23:48,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 18:23:48,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 18:23:48,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 18:23:48,779 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 18:23:48,794 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 18:23:48,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 18:23:48,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 18:23:48,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 18:23:48,796 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 18:23:48,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 18:23:48,796 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 18:23:48,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 18:23:48,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 18:23:48,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 18:23:48,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 18:23:48,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 18:23:48,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 18:23:48,798 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 18:23:48,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 18:23:48,798 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 18:23:48,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 18:23:48,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 18:23:48,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 18:23:48,799 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 18:23:48,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 18:23:48,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 18:23:48,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 18:23:48,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 18:23:48,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 18:23:48,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 18:23:48,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 18:23:48,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 18:23:48,801 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 -> SequenceOfStatements 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 18:23:48,831 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 18:23:48,843 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 18:23:48,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 18:23:48,848 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 18:23:48,848 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 18:23:48,849 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2019-09-20 18:23:48,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f62c9e2fc/2d98c877c9ce44d98f975ce4f421fd19/FLAGa2fd1c5d3 [2019-09-20 18:23:49,374 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 18:23:49,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2019-09-20 18:23:49,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f62c9e2fc/2d98c877c9ce44d98f975ce4f421fd19/FLAGa2fd1c5d3 [2019-09-20 18:23:49,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f62c9e2fc/2d98c877c9ce44d98f975ce4f421fd19 [2019-09-20 18:23:49,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 18:23:49,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 18:23:49,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 18:23:49,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 18:23:49,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 18:23:49,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 06:23:49" (1/1) ... [2019-09-20 18:23:49,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56fc8a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:23:49, skipping insertion in model container [2019-09-20 18:23:49,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 06:23:49" (1/1) ... [2019-09-20 18:23:49,786 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 18:23:49,818 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 18:23:50,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 18:23:50,029 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 18:23:50,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 18:23:50,180 INFO L192 MainTranslator]: Completed translation [2019-09-20 18:23:50,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:23:50 WrapperNode [2019-09-20 18:23:50,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 18:23:50,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 18:23:50,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 18:23:50,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 18:23:50,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:23:50" (1/1) ... [2019-09-20 18:23:50,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:23:50" (1/1) ... [2019-09-20 18:23:50,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:23:50" (1/1) ... [2019-09-20 18:23:50,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:23:50" (1/1) ... [2019-09-20 18:23:50,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:23:50" (1/1) ... [2019-09-20 18:23:50,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:23:50" (1/1) ... [2019-09-20 18:23:50,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:23:50" (1/1) ... [2019-09-20 18:23:50,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 18:23:50,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 18:23:50,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 18:23:50,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 18:23:50,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:23:50" (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 18:23:50,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 18:23:50,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 18:23:50,276 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 18:23:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 18:23:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 18:23:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 18:23:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-20 18:23:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 18:23:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 18:23:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 18:23:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 18:23:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 18:23:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 18:23:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 18:23:50,652 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 18:23:50,652 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-20 18:23:50,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 06:23:50 BoogieIcfgContainer [2019-09-20 18:23:50,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 18:23:50,655 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-09-20 18:23:50,656 INFO L271 PluginConnector]: Initializing Sifa... [2019-09-20 18:23:50,656 INFO L275 PluginConnector]: Sifa initialized [2019-09-20 18:23:50,657 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 06:23:50" (1/1) ... [2019-09-20 18:23:50,660 INFO L79 SifaObserver]: Intern domains=ExplicitValueDomain;IntervalDomain ♦ Abstract Domain=ExplicitValueDomain ♦ 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 18:23:50,681 INFO L162 IcfgInterpreter]: Started Sifa with 4 locations of interest [2019-09-20 18:23:50,681 INFO L169 IcfgInterpreter]: Building call graph [2019-09-20 18:23:50,688 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-09-20 18:23:50,697 INFO L179 IcfgInterpreter]: Starting interpretation [2019-09-20 18:23:50,698 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-09-20 18:23:50,865 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 22 for LOIs [2019-09-20 18:23:51,177 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 1 [2019-09-20 18:23:51,599 WARN L191 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2019-09-20 18:23:51,770 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2019-09-20 18:23:52,083 WARN L191 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2019-09-20 18:23:52,263 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-09-20 18:23:52,783 WARN L191 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2019-09-20 18:23:53,024 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-09-20 18:23:57,297 WARN L191 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 127 DAG size of output: 1 [2019-09-20 18:24:02,260 WARN L191 SmtUtils]: Spent 4.96 s on a formula simplification. DAG size of input: 125 DAG size of output: 75 [2019-09-20 18:24:02,362 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2019-09-20 18:24:02,996 WARN L191 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2019-09-20 18:24:03,172 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-09-20 18:24:21,856 WARN L191 SmtUtils]: Spent 18.65 s on a formula simplification. DAG size of input: 195 DAG size of output: 85 [2019-09-20 18:24:28,484 WARN L191 SmtUtils]: Spent 6.53 s on a formula simplification. DAG size of input: 155 DAG size of output: 103 [2019-09-20 18:24:30,516 WARN L191 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 103 [2019-09-20 18:24:31,897 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 173 DAG size of output: 85