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 IntervalDomain -i ../../../trunk/examples/svcomp/nla-digbench/cohencu.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 18:40:09,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 18:40:09,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 18:40:09,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 18:40:09,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 18:40:09,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 18:40:09,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 18:40:09,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 18:40:09,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 18:40:09,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 18:40:09,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 18:40:09,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 18:40:09,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 18:40:09,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 18:40:09,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 18:40:09,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 18:40:09,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 18:40:09,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 18:40:09,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 18:40:09,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 18:40:09,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 18:40:09,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 18:40:09,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 18:40:09,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 18:40:09,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-03 18:40:09,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-03 18:40:09,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-03 18:40:09,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-03 18:40:09,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-03 18:40:09,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-03 18:40:09,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 18:40:09,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 18:40:09,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 18:40:09,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 18:40:09,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 18:40:09,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 18:40:09,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 18:40:09,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 18:40:09,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 18:40:09,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 18:40:09,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 18:40:09,993 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 [2019-09-03 18:40:10,021 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 18:40:10,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 18:40:10,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 18:40:10,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 18:40:10,023 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 18:40:10,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 18:40:10,024 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 18:40:10,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 18:40:10,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 18:40:10,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 18:40:10,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 18:40:10,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 18:40:10,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 18:40:10,025 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 18:40:10,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 18:40:10,025 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 18:40:10,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 18:40:10,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 18:40:10,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 18:40:10,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 18:40:10,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 18:40:10,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 18:40:10,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 18:40:10,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 18:40:10,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 18:40:10,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 18:40:10,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 18:40:10,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 18:40:10,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2019-09-03 18:40:10,057 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 18:40:10,069 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 18:40:10,072 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 18:40:10,074 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 18:40:10,075 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 18:40:10,075 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/cohencu.c [2019-09-03 18:40:10,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc2b9fceb/18f1fea421d84ea9b1ebc33ab1426c18/FLAG9fbff5043 [2019-09-03 18:40:10,545 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 18:40:10,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/cohencu.c [2019-09-03 18:40:10,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc2b9fceb/18f1fea421d84ea9b1ebc33ab1426c18/FLAG9fbff5043 [2019-09-03 18:40:10,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc2b9fceb/18f1fea421d84ea9b1ebc33ab1426c18 [2019-09-03 18:40:10,899 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 18:40:10,901 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 18:40:10,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 18:40:10,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 18:40:10,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 18:40:10,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 06:40:10" (1/1) ... [2019-09-03 18:40:10,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df20252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 06:40:10, skipping insertion in model container [2019-09-03 18:40:10,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 06:40:10" (1/1) ... [2019-09-03 18:40:10,920 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 18:40:10,945 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 18:40:11,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 18:40:11,132 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 18:40:11,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 18:40:11,279 INFO L192 MainTranslator]: Completed translation [2019-09-03 18:40:11,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 06:40:11 WrapperNode [2019-09-03 18:40:11,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 18:40:11,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 18:40:11,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 18:40:11,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 18:40:11,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 06:40:11" (1/1) ... [2019-09-03 18:40:11,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 06:40:11" (1/1) ... [2019-09-03 18:40:11,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 06:40:11" (1/1) ... [2019-09-03 18:40:11,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 06:40:11" (1/1) ... [2019-09-03 18:40:11,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 06:40:11" (1/1) ... [2019-09-03 18:40:11,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 06:40:11" (1/1) ... [2019-09-03 18:40:11,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 06:40:11" (1/1) ... [2019-09-03 18:40:11,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 18:40:11,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 18:40:11,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 18:40:11,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 18:40:11,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 06:40:11" (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 [2019-09-03 18:40:11,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 18:40:11,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 18:40:11,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 18:40:11,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 18:40:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 18:40:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 18:40:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 18:40:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 18:40:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 18:40:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 18:40:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 18:40:11,588 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 18:40:11,589 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 18:40:11,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 06:40:11 BoogieIcfgContainer [2019-09-03 18:40:11,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 18:40:11,591 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-09-03 18:40:11,591 INFO L271 PluginConnector]: Initializing Sifa... [2019-09-03 18:40:11,591 INFO L275 PluginConnector]: Sifa initialized [2019-09-03 18:40:11,593 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 06:40:11" (1/1) ... [2019-09-03 18:40:11,594 INFO L79 SifaObserver]: Intern domains=ExplicitValueDomain;IntervalDomain ♦ Abstract Domain=IntervalDomain ♦ 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=ReUseSupersetCallSummarizer ♦ Xnf Conversion Technique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION ♦ Simplification Technique=NONE ♦ Intern Fluid=SizeLimitFluid [2019-09-03 18:40:11,684 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-09-03 18:40:11,684 INFO L169 IcfgInterpreter]: Building call graph [2019-09-03 18:40:11,692 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-09-03 18:40:11,703 INFO L179 IcfgInterpreter]: Starting interpretation [2019-09-03 18:40:11,704 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-09-03 18:40:11,754 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-09-03 18:40:12,137 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 19 [2019-09-03 18:41:20,217 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 17 [2019-09-03 18:44:58,927 WARN L188 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 19 [2019-09-03 18:46:48,295 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 16 [2019-09-03 18:47:12,371 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 9 [2019-09-03 18:47:28,908 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 16 [2019-09-03 18:47:37,188 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 19 [2019-09-03 18:48:04,114 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 15 [2019-09-03 18:48:13,324 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 17 [2019-09-03 18:48:23,064 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 9 [2019-09-03 18:48:32,530 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 16 [2019-09-03 18:48:42,771 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 17 [2019-09-03 18:49:03,655 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 19 [2019-09-03 18:49:14,193 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 16 [2019-09-03 18:49:25,223 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 19 [2019-09-03 18:49:36,038 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 19 [2019-09-03 18:50:21,571 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 7 [2019-09-03 18:50:33,232 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 17 [2019-09-03 18:50:45,037 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 17 [2019-09-03 18:50:56,924 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 18 [2019-09-03 18:51:20,497 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 17 [2019-09-03 18:51:32,018 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 16 [2019-09-03 18:51:43,466 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 17 [2019-09-03 18:52:06,613 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 16 [2019-09-03 18:52:54,064 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 17 [2019-09-03 18:53:06,023 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 9