/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-lit/gj2007.c.i.p+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 16:32:03,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 16:32:03,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 16:32:03,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 16:32:03,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 16:32:03,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 16:32:03,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 16:32:03,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 16:32:03,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 16:32:03,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 16:32:03,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 16:32:03,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 16:32:03,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 16:32:03,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 16:32:03,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 16:32:03,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 16:32:03,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 16:32:03,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 16:32:03,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 16:32:03,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 16:32:03,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 16:32:03,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 16:32:03,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 16:32:03,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 16:32:03,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 16:32:03,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 16:32:03,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 16:32:03,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 16:32:03,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 16:32:03,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 16:32:03,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 16:32:03,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 16:32:03,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 16:32:03,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 16:32:03,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 16:32:03,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 16:32:03,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 16:32:03,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 16:32:03,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 16:32:03,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 16:32:03,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 16:32:03,997 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 16:32:04,022 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 16:32:04,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 16:32:04,024 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 16:32:04,024 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 16:32:04,024 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 16:32:04,024 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 16:32:04,024 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 16:32:04,025 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 16:32:04,025 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 16:32:04,025 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 16:32:04,026 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 16:32:04,026 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 16:32:04,027 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 16:32:04,027 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 16:32:04,027 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 16:32:04,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 16:32:04,028 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 16:32:04,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 16:32:04,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 16:32:04,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 16:32:04,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 16:32:04,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 16:32:04,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 16:32:04,030 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 16:32:04,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 16:32:04,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 16:32:04,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 16:32:04,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 16:32:04,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 16:32:04,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 16:32:04,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 16:32:04,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 16:32:04,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 16:32:04,034 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 16:32:04,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 16:32:04,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 16:32:04,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 16:32:04,035 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 16:32:04,328 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 16:32:04,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 16:32:04,351 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 16:32:04,352 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 16:32:04,353 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 16:32:04,354 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2019-11-24 16:32:04,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/605d301f7/f99906aee3614085ac5b34766392615c/FLAG6bba9438e [2019-11-24 16:32:04,919 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 16:32:04,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2019-11-24 16:32:04,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/605d301f7/f99906aee3614085ac5b34766392615c/FLAG6bba9438e [2019-11-24 16:32:05,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/605d301f7/f99906aee3614085ac5b34766392615c [2019-11-24 16:32:05,261 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 16:32:05,263 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 16:32:05,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 16:32:05,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 16:32:05,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 16:32:05,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:32:05" (1/1) ... [2019-11-24 16:32:05,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25c35cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:32:05, skipping insertion in model container [2019-11-24 16:32:05,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:32:05" (1/1) ... [2019-11-24 16:32:05,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 16:32:05,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 16:32:05,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 16:32:05,655 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 16:32:05,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 16:32:05,827 INFO L208 MainTranslator]: Completed translation [2019-11-24 16:32:05,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:32:05 WrapperNode [2019-11-24 16:32:05,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 16:32:05,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 16:32:05,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 16:32:05,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 16:32:05,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:32:05" (1/1) ... [2019-11-24 16:32:05,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:32:05" (1/1) ... [2019-11-24 16:32:05,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 16:32:05,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 16:32:05,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 16:32:05,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 16:32:05,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:32:05" (1/1) ... [2019-11-24 16:32:05,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:32:05" (1/1) ... [2019-11-24 16:32:05,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:32:05" (1/1) ... [2019-11-24 16:32:05,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:32:05" (1/1) ... [2019-11-24 16:32:05,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:32:05" (1/1) ... [2019-11-24 16:32:05,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:32:05" (1/1) ... [2019-11-24 16:32:05,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:32:05" (1/1) ... [2019-11-24 16:32:05,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 16:32:05,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 16:32:05,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 16:32:05,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 16:32:05,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:32:05" (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 16:32:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 16:32:06,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 16:32:07,638 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 16:32:07,639 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-24 16:32:07,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:32:07 BoogieIcfgContainer [2019-11-24 16:32:07,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 16:32:07,641 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-11-24 16:32:07,641 INFO L271 PluginConnector]: Initializing Sifa... [2019-11-24 16:32:07,641 INFO L275 PluginConnector]: Sifa initialized [2019-11-24 16:32:07,642 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:32:07" (1/1) ... [2019-11-24 16:32:07,643 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 16:32:07,667 INFO L159 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-11-24 16:32:07,667 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 16:32:07,675 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 16:32:07,682 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 16:32:07,683 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 16:32:08,652 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-11-24 16:32:08,865 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 213 [2019-11-24 16:32:09,095 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2019-11-24 16:32:09,213 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 217 [2019-11-24 16:32:09,563 WARN L192 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 346 DAG size of output: 341 [2019-11-24 16:32:09,960 WARN L192 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 340 [2019-11-24 16:32:10,724 WARN L192 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 554 [2019-11-24 16:32:11,511 WARN L192 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 552 DAG size of output: 552 [2019-11-24 16:32:13,086 WARN L192 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 957 DAG size of output: 946 [2019-11-24 16:32:15,051 WARN L192 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 946 DAG size of output: 910 [2019-11-24 16:32:17,298 WARN L192 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 882 DAG size of output: 882 [2019-11-24 16:32:18,597 WARN L192 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 883 DAG size of output: 883 [2019-11-24 16:32:22,519 WARN L192 SmtUtils]: Spent 3.82 s on a formula simplification. DAG size of input: 1442 DAG size of output: 1441 [2019-11-24 16:32:27,049 WARN L192 SmtUtils]: Spent 3.71 s on a formula simplification. DAG size of input: 1442 DAG size of output: 1439 [2019-11-24 16:32:39,778 WARN L192 SmtUtils]: Spent 12.03 s on a formula simplification. DAG size of input: 2397 DAG size of output: 2377 [2019-11-24 16:32:56,958 WARN L192 SmtUtils]: Spent 12.35 s on a formula simplification. DAG size of input: 2377 DAG size of output: 2372 [2019-11-24 16:32:58,508 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 5411 conjuctions. This might take some time... [2019-11-24 16:33:05,228 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 5411 conjuctions. This might take some time... [2019-11-24 16:33:23,842 WARN L192 SmtUtils]: Spent 13.09 s on a formula simplification that was a NOOP. DAG size: 2378 [2019-11-24 16:33:36,809 WARN L192 SmtUtils]: Spent 12.96 s on a formula simplification. DAG size of input: 2379 DAG size of output: 2379