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.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_8.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-04 14:30:03,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-04 14:30:03,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-04 14:30:03,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-04 14:30:03,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-04 14:30:03,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-04 14:30:03,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-04 14:30:03,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-04 14:30:03,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-04 14:30:03,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-04 14:30:03,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-04 14:30:03,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-04 14:30:03,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-04 14:30:03,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-04 14:30:03,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-04 14:30:03,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-04 14:30:03,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-04 14:30:03,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-04 14:30:03,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-04 14:30:03,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-04 14:30:03,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-04 14:30:03,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-04 14:30:03,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-04 14:30:03,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-04 14:30:03,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-04 14:30:03,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-04 14:30:03,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-04 14:30:03,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-04 14:30:03,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-04 14:30:03,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-04 14:30:03,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-04 14:30:03,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-04 14:30:03,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-04 14:30:03,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-04 14:30:03,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-04 14:30:03,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-04 14:30:03,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-04 14:30:03,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-04 14:30:03,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-04 14:30:03,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-04 14:30:03,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-04 14:30:03,870 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 [2019-10-04 14:30:03,884 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-04 14:30:03,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-04 14:30:03,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-04 14:30:03,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-04 14:30:03,886 INFO L138 SettingsManager]: * Use SBE=true [2019-10-04 14:30:03,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-04 14:30:03,886 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-04 14:30:03,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-04 14:30:03,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-04 14:30:03,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-04 14:30:03,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-04 14:30:03,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-04 14:30:03,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-04 14:30:03,887 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-04 14:30:03,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-04 14:30:03,888 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-04 14:30:03,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-04 14:30:03,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-04 14:30:03,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-04 14:30:03,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-04 14:30:03,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-04 14:30:03,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-04 14:30:03,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-04 14:30:03,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-04 14:30:03,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-04 14:30:03,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-04 14:30:03,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-04 14:30:03,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-04 14:30:03,890 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: Simplification Technique -> SIMPLIFY_QUICK [2019-10-04 14:30:03,932 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-04 14:30:03,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-04 14:30:03,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-04 14:30:03,949 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-04 14:30:03,950 INFO L275 PluginConnector]: CDTParser initialized [2019-10-04 14:30:03,950 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_8.cil.c [2019-10-04 14:30:04,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c0c95a0d/fd749f6c7135486e80b6a0fbf9149440/FLAGc3e30688b [2019-10-04 14:30:04,579 INFO L306 CDTParser]: Found 1 translation units. [2019-10-04 14:30:04,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_8.cil.c [2019-10-04 14:30:04,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c0c95a0d/fd749f6c7135486e80b6a0fbf9149440/FLAGc3e30688b [2019-10-04 14:30:04,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c0c95a0d/fd749f6c7135486e80b6a0fbf9149440 [2019-10-04 14:30:04,928 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-04 14:30:04,929 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-04 14:30:04,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-04 14:30:04,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-04 14:30:04,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-04 14:30:04,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.10 02:30:04" (1/1) ... [2019-10-04 14:30:04,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ed8428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 02:30:04, skipping insertion in model container [2019-10-04 14:30:04,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.10 02:30:04" (1/1) ... [2019-10-04 14:30:04,946 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-04 14:30:04,996 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-04 14:30:05,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-04 14:30:05,372 INFO L188 MainTranslator]: Completed pre-run [2019-10-04 14:30:05,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-04 14:30:05,452 INFO L192 MainTranslator]: Completed translation [2019-10-04 14:30:05,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 02:30:05 WrapperNode [2019-10-04 14:30:05,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-04 14:30:05,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-04 14:30:05,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-04 14:30:05,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-04 14:30:05,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 02:30:05" (1/1) ... [2019-10-04 14:30:05,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 02:30:05" (1/1) ... [2019-10-04 14:30:05,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 02:30:05" (1/1) ... [2019-10-04 14:30:05,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 02:30:05" (1/1) ... [2019-10-04 14:30:05,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 02:30:05" (1/1) ... [2019-10-04 14:30:05,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 02:30:05" (1/1) ... [2019-10-04 14:30:05,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 02:30:05" (1/1) ... [2019-10-04 14:30:05,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-04 14:30:05,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-04 14:30:05,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-04 14:30:05,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-04 14:30:05,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 02:30:05" (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 [2019-10-04 14:30:05,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-04 14:30:05,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-04 14:30:05,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2019-10-04 14:30:05,584 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-04 14:30:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-04 14:30:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-04 14:30:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-04 14:30:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-04 14:30:05,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-04 14:30:05,585 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2019-10-04 14:30:05,585 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-04 14:30:05,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-04 14:30:05,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-04 14:30:05,768 WARN L730 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-04 14:30:06,431 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2019-10-04 14:30:06,431 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2019-10-04 14:30:06,729 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-04 14:30:06,730 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-04 14:30:06,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:30:06 BoogieIcfgContainer [2019-10-04 14:30:06,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-04 14:30:06,732 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-10-04 14:30:06,732 INFO L271 PluginConnector]: Initializing Sifa... [2019-10-04 14:30:06,732 INFO L275 PluginConnector]: Sifa initialized [2019-10-04 14:30:06,734 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:30:06" (1/1) ... [2019-10-04 14:30:06,734 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 [2019-10-04 14:30:06,760 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-10-04 14:30:06,760 INFO L169 IcfgInterpreter]: Building call graph [2019-10-04 14:30:06,770 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-04 14:30:06,779 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-04 14:30:06,781 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-04 14:30:06,907 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-04 14:30:06,922 INFO L199 IcfgInterpreter]: Interpreting procedure ssl3_accept with input of size 3 for LOIs [2019-10-04 14:30:12,126 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-04 14:30:14,095 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2019-10-04 14:30:14,802 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2019-10-04 14:30:15,433 WARN L191 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2019-10-04 14:30:18,891 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 198 [2019-10-04 14:31:20,151 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 234 [2019-10-04 14:31:20,496 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 234 [2019-10-04 14:31:30,693 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 237 [2019-10-04 14:31:30,842 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 237 [2019-10-04 14:36:12,713 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 271 [2019-10-04 14:36:58,724 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 252 [2019-10-04 14:37:17,425 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 259 [2019-10-04 14:41:33,682 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2019-10-04 14:41:33,841 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2019-10-04 14:41:35,858 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 252 [2019-10-04 14:41:36,000 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 240