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_clnt_1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 07:06:46,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 07:06:46,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 07:06:46,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 07:06:46,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 07:06:46,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 07:06:46,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 07:06:46,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 07:06:46,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 07:06:46,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 07:06:46,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 07:06:46,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 07:06:46,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 07:06:46,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 07:06:46,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 07:06:46,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 07:06:46,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 07:06:46,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 07:06:46,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 07:06:46,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 07:06:46,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 07:06:46,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 07:06:46,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 07:06:46,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 07:06:46,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 07:06:46,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 07:06:46,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 07:06:46,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 07:06:46,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 07:06:46,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 07:06:46,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 07:06:46,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 07:06:46,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 07:06:46,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 07:06:46,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 07:06:46,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 07:06:46,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 07:06:46,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 07:06:46,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 07:06:46,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 07:06:46,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 07:06:46,565 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 [2019-10-15 07:06:46,579 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 07:06:46,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 07:06:46,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 07:06:46,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 07:06:46,581 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 07:06:46,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 07:06:46,581 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 07:06:46,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 07:06:46,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 07:06:46,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 07:06:46,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 07:06:46,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 07:06:46,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 07:06:46,583 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 07:06:46,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 07:06:46,583 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 07:06:46,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 07:06:46,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 07:06:46,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 07:06:46,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 07:06:46,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 07:06:46,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 07:06:46,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 07:06:46,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 07:06:46,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 07:06:46,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 07:06:46,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 07:06:46,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 07:06:46,586 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 [2019-10-15 07:06:46,861 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 07:06:46,874 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 07:06:46,878 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 07:06:46,879 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 07:06:46,880 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 07:06:46,881 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_1.cil-2.c [2019-10-15 07:06:46,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6e38a6c8/bcf95e315d1b4b5690dc14cc3d44b259/FLAG4be1c5288 [2019-10-15 07:06:47,467 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 07:06:47,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_clnt_1.cil-2.c [2019-10-15 07:06:47,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6e38a6c8/bcf95e315d1b4b5690dc14cc3d44b259/FLAG4be1c5288 [2019-10-15 07:06:47,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6e38a6c8/bcf95e315d1b4b5690dc14cc3d44b259 [2019-10-15 07:06:47,774 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 07:06:47,776 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 07:06:47,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 07:06:47,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 07:06:47,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 07:06:47,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:06:47" (1/1) ... [2019-10-15 07:06:47,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@581c0b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:47, skipping insertion in model container [2019-10-15 07:06:47,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:06:47" (1/1) ... [2019-10-15 07:06:47,791 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 07:06:47,840 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 07:06:48,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 07:06:48,077 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 07:06:48,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 07:06:48,260 INFO L192 MainTranslator]: Completed translation [2019-10-15 07:06:48,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:48 WrapperNode [2019-10-15 07:06:48,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 07:06:48,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 07:06:48,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 07:06:48,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 07:06:48,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:48" (1/1) ... [2019-10-15 07:06:48,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:48" (1/1) ... [2019-10-15 07:06:48,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:48" (1/1) ... [2019-10-15 07:06:48,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:48" (1/1) ... [2019-10-15 07:06:48,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:48" (1/1) ... [2019-10-15 07:06:48,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:48" (1/1) ... [2019-10-15 07:06:48,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:48" (1/1) ... [2019-10-15 07:06:48,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 07:06:48,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 07:06:48,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 07:06:48,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 07:06:48,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:48" (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 [2019-10-15 07:06:48,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 07:06:48,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 07:06:48,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2019-10-15 07:06:48,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 07:06:48,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 07:06:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-15 07:06:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 07:06:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-15 07:06:48,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 07:06:48,378 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2019-10-15 07:06:48,378 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 07:06:48,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 07:06:48,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 07:06:48,576 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-15 07:06:49,119 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2019-10-15 07:06:49,120 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2019-10-15 07:06:49,558 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 07:06:49,559 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 07:06:49,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:06:49 BoogieIcfgContainer [2019-10-15 07:06:49,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 07:06:49,562 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-10-15 07:06:49,562 INFO L271 PluginConnector]: Initializing Sifa... [2019-10-15 07:06:49,562 INFO L275 PluginConnector]: Sifa initialized [2019-10-15 07:06:49,563 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:06:49" (1/1) ... [2019-10-15 07:06:49,564 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 [2019-10-15 07:06:49,593 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-10-15 07:06:49,594 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 07:06:49,611 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 07:06:49,624 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 07:06:49,626 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 07:06:49,746 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 07:06:49,756 INFO L199 IcfgInterpreter]: Interpreting procedure ssl3_connect with input of size 3 for LOIs [2019-10-15 07:06:51,455 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2019-10-15 07:06:52,040 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-15 07:06:52,157 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-15 07:06:52,431 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 207 [2019-10-15 07:06:52,599 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2019-10-15 07:06:53,079 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 197 [2019-10-15 07:06:53,280 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-15 07:06:53,393 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 07:06:53,531 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 197 [2019-10-15 07:06:53,690 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2019-10-15 07:06:53,901 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 07:06:54,219 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 189 [2019-10-15 07:06:55,020 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-15 07:06:58,409 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 223 [2019-10-15 07:06:58,681 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 226