/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --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-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:49:06,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:49:06,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:49:06,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:49:06,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:49:06,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:49:06,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:49:06,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:49:06,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:49:06,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:49:06,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:49:06,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:49:06,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:49:06,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:49:06,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:49:06,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:49:06,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:49:06,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:49:06,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:49:06,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:49:06,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:49:06,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:49:06,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:49:06,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:49:06,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:49:06,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:49:06,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:49:06,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:49:06,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:49:06,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:49:06,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:49:06,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:49:06,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:49:06,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:49:06,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:49:06,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:49:06,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:49:06,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:49:06,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:49:06,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:49:06,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:49:06,377 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 [2019-11-07 04:49:06,400 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:49:06,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:49:06,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:49:06,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:49:06,402 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:49:06,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:49:06,403 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:49:06,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:49:06,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:49:06,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:49:06,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:49:06,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:49:06,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:49:06,404 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:49:06,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:49:06,405 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:49:06,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:49:06,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:49:06,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:49:06,405 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:49:06,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:49:06,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:49:06,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:49:06,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:49:06,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:49:06,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:49:06,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:49:06,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:49:06,407 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN 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 [2019-11-07 04:49:06,694 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:49:06,714 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:49:06,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:49:06,719 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:49:06,720 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:49:06,720 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_1.cil-1.c [2019-11-07 04:49:06,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57bcfb0b/bd01026f67ba47f38c9b1e288d67224b/FLAGd5e8255e1 [2019-11-07 04:49:07,280 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:49:07,284 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_clnt_1.cil-1.c [2019-11-07 04:49:07,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57bcfb0b/bd01026f67ba47f38c9b1e288d67224b/FLAGd5e8255e1 [2019-11-07 04:49:07,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57bcfb0b/bd01026f67ba47f38c9b1e288d67224b [2019-11-07 04:49:07,660 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:49:07,662 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:49:07,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:49:07,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:49:07,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:49:07,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:49:07" (1/1) ... [2019-11-07 04:49:07,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b8d86e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:07, skipping insertion in model container [2019-11-07 04:49:07,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:49:07" (1/1) ... [2019-11-07 04:49:07,695 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:49:07,790 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:49:08,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:49:08,056 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:49:08,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:49:08,227 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:49:08,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:08 WrapperNode [2019-11-07 04:49:08,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:49:08,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:49:08,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:49:08,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:49:08,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:08" (1/1) ... [2019-11-07 04:49:08,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:08" (1/1) ... [2019-11-07 04:49:08,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:08" (1/1) ... [2019-11-07 04:49:08,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:08" (1/1) ... [2019-11-07 04:49:08,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:08" (1/1) ... [2019-11-07 04:49:08,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:08" (1/1) ... [2019-11-07 04:49:08,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:08" (1/1) ... [2019-11-07 04:49:08,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:49:08,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:49:08,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:49:08,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:49:08,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:08" (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 [2019-11-07 04:49:08,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:49:08,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:49:08,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2019-11-07 04:49:08,354 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:49:08,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:49:08,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-07 04:49:08,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:49:08,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-11-07 04:49:08,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 04:49:08,355 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2019-11-07 04:49:08,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:49:08,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:49:08,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:49:08,495 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-07 04:49:09,053 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2019-11-07 04:49:09,053 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2019-11-07 04:49:09,398 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:49:09,398 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 04:49:09,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:49:09 BoogieIcfgContainer [2019-11-07 04:49:09,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:49:09,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:49:09,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:49:09,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:49:09,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:49:07" (1/3) ... [2019-11-07 04:49:09,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c21e1b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:49:09, skipping insertion in model container [2019-11-07 04:49:09,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:08" (2/3) ... [2019-11-07 04:49:09,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c21e1b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:49:09, skipping insertion in model container [2019-11-07 04:49:09,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:49:09" (3/3) ... [2019-11-07 04:49:09,409 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_1.cil-1.c [2019-11-07 04:49:09,419 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:49:09,426 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:49:09,437 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:49:09,464 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:49:09,464 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:49:09,464 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:49:09,465 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:49:09,465 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:49:09,465 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:49:09,465 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:49:09,465 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:49:09,500 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2019-11-07 04:49:09,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-07 04:49:09,507 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:09,508 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:49:09,510 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:09,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:09,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1467992, now seen corresponding path program 1 times [2019-11-07 04:49:09,527 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:09,527 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489116007] [2019-11-07 04:49:09,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:49:09,792 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489116007] [2019-11-07 04:49:09,793 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:09,794 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:49:09,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217610349] [2019-11-07 04:49:09,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:49:09,801 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:09,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:49:09,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:49:09,818 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2019-11-07 04:49:09,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:09,905 INFO L93 Difference]: Finished difference Result 183 states and 304 transitions. [2019-11-07 04:49:09,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:49:09,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-07 04:49:09,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:09,922 INFO L225 Difference]: With dead ends: 183 [2019-11-07 04:49:09,922 INFO L226 Difference]: Without dead ends: 164 [2019-11-07 04:49:09,926 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:49:09,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-11-07 04:49:09,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2019-11-07 04:49:09,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2019-11-07 04:49:09,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 237 transitions. [2019-11-07 04:49:09,990 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 237 transitions. Word has length 25 [2019-11-07 04:49:09,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:09,990 INFO L462 AbstractCegarLoop]: Abstraction has 163 states and 237 transitions. [2019-11-07 04:49:09,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:49:09,991 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 237 transitions. [2019-11-07 04:49:09,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-07 04:49:09,993 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:09,993 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:49:09,994 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:09,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:09,994 INFO L82 PathProgramCache]: Analyzing trace with hash -26132316, now seen corresponding path program 1 times [2019-11-07 04:49:09,995 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:09,995 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247489250] [2019-11-07 04:49:09,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:10,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:49:10,056 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247489250] [2019-11-07 04:49:10,057 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:10,057 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:49:10,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729828741] [2019-11-07 04:49:10,059 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:49:10,059 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:10,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:49:10,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:49:10,060 INFO L87 Difference]: Start difference. First operand 163 states and 237 transitions. Second operand 3 states. [2019-11-07 04:49:10,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:10,306 INFO L93 Difference]: Finished difference Result 262 states and 384 transitions. [2019-11-07 04:49:10,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:49:10,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-11-07 04:49:10,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:10,312 INFO L225 Difference]: With dead ends: 262 [2019-11-07 04:49:10,312 INFO L226 Difference]: Without dead ends: 182 [2019-11-07 04:49:10,317 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:49:10,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2019-11-07 04:49:10,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 178. [2019-11-07 04:49:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2019-11-07 04:49:10,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 255 transitions. [2019-11-07 04:49:10,351 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 255 transitions. Word has length 36 [2019-11-07 04:49:10,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:10,352 INFO L462 AbstractCegarLoop]: Abstraction has 178 states and 255 transitions. [2019-11-07 04:49:10,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:49:10,352 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 255 transitions. [2019-11-07 04:49:10,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-07 04:49:10,356 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:10,356 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:49:10,356 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:10,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:10,358 INFO L82 PathProgramCache]: Analyzing trace with hash -398467945, now seen corresponding path program 1 times [2019-11-07 04:49:10,359 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:10,359 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021787474] [2019-11-07 04:49:10,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:49:10,465 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021787474] [2019-11-07 04:49:10,465 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628462244] [2019-11-07 04:49:10,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:49:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:10,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:49:10,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:49:10,632 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-07 04:49:10,632 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:49:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-07 04:49:10,680 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:49:10,680 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 9 [2019-11-07 04:49:10,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310977804] [2019-11-07 04:49:10,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:49:10,681 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:10,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:49:10,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:49:10,682 INFO L87 Difference]: Start difference. First operand 178 states and 255 transitions. Second operand 6 states. [2019-11-07 04:49:11,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:11,222 INFO L93 Difference]: Finished difference Result 533 states and 825 transitions. [2019-11-07 04:49:11,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:11,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2019-11-07 04:49:11,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:11,225 INFO L225 Difference]: With dead ends: 533 [2019-11-07 04:49:11,226 INFO L226 Difference]: Without dead ends: 360 [2019-11-07 04:49:11,227 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:49:11,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2019-11-07 04:49:11,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 328. [2019-11-07 04:49:11,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2019-11-07 04:49:11,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 457 transitions. [2019-11-07 04:49:11,265 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 457 transitions. Word has length 49 [2019-11-07 04:49:11,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:11,265 INFO L462 AbstractCegarLoop]: Abstraction has 328 states and 457 transitions. [2019-11-07 04:49:11,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:49:11,266 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 457 transitions. [2019-11-07 04:49:11,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-07 04:49:11,269 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:11,272 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:49:11,473 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:49:11,474 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:11,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:11,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1478736520, now seen corresponding path program 1 times [2019-11-07 04:49:11,475 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:11,475 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730296621] [2019-11-07 04:49:11,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-07 04:49:11,576 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730296621] [2019-11-07 04:49:11,577 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:11,577 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:49:11,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287172992] [2019-11-07 04:49:11,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:49:11,578 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:11,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:49:11,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:49:11,579 INFO L87 Difference]: Start difference. First operand 328 states and 457 transitions. Second operand 3 states. [2019-11-07 04:49:11,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:11,732 INFO L93 Difference]: Finished difference Result 691 states and 979 transitions. [2019-11-07 04:49:11,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:49:11,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2019-11-07 04:49:11,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:11,735 INFO L225 Difference]: With dead ends: 691 [2019-11-07 04:49:11,735 INFO L226 Difference]: Without dead ends: 370 [2019-11-07 04:49:11,737 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:49:11,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2019-11-07 04:49:11,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 366. [2019-11-07 04:49:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2019-11-07 04:49:11,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 501 transitions. [2019-11-07 04:49:11,751 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 501 transitions. Word has length 64 [2019-11-07 04:49:11,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:11,751 INFO L462 AbstractCegarLoop]: Abstraction has 366 states and 501 transitions. [2019-11-07 04:49:11,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:49:11,752 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 501 transitions. [2019-11-07 04:49:11,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-11-07 04:49:11,754 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:11,755 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:49:11,755 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:11,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:11,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1818418256, now seen corresponding path program 1 times [2019-11-07 04:49:11,755 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:11,756 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282348582] [2019-11-07 04:49:11,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:11,896 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:49:11,897 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282348582] [2019-11-07 04:49:11,899 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729436865] [2019-11-07 04:49:11,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:49:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:11,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 04:49:12,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:49:12,059 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-11-07 04:49:12,059 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:49:12,120 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-11-07 04:49:12,121 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:49:12,121 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6] total 10 [2019-11-07 04:49:12,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38311656] [2019-11-07 04:49:12,122 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:49:12,122 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:12,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:49:12,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:49:12,123 INFO L87 Difference]: Start difference. First operand 366 states and 501 transitions. Second operand 6 states. [2019-11-07 04:49:12,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:12,414 INFO L93 Difference]: Finished difference Result 852 states and 1223 transitions. [2019-11-07 04:49:12,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:12,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2019-11-07 04:49:12,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:12,417 INFO L225 Difference]: With dead ends: 852 [2019-11-07 04:49:12,417 INFO L226 Difference]: Without dead ends: 463 [2019-11-07 04:49:12,419 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:49:12,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2019-11-07 04:49:12,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 413. [2019-11-07 04:49:12,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2019-11-07 04:49:12,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 578 transitions. [2019-11-07 04:49:12,434 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 578 transitions. Word has length 82 [2019-11-07 04:49:12,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:12,435 INFO L462 AbstractCegarLoop]: Abstraction has 413 states and 578 transitions. [2019-11-07 04:49:12,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:49:12,435 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 578 transitions. [2019-11-07 04:49:12,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-07 04:49:12,437 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:12,437 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:49:12,639 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:49:12,640 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:12,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:12,641 INFO L82 PathProgramCache]: Analyzing trace with hash 79755197, now seen corresponding path program 1 times [2019-11-07 04:49:12,641 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:12,641 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477750882] [2019-11-07 04:49:12,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:12,749 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 04:49:12,750 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477750882] [2019-11-07 04:49:12,750 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046932273] [2019-11-07 04:49:12,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:49:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:12,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 04:49:12,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:49:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-11-07 04:49:12,869 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:49:12,880 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:49:12,893 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:49:12,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:49:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-11-07 04:49:12,939 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:49:12,939 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 5] total 7 [2019-11-07 04:49:12,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087034399] [2019-11-07 04:49:12,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:49:12,941 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:12,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:49:12,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:49:12,946 INFO L87 Difference]: Start difference. First operand 413 states and 578 transitions. Second operand 3 states. [2019-11-07 04:49:12,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:12,986 INFO L93 Difference]: Finished difference Result 812 states and 1140 transitions. [2019-11-07 04:49:12,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:49:12,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2019-11-07 04:49:12,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:12,992 INFO L225 Difference]: With dead ends: 812 [2019-11-07 04:49:12,992 INFO L226 Difference]: Without dead ends: 810 [2019-11-07 04:49:12,993 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 177 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:49:12,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2019-11-07 04:49:13,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 808. [2019-11-07 04:49:13,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2019-11-07 04:49:13,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1136 transitions. [2019-11-07 04:49:13,020 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1136 transitions. Word has length 91 [2019-11-07 04:49:13,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:13,021 INFO L462 AbstractCegarLoop]: Abstraction has 808 states and 1136 transitions. [2019-11-07 04:49:13,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:49:13,021 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1136 transitions. [2019-11-07 04:49:13,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-07 04:49:13,025 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:13,025 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:49:13,228 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:49:13,229 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:13,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:13,230 INFO L82 PathProgramCache]: Analyzing trace with hash 198010875, now seen corresponding path program 1 times [2019-11-07 04:49:13,230 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:13,230 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351989213] [2019-11-07 04:49:13,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:13,305 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-11-07 04:49:13,305 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351989213] [2019-11-07 04:49:13,305 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:13,305 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:49:13,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923986157] [2019-11-07 04:49:13,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:49:13,307 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:13,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:49:13,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:49:13,308 INFO L87 Difference]: Start difference. First operand 808 states and 1136 transitions. Second operand 3 states. [2019-11-07 04:49:13,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:13,454 INFO L93 Difference]: Finished difference Result 1618 states and 2272 transitions. [2019-11-07 04:49:13,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:49:13,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2019-11-07 04:49:13,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:13,460 INFO L225 Difference]: With dead ends: 1618 [2019-11-07 04:49:13,460 INFO L226 Difference]: Without dead ends: 822 [2019-11-07 04:49:13,462 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:49:13,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2019-11-07 04:49:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 808. [2019-11-07 04:49:13,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2019-11-07 04:49:13,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1092 transitions. [2019-11-07 04:49:13,489 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1092 transitions. Word has length 113 [2019-11-07 04:49:13,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:13,491 INFO L462 AbstractCegarLoop]: Abstraction has 808 states and 1092 transitions. [2019-11-07 04:49:13,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:49:13,491 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1092 transitions. [2019-11-07 04:49:13,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-11-07 04:49:13,494 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:13,494 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:49:13,494 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:13,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:13,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1700788788, now seen corresponding path program 1 times [2019-11-07 04:49:13,495 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:13,496 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245991599] [2019-11-07 04:49:13,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 102 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:49:13,626 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245991599] [2019-11-07 04:49:13,626 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138642596] [2019-11-07 04:49:13,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:49:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:13,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 04:49:13,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:49:13,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:49:13,756 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:49:13,794 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 102 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:49:13,794 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:49:13,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:49:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 102 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:49:13,845 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1402220228] [2019-11-07 04:49:13,906 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2019-11-07 04:49:13,906 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:49:13,914 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:49:13,922 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:49:13,923 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:49:13,986 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:49:13,993 INFO L197 IcfgInterpreter]: Interpreting procedure ssl3_connect with input of size 3 for LOIs [2019-11-07 04:49:14,774 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-07 04:49:14,987 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-11-07 04:49:18,449 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:49:18,451 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:49:19,222 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 149 [2019-11-07 04:49:19,970 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2019-11-07 04:49:20,734 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 148 [2019-11-07 04:49:21,776 WARN L191 SmtUtils]: Spent 982.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 148 [2019-11-07 04:49:22,800 WARN L191 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 154 [2019-11-07 04:49:23,920 WARN L191 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 165 DAG size of output: 155 [2019-11-07 04:49:24,873 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 152 [2019-11-07 04:49:26,997 WARN L191 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 204 DAG size of output: 180 [2019-11-07 04:49:29,210 WARN L191 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 172 DAG size of output: 165 [2019-11-07 04:49:30,024 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 147 [2019-11-07 04:49:30,949 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 150 [2019-11-07 04:49:31,733 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 147 [2019-11-07 04:49:32,531 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 153 [2019-11-07 04:49:33,465 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 153 [2019-11-07 04:49:34,366 WARN L191 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 156 [2019-11-07 04:49:35,177 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 147 [2019-11-07 04:49:36,135 WARN L191 SmtUtils]: Spent 850.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 151 [2019-11-07 04:49:37,076 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 150 [2019-11-07 04:49:37,893 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 153 [2019-11-07 04:49:38,823 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 156 [2019-11-07 04:49:39,705 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 159 [2019-11-07 04:49:40,673 WARN L191 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 162 [2019-11-07 04:49:41,667 WARN L191 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 165 [2019-11-07 04:49:42,650 WARN L191 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 168 [2019-11-07 04:49:43,647 WARN L191 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 171 [2019-11-07 04:49:44,594 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 174 [2019-11-07 04:49:45,624 WARN L191 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 177 [2019-11-07 04:49:46,357 WARN L191 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 144 [2019-11-07 04:49:47,194 WARN L191 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 147 [2019-11-07 04:49:48,001 WARN L191 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 150 [2019-11-07 04:49:48,832 WARN L191 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 153 [2019-11-07 04:49:49,722 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 156 [2019-11-07 04:49:50,641 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 159