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_srvr_11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:31:00,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:31:00,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:31:00,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:31:00,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:31:00,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:31:00,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:31:00,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:31:00,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:31:00,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:31:00,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:31:00,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:31:00,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:31:00,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:31:00,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:31:00,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:31:00,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:31:00,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:31:00,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:31:00,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:31:00,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:31:00,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:31:00,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:31:00,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:31:00,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:31:00,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:31:00,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:31:00,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:31:00,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:31:00,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:31:00,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:31:00,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:31:00,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:31:00,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:31:00,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:31:00,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:31:00,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:31:00,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:31:00,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:31:00,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:31:00,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:31:00,317 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 03:31:00,342 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:31:00,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:31:00,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:31:00,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:31:00,344 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:31:00,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:31:00,344 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:31:00,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:31:00,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:31:00,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:31:00,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:31:00,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:31:00,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:31:00,346 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:31:00,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:31:00,346 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:31:00,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:31:00,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:31:00,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:31:00,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:31:00,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:31:00,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:31:00,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:31:00,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:31:00,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:31:00,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:31:00,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:31:00,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:31:00,349 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 [2019-10-15 03:31:00,678 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:31:00,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:31:00,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:31:00,704 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:31:00,705 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:31:00,707 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_11.cil.c [2019-10-15 03:31:00,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e33d6e9f/848c425503224a7b8775698172b848d2/FLAG38928cb86 [2019-10-15 03:31:01,270 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:31:01,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_11.cil.c [2019-10-15 03:31:01,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e33d6e9f/848c425503224a7b8775698172b848d2/FLAG38928cb86 [2019-10-15 03:31:01,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e33d6e9f/848c425503224a7b8775698172b848d2 [2019-10-15 03:31:01,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:31:01,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:31:01,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:31:01,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:31:01,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:31:01,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:31:01" (1/1) ... [2019-10-15 03:31:01,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d836b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:01, skipping insertion in model container [2019-10-15 03:31:01,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:31:01" (1/1) ... [2019-10-15 03:31:01,630 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:31:01,679 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:31:01,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:31:01,985 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:31:02,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:31:02,159 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:31:02,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:02 WrapperNode [2019-10-15 03:31:02,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:31:02,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:31:02,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:31:02,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:31:02,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:02" (1/1) ... [2019-10-15 03:31:02,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:02" (1/1) ... [2019-10-15 03:31:02,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:02" (1/1) ... [2019-10-15 03:31:02,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:02" (1/1) ... [2019-10-15 03:31:02,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:02" (1/1) ... [2019-10-15 03:31:02,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:02" (1/1) ... [2019-10-15 03:31:02,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:02" (1/1) ... [2019-10-15 03:31:02,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:31:02,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:31:02,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:31:02,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:31:02,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:02" (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 03:31:02,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:31:02,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:31:02,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2019-10-15 03:31:02,301 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:31:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:31:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-15 03:31:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:31:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-15 03:31:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-15 03:31:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 03:31:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2019-10-15 03:31:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:31:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:31:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:31:02,563 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-15 03:31:03,143 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2019-10-15 03:31:03,143 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2019-10-15 03:31:03,460 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:31:03,461 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:31:03,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:31:03 BoogieIcfgContainer [2019-10-15 03:31:03,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:31:03,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:31:03,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:31:03,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:31:03,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:31:01" (1/3) ... [2019-10-15 03:31:03,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e0870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:31:03, skipping insertion in model container [2019-10-15 03:31:03,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:02" (2/3) ... [2019-10-15 03:31:03,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e0870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:31:03, skipping insertion in model container [2019-10-15 03:31:03,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:31:03" (3/3) ... [2019-10-15 03:31:03,489 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_11.cil.c [2019-10-15 03:31:03,500 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:31:03,509 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:31:03,521 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:31:03,549 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:31:03,549 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:31:03,549 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:31:03,549 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:31:03,550 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:31:03,550 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:31:03,550 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:31:03,550 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:31:03,572 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states. [2019-10-15 03:31:03,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-15 03:31:03,579 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:03,580 INFO L380 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] [2019-10-15 03:31:03,581 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:03,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:03,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1889007897, now seen corresponding path program 1 times [2019-10-15 03:31:03,598 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:03,599 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105962091] [2019-10-15 03:31:03,599 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:03,599 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:03,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:03,852 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105962091] [2019-10-15 03:31:03,853 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:03,853 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:31:03,854 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601331215] [2019-10-15 03:31:03,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:31:03,860 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:03,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:31:03,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:03,879 INFO L87 Difference]: Start difference. First operand 124 states. Second operand 3 states. [2019-10-15 03:31:04,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:04,214 INFO L93 Difference]: Finished difference Result 296 states and 516 transitions. [2019-10-15 03:31:04,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:31:04,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-15 03:31:04,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:04,232 INFO L225 Difference]: With dead ends: 296 [2019-10-15 03:31:04,233 INFO L226 Difference]: Without dead ends: 158 [2019-10-15 03:31:04,238 INFO L600 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 [2019-10-15 03:31:04,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2019-10-15 03:31:04,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 155. [2019-10-15 03:31:04,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2019-10-15 03:31:04,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 226 transitions. [2019-10-15 03:31:04,296 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 226 transitions. Word has length 25 [2019-10-15 03:31:04,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:04,297 INFO L462 AbstractCegarLoop]: Abstraction has 155 states and 226 transitions. [2019-10-15 03:31:04,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:31:04,297 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 226 transitions. [2019-10-15 03:31:04,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-15 03:31:04,301 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:04,301 INFO L380 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, 1, 1, 1, 1, 1] [2019-10-15 03:31:04,302 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:04,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:04,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1806709606, now seen corresponding path program 1 times [2019-10-15 03:31:04,303 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:04,303 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773929123] [2019-10-15 03:31:04,304 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:04,304 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:04,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:04,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773929123] [2019-10-15 03:31:04,410 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:04,410 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:31:04,411 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030534200] [2019-10-15 03:31:04,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:31:04,413 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:04,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:31:04,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:04,413 INFO L87 Difference]: Start difference. First operand 155 states and 226 transitions. Second operand 3 states. [2019-10-15 03:31:04,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:04,654 INFO L93 Difference]: Finished difference Result 348 states and 528 transitions. [2019-10-15 03:31:04,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:31:04,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-10-15 03:31:04,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:04,658 INFO L225 Difference]: With dead ends: 348 [2019-10-15 03:31:04,658 INFO L226 Difference]: Without dead ends: 189 [2019-10-15 03:31:04,660 INFO L600 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 [2019-10-15 03:31:04,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2019-10-15 03:31:04,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2019-10-15 03:31:04,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2019-10-15 03:31:04,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 260 transitions. [2019-10-15 03:31:04,681 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 260 transitions. Word has length 30 [2019-10-15 03:31:04,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:04,684 INFO L462 AbstractCegarLoop]: Abstraction has 176 states and 260 transitions. [2019-10-15 03:31:04,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:31:04,684 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 260 transitions. [2019-10-15 03:31:04,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-15 03:31:04,689 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:04,689 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:04,690 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:04,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:04,691 INFO L82 PathProgramCache]: Analyzing trace with hash -627877732, now seen corresponding path program 1 times [2019-10-15 03:31:04,692 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:04,692 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026546341] [2019-10-15 03:31:04,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:04,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:04,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:04,827 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026546341] [2019-10-15 03:31:04,828 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:04,828 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:31:04,828 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241693818] [2019-10-15 03:31:04,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:31:04,830 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:04,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:31:04,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:31:04,831 INFO L87 Difference]: Start difference. First operand 176 states and 260 transitions. Second operand 4 states. [2019-10-15 03:31:05,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:05,118 INFO L93 Difference]: Finished difference Result 372 states and 551 transitions. [2019-10-15 03:31:05,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:05,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-10-15 03:31:05,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:05,122 INFO L225 Difference]: With dead ends: 372 [2019-10-15 03:31:05,122 INFO L226 Difference]: Without dead ends: 204 [2019-10-15 03:31:05,124 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:05,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-10-15 03:31:05,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 190. [2019-10-15 03:31:05,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2019-10-15 03:31:05,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 279 transitions. [2019-10-15 03:31:05,138 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 279 transitions. Word has length 33 [2019-10-15 03:31:05,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:05,138 INFO L462 AbstractCegarLoop]: Abstraction has 190 states and 279 transitions. [2019-10-15 03:31:05,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:31:05,139 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 279 transitions. [2019-10-15 03:31:05,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-15 03:31:05,141 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:05,141 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:05,141 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:05,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:05,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1693795598, now seen corresponding path program 1 times [2019-10-15 03:31:05,142 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:05,142 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391042984] [2019-10-15 03:31:05,142 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:05,143 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:05,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:05,229 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391042984] [2019-10-15 03:31:05,230 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:05,230 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:31:05,230 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410640999] [2019-10-15 03:31:05,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:31:05,231 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:05,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:31:05,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:31:05,232 INFO L87 Difference]: Start difference. First operand 190 states and 279 transitions. Second operand 4 states. [2019-10-15 03:31:05,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:05,459 INFO L93 Difference]: Finished difference Result 392 states and 576 transitions. [2019-10-15 03:31:05,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:05,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2019-10-15 03:31:05,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:05,461 INFO L225 Difference]: With dead ends: 392 [2019-10-15 03:31:05,461 INFO L226 Difference]: Without dead ends: 210 [2019-10-15 03:31:05,463 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:05,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2019-10-15 03:31:05,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 188. [2019-10-15 03:31:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-10-15 03:31:05,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 277 transitions. [2019-10-15 03:31:05,478 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 277 transitions. Word has length 34 [2019-10-15 03:31:05,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:05,478 INFO L462 AbstractCegarLoop]: Abstraction has 188 states and 277 transitions. [2019-10-15 03:31:05,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:31:05,479 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 277 transitions. [2019-10-15 03:31:05,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-15 03:31:05,483 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:05,483 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:05,484 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:05,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:05,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1841667609, now seen corresponding path program 1 times [2019-10-15 03:31:05,486 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:05,486 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768318432] [2019-10-15 03:31:05,486 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:05,487 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:05,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:05,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:05,556 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768318432] [2019-10-15 03:31:05,556 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:05,557 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:31:05,557 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646665512] [2019-10-15 03:31:05,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:31:05,558 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:05,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:31:05,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:05,559 INFO L87 Difference]: Start difference. First operand 188 states and 277 transitions. Second operand 3 states. [2019-10-15 03:31:05,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:05,746 INFO L93 Difference]: Finished difference Result 421 states and 643 transitions. [2019-10-15 03:31:05,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:31:05,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-10-15 03:31:05,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:05,749 INFO L225 Difference]: With dead ends: 421 [2019-10-15 03:31:05,749 INFO L226 Difference]: Without dead ends: 229 [2019-10-15 03:31:05,750 INFO L600 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 [2019-10-15 03:31:05,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2019-10-15 03:31:05,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 213. [2019-10-15 03:31:05,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2019-10-15 03:31:05,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 319 transitions. [2019-10-15 03:31:05,761 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 319 transitions. Word has length 36 [2019-10-15 03:31:05,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:05,761 INFO L462 AbstractCegarLoop]: Abstraction has 213 states and 319 transitions. [2019-10-15 03:31:05,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:31:05,762 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 319 transitions. [2019-10-15 03:31:05,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-15 03:31:05,763 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:05,763 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:05,764 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:05,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:05,764 INFO L82 PathProgramCache]: Analyzing trace with hash -2131526019, now seen corresponding path program 1 times [2019-10-15 03:31:05,764 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:05,765 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670194726] [2019-10-15 03:31:05,765 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:05,765 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:05,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:05,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:05,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670194726] [2019-10-15 03:31:05,808 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:05,808 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:31:05,808 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713072086] [2019-10-15 03:31:05,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:31:05,809 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:05,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:31:05,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:05,809 INFO L87 Difference]: Start difference. First operand 213 states and 319 transitions. Second operand 3 states. [2019-10-15 03:31:06,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:06,053 INFO L93 Difference]: Finished difference Result 463 states and 713 transitions. [2019-10-15 03:31:06,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:31:06,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2019-10-15 03:31:06,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:06,059 INFO L225 Difference]: With dead ends: 463 [2019-10-15 03:31:06,059 INFO L226 Difference]: Without dead ends: 246 [2019-10-15 03:31:06,060 INFO L600 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 [2019-10-15 03:31:06,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2019-10-15 03:31:06,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 242. [2019-10-15 03:31:06,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2019-10-15 03:31:06,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 369 transitions. [2019-10-15 03:31:06,070 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 369 transitions. Word has length 38 [2019-10-15 03:31:06,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:06,070 INFO L462 AbstractCegarLoop]: Abstraction has 242 states and 369 transitions. [2019-10-15 03:31:06,070 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:31:06,071 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 369 transitions. [2019-10-15 03:31:06,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-15 03:31:06,072 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:06,072 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:06,073 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:06,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:06,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1537718796, now seen corresponding path program 1 times [2019-10-15 03:31:06,073 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:06,073 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065852976] [2019-10-15 03:31:06,074 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:06,074 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:06,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:06,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:06,110 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065852976] [2019-10-15 03:31:06,111 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:06,111 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:31:06,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843687389] [2019-10-15 03:31:06,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:31:06,112 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:06,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:31:06,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:06,112 INFO L87 Difference]: Start difference. First operand 242 states and 369 transitions. Second operand 3 states. [2019-10-15 03:31:06,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:06,137 INFO L93 Difference]: Finished difference Result 457 states and 698 transitions. [2019-10-15 03:31:06,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:31:06,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2019-10-15 03:31:06,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:06,141 INFO L225 Difference]: With dead ends: 457 [2019-10-15 03:31:06,141 INFO L226 Difference]: Without dead ends: 455 [2019-10-15 03:31:06,141 INFO L600 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 [2019-10-15 03:31:06,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2019-10-15 03:31:06,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 452. [2019-10-15 03:31:06,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2019-10-15 03:31:06,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 694 transitions. [2019-10-15 03:31:06,157 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 694 transitions. Word has length 45 [2019-10-15 03:31:06,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:06,158 INFO L462 AbstractCegarLoop]: Abstraction has 452 states and 694 transitions. [2019-10-15 03:31:06,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:31:06,158 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 694 transitions. [2019-10-15 03:31:06,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 03:31:06,159 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:06,159 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:06,160 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:06,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:06,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1768666445, now seen corresponding path program 1 times [2019-10-15 03:31:06,160 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:06,161 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068016786] [2019-10-15 03:31:06,161 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:06,161 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:06,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:06,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:06,207 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068016786] [2019-10-15 03:31:06,208 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:06,208 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:06,208 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66928123] [2019-10-15 03:31:06,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:06,209 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:06,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:06,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:06,209 INFO L87 Difference]: Start difference. First operand 452 states and 694 transitions. Second operand 5 states. [2019-10-15 03:31:06,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:06,482 INFO L93 Difference]: Finished difference Result 995 states and 1532 transitions. [2019-10-15 03:31:06,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:06,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2019-10-15 03:31:06,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:06,486 INFO L225 Difference]: With dead ends: 995 [2019-10-15 03:31:06,486 INFO L226 Difference]: Without dead ends: 539 [2019-10-15 03:31:06,488 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:31:06,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2019-10-15 03:31:06,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 492. [2019-10-15 03:31:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2019-10-15 03:31:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 748 transitions. [2019-10-15 03:31:06,508 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 748 transitions. Word has length 46 [2019-10-15 03:31:06,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:06,508 INFO L462 AbstractCegarLoop]: Abstraction has 492 states and 748 transitions. [2019-10-15 03:31:06,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:06,509 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 748 transitions. [2019-10-15 03:31:06,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-15 03:31:06,510 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:06,511 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2019-10-15 03:31:06,511 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:06,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:06,511 INFO L82 PathProgramCache]: Analyzing trace with hash -298078923, now seen corresponding path program 1 times [2019-10-15 03:31:06,511 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:06,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48862871] [2019-10-15 03:31:06,512 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:06,512 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:06,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:31:06,582 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48862871] [2019-10-15 03:31:06,583 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:06,583 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:06,584 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803012331] [2019-10-15 03:31:06,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:06,585 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:06,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:06,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:06,585 INFO L87 Difference]: Start difference. First operand 492 states and 748 transitions. Second operand 5 states. [2019-10-15 03:31:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:06,850 INFO L93 Difference]: Finished difference Result 855 states and 1299 transitions. [2019-10-15 03:31:06,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:06,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2019-10-15 03:31:06,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:06,853 INFO L225 Difference]: With dead ends: 855 [2019-10-15 03:31:06,853 INFO L226 Difference]: Without dead ends: 345 [2019-10-15 03:31:06,854 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:31:06,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2019-10-15 03:31:06,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 323. [2019-10-15 03:31:06,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2019-10-15 03:31:06,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 479 transitions. [2019-10-15 03:31:06,867 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 479 transitions. Word has length 74 [2019-10-15 03:31:06,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:06,867 INFO L462 AbstractCegarLoop]: Abstraction has 323 states and 479 transitions. [2019-10-15 03:31:06,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:06,867 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 479 transitions. [2019-10-15 03:31:06,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-15 03:31:06,869 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:06,869 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:06,869 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:06,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:06,870 INFO L82 PathProgramCache]: Analyzing trace with hash -425057676, now seen corresponding path program 1 times [2019-10-15 03:31:06,870 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:06,870 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117200410] [2019-10-15 03:31:06,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:06,871 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:06,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:06,923 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 03:31:06,924 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117200410] [2019-10-15 03:31:06,924 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:06,924 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:31:06,924 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667159716] [2019-10-15 03:31:06,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:31:06,925 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:06,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:31:06,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:31:06,926 INFO L87 Difference]: Start difference. First operand 323 states and 479 transitions. Second operand 4 states. [2019-10-15 03:31:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:07,119 INFO L93 Difference]: Finished difference Result 678 states and 1019 transitions. [2019-10-15 03:31:07,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:31:07,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2019-10-15 03:31:07,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:07,122 INFO L225 Difference]: With dead ends: 678 [2019-10-15 03:31:07,123 INFO L226 Difference]: Without dead ends: 363 [2019-10-15 03:31:07,124 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:31:07,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2019-10-15 03:31:07,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 356. [2019-10-15 03:31:07,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2019-10-15 03:31:07,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 513 transitions. [2019-10-15 03:31:07,138 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 513 transitions. Word has length 78 [2019-10-15 03:31:07,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:07,138 INFO L462 AbstractCegarLoop]: Abstraction has 356 states and 513 transitions. [2019-10-15 03:31:07,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:31:07,139 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 513 transitions. [2019-10-15 03:31:07,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-15 03:31:07,140 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:07,140 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:07,140 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:07,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:07,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1947129178, now seen corresponding path program 1 times [2019-10-15 03:31:07,141 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:07,141 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656910014] [2019-10-15 03:31:07,141 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:07,141 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:07,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 03:31:07,184 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656910014] [2019-10-15 03:31:07,184 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:07,184 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:31:07,184 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669616073] [2019-10-15 03:31:07,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:31:07,185 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:07,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:31:07,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:07,185 INFO L87 Difference]: Start difference. First operand 356 states and 513 transitions. Second operand 3 states. [2019-10-15 03:31:07,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:07,362 INFO L93 Difference]: Finished difference Result 749 states and 1097 transitions. [2019-10-15 03:31:07,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:31:07,362 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2019-10-15 03:31:07,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:07,365 INFO L225 Difference]: With dead ends: 749 [2019-10-15 03:31:07,365 INFO L226 Difference]: Without dead ends: 401 [2019-10-15 03:31:07,366 INFO L600 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 [2019-10-15 03:31:07,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2019-10-15 03:31:07,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 397. [2019-10-15 03:31:07,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2019-10-15 03:31:07,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 561 transitions. [2019-10-15 03:31:07,379 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 561 transitions. Word has length 87 [2019-10-15 03:31:07,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:07,380 INFO L462 AbstractCegarLoop]: Abstraction has 397 states and 561 transitions. [2019-10-15 03:31:07,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:31:07,380 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 561 transitions. [2019-10-15 03:31:07,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 03:31:07,381 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:07,382 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:07,382 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:07,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:07,382 INFO L82 PathProgramCache]: Analyzing trace with hash 574500426, now seen corresponding path program 1 times [2019-10-15 03:31:07,382 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:07,383 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452889480] [2019-10-15 03:31:07,383 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:07,383 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:07,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 03:31:07,428 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452889480] [2019-10-15 03:31:07,429 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:07,429 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:31:07,429 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845123964] [2019-10-15 03:31:07,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:31:07,430 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:07,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:31:07,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:07,430 INFO L87 Difference]: Start difference. First operand 397 states and 561 transitions. Second operand 3 states. [2019-10-15 03:31:07,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:07,634 INFO L93 Difference]: Finished difference Result 798 states and 1137 transitions. [2019-10-15 03:31:07,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:31:07,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2019-10-15 03:31:07,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:07,637 INFO L225 Difference]: With dead ends: 798 [2019-10-15 03:31:07,637 INFO L226 Difference]: Without dead ends: 409 [2019-10-15 03:31:07,638 INFO L600 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 [2019-10-15 03:31:07,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2019-10-15 03:31:07,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 397. [2019-10-15 03:31:07,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2019-10-15 03:31:07,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 537 transitions. [2019-10-15 03:31:07,665 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 537 transitions. Word has length 100 [2019-10-15 03:31:07,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:07,665 INFO L462 AbstractCegarLoop]: Abstraction has 397 states and 537 transitions. [2019-10-15 03:31:07,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:31:07,665 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 537 transitions. [2019-10-15 03:31:07,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-15 03:31:07,667 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:07,667 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2019-10-15 03:31:07,667 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:07,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:07,668 INFO L82 PathProgramCache]: Analyzing trace with hash 511986579, now seen corresponding path program 1 times [2019-10-15 03:31:07,668 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:07,668 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476614393] [2019-10-15 03:31:07,668 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:07,668 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:07,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:07,740 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476614393] [2019-10-15 03:31:07,740 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864606468] [2019-10-15 03:31:07,740 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 [2019-10-15 03:31:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:07,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 03:31:07,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:31:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:07,901 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:31:07,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:31:07,934 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:31:07,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:31:07,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:31:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-15 03:31:08,008 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2018152618] [2019-10-15 03:31:08,038 INFO L162 IcfgInterpreter]: Started Sifa with 57 locations of interest [2019-10-15 03:31:08,038 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:31:08,045 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:31:08,057 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:31:08,058 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:31:08,133 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:31:08,142 INFO L199 IcfgInterpreter]: Interpreting procedure ssl3_accept with input of size 3 for LOIs [2019-10-15 03:31:09,472 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 196 [2019-10-15 03:31:21,886 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:31:21,888 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:31:22,908 WARN L191 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 153 [2019-10-15 03:31:23,715 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 148 [2019-10-15 03:31:24,463 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 148 [2019-10-15 03:31:25,207 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 151 [2019-10-15 03:31:26,084 WARN L191 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 147 [2019-10-15 03:31:26,894 WARN L191 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 150 [2019-10-15 03:31:27,666 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 153 [2019-10-15 03:31:28,443 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 156 [2019-10-15 03:31:29,218 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 147 [2019-10-15 03:31:29,959 WARN L191 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 152 [2019-10-15 03:31:30,773 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 153 [2019-10-15 03:31:31,859 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 158 [2019-10-15 03:31:32,708 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 161 [2019-10-15 03:31:33,576 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 164 [2019-10-15 03:31:34,398 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 148 [2019-10-15 03:31:35,177 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 149 [2019-10-15 03:31:36,297 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 167 [2019-10-15 03:31:37,219 WARN L191 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 170 [2019-10-15 03:31:38,180 WARN L191 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 173 [2019-10-15 03:31:39,169 WARN L191 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 176 [2019-10-15 03:31:40,158 WARN L191 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 179 [2019-10-15 03:31:41,172 WARN L191 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182