/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_2.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:49:09,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:49:09,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:49:09,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:49:09,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:49:09,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:49:09,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:49:09,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:49:09,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:49:09,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:49:09,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:49:09,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:49:09,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:49:09,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:49:09,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:49:09,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:49:09,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:49:09,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:49:09,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:49:09,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:49:09,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:49:09,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:49:09,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:49:09,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:49:09,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:49:09,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:49:09,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:49:09,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:49:09,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:49:09,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:49:09,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:49:09,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:49:09,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:49:09,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:49:09,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:49:09,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:49:09,487 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 04:49:09,502 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:49:09,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:49:09,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:49:09,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:49:09,504 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:49:09,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:49:09,505 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:49:09,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:49:09,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:49:09,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:49:09,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:49:09,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:49:09,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:49:09,507 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:49:09,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:49:09,508 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:49:09,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:49:09,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:49:09,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:49:09,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:49:09,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:49:09,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:49:09,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:49:09,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:49:09,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:49:09,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:49:09,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:49:09,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:49:09,510 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 04:49:09,773 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:49:09,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:49:09,789 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:49:09,791 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:49:09,791 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:49:09,792 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_2.cil-1.c [2019-11-07 04:49:09,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27bae66cb/3bf38b99991043b0a106432913752e34/FLAGfdfa2e930 [2019-11-07 04:49:10,385 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:49:10,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_clnt_2.cil-1.c [2019-11-07 04:49:10,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27bae66cb/3bf38b99991043b0a106432913752e34/FLAGfdfa2e930 [2019-11-07 04:49:10,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27bae66cb/3bf38b99991043b0a106432913752e34 [2019-11-07 04:49:10,726 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:49:10,727 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:49:10,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:49:10,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:49:10,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:49:10,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:49:10" (1/1) ... [2019-11-07 04:49:10,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170cdf37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:10, skipping insertion in model container [2019-11-07 04:49:10,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:49:10" (1/1) ... [2019-11-07 04:49:10,743 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:49:10,805 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:49:11,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:49:11,051 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:49:11,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:49:11,217 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:49:11,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:11 WrapperNode [2019-11-07 04:49:11,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:49:11,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:49:11,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:49:11,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:49:11,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:11" (1/1) ... [2019-11-07 04:49:11,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:11" (1/1) ... [2019-11-07 04:49:11,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:11" (1/1) ... [2019-11-07 04:49:11,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:11" (1/1) ... [2019-11-07 04:49:11,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:11" (1/1) ... [2019-11-07 04:49:11,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:11" (1/1) ... [2019-11-07 04:49:11,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:11" (1/1) ... [2019-11-07 04:49:11,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:49:11,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:49:11,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:49:11,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:49:11,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:11" (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 04:49:11,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:49:11,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:49:11,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2019-11-07 04:49:11,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:49:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:49:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-07 04:49:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:49:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-11-07 04:49:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 04:49:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2019-11-07 04:49:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:49:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:49:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:49:11,515 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-07 04:49:12,094 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2019-11-07 04:49:12,095 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2019-11-07 04:49:12,478 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:49:12,479 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 04:49:12,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:49:12 BoogieIcfgContainer [2019-11-07 04:49:12,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:49:12,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:49:12,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:49:12,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:49:12,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:49:10" (1/3) ... [2019-11-07 04:49:12,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594337f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:49:12, skipping insertion in model container [2019-11-07 04:49:12,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:11" (2/3) ... [2019-11-07 04:49:12,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594337f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:49:12, skipping insertion in model container [2019-11-07 04:49:12,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:49:12" (3/3) ... [2019-11-07 04:49:12,489 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.cil-1.c [2019-11-07 04:49:12,500 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:49:12,509 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:49:12,521 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:49:12,564 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:49:12,565 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:49:12,565 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:49:12,565 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:49:12,565 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:49:12,565 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:49:12,566 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:49:12,566 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:49:12,605 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-11-07 04:49:12,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-07 04:49:12,615 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:12,616 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 04:49:12,619 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:12,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:12,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1309660893, now seen corresponding path program 1 times [2019-11-07 04:49:12,639 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:12,640 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144968647] [2019-11-07 04:49:12,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:12,951 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 04:49:12,952 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144968647] [2019-11-07 04:49:12,953 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:12,954 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:12,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318587752] [2019-11-07 04:49:12,961 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:12,962 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:12,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:12,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:12,980 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 5 states. [2019-11-07 04:49:13,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:13,296 INFO L93 Difference]: Finished difference Result 212 states and 355 transitions. [2019-11-07 04:49:13,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:13,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-11-07 04:49:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:13,311 INFO L225 Difference]: With dead ends: 212 [2019-11-07 04:49:13,311 INFO L226 Difference]: Without dead ends: 114 [2019-11-07 04:49:13,316 INFO L630 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 [2019-11-07 04:49:13,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-11-07 04:49:13,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2019-11-07 04:49:13,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-11-07 04:49:13,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 162 transitions. [2019-11-07 04:49:13,371 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 162 transitions. Word has length 25 [2019-11-07 04:49:13,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:13,372 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 162 transitions. [2019-11-07 04:49:13,372 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:13,372 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 162 transitions. [2019-11-07 04:49:13,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-07 04:49:13,374 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:13,374 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, 1] [2019-11-07 04:49:13,374 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:13,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:13,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1949467789, now seen corresponding path program 1 times [2019-11-07 04:49:13,375 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:13,375 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15883400] [2019-11-07 04:49:13,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:13,501 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 04:49:13,501 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15883400] [2019-11-07 04:49:13,501 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:13,503 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:13,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943241881] [2019-11-07 04:49:13,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:13,506 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:13,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:13,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:13,507 INFO L87 Difference]: Start difference. First operand 109 states and 162 transitions. Second operand 5 states. [2019-11-07 04:49:13,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:13,801 INFO L93 Difference]: Finished difference Result 238 states and 362 transitions. [2019-11-07 04:49:13,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:13,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-11-07 04:49:13,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:13,808 INFO L225 Difference]: With dead ends: 238 [2019-11-07 04:49:13,808 INFO L226 Difference]: Without dead ends: 136 [2019-11-07 04:49:13,812 INFO L630 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 [2019-11-07 04:49:13,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-11-07 04:49:13,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 131. [2019-11-07 04:49:13,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-11-07 04:49:13,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 201 transitions. [2019-11-07 04:49:13,842 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 201 transitions. Word has length 26 [2019-11-07 04:49:13,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:13,843 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 201 transitions. [2019-11-07 04:49:13,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:13,843 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 201 transitions. [2019-11-07 04:49:13,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-07 04:49:13,846 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:13,847 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:49:13,847 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:13,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:13,848 INFO L82 PathProgramCache]: Analyzing trace with hash 825791782, now seen corresponding path program 1 times [2019-11-07 04:49:13,849 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:13,849 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457736848] [2019-11-07 04:49:13,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:13,992 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:49:13,992 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457736848] [2019-11-07 04:49:13,993 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:13,993 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:13,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702489816] [2019-11-07 04:49:13,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:13,995 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:13,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:13,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:13,999 INFO L87 Difference]: Start difference. First operand 131 states and 201 transitions. Second operand 5 states. [2019-11-07 04:49:14,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:14,237 INFO L93 Difference]: Finished difference Result 276 states and 431 transitions. [2019-11-07 04:49:14,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:14,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-11-07 04:49:14,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:14,240 INFO L225 Difference]: With dead ends: 276 [2019-11-07 04:49:14,241 INFO L226 Difference]: Without dead ends: 152 [2019-11-07 04:49:14,243 INFO L630 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 [2019-11-07 04:49:14,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-07 04:49:14,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2019-11-07 04:49:14,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-07 04:49:14,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 233 transitions. [2019-11-07 04:49:14,265 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 233 transitions. Word has length 43 [2019-11-07 04:49:14,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:14,266 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 233 transitions. [2019-11-07 04:49:14,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:14,266 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 233 transitions. [2019-11-07 04:49:14,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-07 04:49:14,268 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:14,268 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:49:14,269 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:14,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:14,269 INFO L82 PathProgramCache]: Analyzing trace with hash -221294570, now seen corresponding path program 1 times [2019-11-07 04:49:14,269 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:14,269 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738535035] [2019-11-07 04:49:14,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:14,339 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:49:14,339 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738535035] [2019-11-07 04:49:14,340 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:14,340 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:14,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888796966] [2019-11-07 04:49:14,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:14,341 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:14,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:14,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:14,341 INFO L87 Difference]: Start difference. First operand 150 states and 233 transitions. Second operand 5 states. [2019-11-07 04:49:14,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:14,565 INFO L93 Difference]: Finished difference Result 295 states and 461 transitions. [2019-11-07 04:49:14,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:14,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2019-11-07 04:49:14,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:14,568 INFO L225 Difference]: With dead ends: 295 [2019-11-07 04:49:14,568 INFO L226 Difference]: Without dead ends: 152 [2019-11-07 04:49:14,569 INFO L630 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 [2019-11-07 04:49:14,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-07 04:49:14,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2019-11-07 04:49:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-07 04:49:14,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 231 transitions. [2019-11-07 04:49:14,582 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 231 transitions. Word has length 44 [2019-11-07 04:49:14,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:14,582 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 231 transitions. [2019-11-07 04:49:14,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:14,582 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 231 transitions. [2019-11-07 04:49:14,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-07 04:49:14,585 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:14,585 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-11-07 04:49:14,585 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:14,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:14,586 INFO L82 PathProgramCache]: Analyzing trace with hash 993114812, now seen corresponding path program 1 times [2019-11-07 04:49:14,586 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:14,586 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431112753] [2019-11-07 04:49:14,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 04:49:14,667 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431112753] [2019-11-07 04:49:14,668 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:14,668 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:14,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154327712] [2019-11-07 04:49:14,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:14,669 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:14,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:14,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:14,670 INFO L87 Difference]: Start difference. First operand 150 states and 231 transitions. Second operand 5 states. [2019-11-07 04:49:14,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:14,846 INFO L93 Difference]: Finished difference Result 314 states and 490 transitions. [2019-11-07 04:49:14,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:14,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2019-11-07 04:49:14,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:14,848 INFO L225 Difference]: With dead ends: 314 [2019-11-07 04:49:14,848 INFO L226 Difference]: Without dead ends: 171 [2019-11-07 04:49:14,849 INFO L630 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 [2019-11-07 04:49:14,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-11-07 04:49:14,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2019-11-07 04:49:14,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2019-11-07 04:49:14,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 258 transitions. [2019-11-07 04:49:14,861 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 258 transitions. Word has length 59 [2019-11-07 04:49:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:14,861 INFO L462 AbstractCegarLoop]: Abstraction has 167 states and 258 transitions. [2019-11-07 04:49:14,862 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:14,862 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 258 transitions. [2019-11-07 04:49:14,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-07 04:49:14,864 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:14,864 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-11-07 04:49:14,864 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:14,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:14,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1466037684, now seen corresponding path program 1 times [2019-11-07 04:49:14,865 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:14,865 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956216244] [2019-11-07 04:49:14,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:14,933 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 04:49:14,933 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956216244] [2019-11-07 04:49:14,933 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:14,933 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:14,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185990849] [2019-11-07 04:49:14,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:14,935 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:14,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:14,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:14,937 INFO L87 Difference]: Start difference. First operand 167 states and 258 transitions. Second operand 5 states. [2019-11-07 04:49:15,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:15,134 INFO L93 Difference]: Finished difference Result 331 states and 514 transitions. [2019-11-07 04:49:15,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:15,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-11-07 04:49:15,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:15,136 INFO L225 Difference]: With dead ends: 331 [2019-11-07 04:49:15,136 INFO L226 Difference]: Without dead ends: 171 [2019-11-07 04:49:15,136 INFO L630 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 [2019-11-07 04:49:15,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-11-07 04:49:15,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2019-11-07 04:49:15,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2019-11-07 04:49:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 255 transitions. [2019-11-07 04:49:15,146 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 255 transitions. Word has length 60 [2019-11-07 04:49:15,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:15,147 INFO L462 AbstractCegarLoop]: Abstraction has 167 states and 255 transitions. [2019-11-07 04:49:15,147 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:15,147 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 255 transitions. [2019-11-07 04:49:15,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-07 04:49:15,148 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:15,149 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2019-11-07 04:49:15,149 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:15,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:15,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1631946930, now seen corresponding path program 1 times [2019-11-07 04:49:15,149 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:15,150 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958220344] [2019-11-07 04:49:15,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:49:15,203 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958220344] [2019-11-07 04:49:15,203 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:15,204 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:15,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73115530] [2019-11-07 04:49:15,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:15,205 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:15,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:15,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:15,205 INFO L87 Difference]: Start difference. First operand 167 states and 255 transitions. Second operand 5 states. [2019-11-07 04:49:15,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:15,418 INFO L93 Difference]: Finished difference Result 366 states and 570 transitions. [2019-11-07 04:49:15,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:15,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2019-11-07 04:49:15,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:15,420 INFO L225 Difference]: With dead ends: 366 [2019-11-07 04:49:15,421 INFO L226 Difference]: Without dead ends: 205 [2019-11-07 04:49:15,421 INFO L630 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 [2019-11-07 04:49:15,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2019-11-07 04:49:15,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2019-11-07 04:49:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2019-11-07 04:49:15,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 320 transitions. [2019-11-07 04:49:15,433 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 320 transitions. Word has length 62 [2019-11-07 04:49:15,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:15,433 INFO L462 AbstractCegarLoop]: Abstraction has 205 states and 320 transitions. [2019-11-07 04:49:15,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:15,434 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 320 transitions. [2019-11-07 04:49:15,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-11-07 04:49:15,434 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:15,435 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 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 04:49:15,435 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:15,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:15,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1138165896, now seen corresponding path program 1 times [2019-11-07 04:49:15,436 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:15,436 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224685182] [2019-11-07 04:49:15,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 04:49:15,488 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224685182] [2019-11-07 04:49:15,489 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:15,489 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:15,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178154538] [2019-11-07 04:49:15,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:15,490 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:15,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:15,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:15,490 INFO L87 Difference]: Start difference. First operand 205 states and 320 transitions. Second operand 5 states. [2019-11-07 04:49:15,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:15,673 INFO L93 Difference]: Finished difference Result 420 states and 661 transitions. [2019-11-07 04:49:15,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:15,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2019-11-07 04:49:15,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:15,675 INFO L225 Difference]: With dead ends: 420 [2019-11-07 04:49:15,676 INFO L226 Difference]: Without dead ends: 222 [2019-11-07 04:49:15,676 INFO L630 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 [2019-11-07 04:49:15,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2019-11-07 04:49:15,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2019-11-07 04:49:15,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2019-11-07 04:49:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 341 transitions. [2019-11-07 04:49:15,690 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 341 transitions. Word has length 72 [2019-11-07 04:49:15,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:15,691 INFO L462 AbstractCegarLoop]: Abstraction has 220 states and 341 transitions. [2019-11-07 04:49:15,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:15,691 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 341 transitions. [2019-11-07 04:49:15,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-07 04:49:15,692 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:15,692 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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 04:49:15,693 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:15,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:15,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1355859368, now seen corresponding path program 1 times [2019-11-07 04:49:15,693 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:15,694 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070450953] [2019-11-07 04:49:15,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 04:49:15,758 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070450953] [2019-11-07 04:49:15,759 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:15,759 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:15,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274160175] [2019-11-07 04:49:15,759 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:15,760 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:15,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:15,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:15,760 INFO L87 Difference]: Start difference. First operand 220 states and 341 transitions. Second operand 5 states. [2019-11-07 04:49:15,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:15,928 INFO L93 Difference]: Finished difference Result 435 states and 677 transitions. [2019-11-07 04:49:15,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:15,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2019-11-07 04:49:15,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:15,930 INFO L225 Difference]: With dead ends: 435 [2019-11-07 04:49:15,930 INFO L226 Difference]: Without dead ends: 222 [2019-11-07 04:49:15,931 INFO L630 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 [2019-11-07 04:49:15,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2019-11-07 04:49:15,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2019-11-07 04:49:15,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2019-11-07 04:49:15,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 336 transitions. [2019-11-07 04:49:15,943 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 336 transitions. Word has length 73 [2019-11-07 04:49:15,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:15,943 INFO L462 AbstractCegarLoop]: Abstraction has 220 states and 336 transitions. [2019-11-07 04:49:15,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:15,943 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 336 transitions. [2019-11-07 04:49:15,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-07 04:49:15,944 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:15,945 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, 1] [2019-11-07 04:49:15,945 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:15,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:15,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1532506952, now seen corresponding path program 1 times [2019-11-07 04:49:15,945 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:15,946 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366354981] [2019-11-07 04:49:15,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:15,993 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 04:49:15,994 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366354981] [2019-11-07 04:49:15,994 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:15,994 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:15,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806592717] [2019-11-07 04:49:15,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:15,995 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:15,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:15,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:15,996 INFO L87 Difference]: Start difference. First operand 220 states and 336 transitions. Second operand 5 states. [2019-11-07 04:49:16,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:16,162 INFO L93 Difference]: Finished difference Result 448 states and 689 transitions. [2019-11-07 04:49:16,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:16,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2019-11-07 04:49:16,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:16,164 INFO L225 Difference]: With dead ends: 448 [2019-11-07 04:49:16,164 INFO L226 Difference]: Without dead ends: 235 [2019-11-07 04:49:16,165 INFO L630 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 [2019-11-07 04:49:16,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-11-07 04:49:16,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2019-11-07 04:49:16,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-11-07 04:49:16,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 352 transitions. [2019-11-07 04:49:16,179 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 352 transitions. Word has length 83 [2019-11-07 04:49:16,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:16,180 INFO L462 AbstractCegarLoop]: Abstraction has 233 states and 352 transitions. [2019-11-07 04:49:16,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:16,180 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 352 transitions. [2019-11-07 04:49:16,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-11-07 04:49:16,182 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:16,182 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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, 1] [2019-11-07 04:49:16,182 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:16,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:16,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1366319736, now seen corresponding path program 1 times [2019-11-07 04:49:16,183 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:16,183 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474178494] [2019-11-07 04:49:16,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-11-07 04:49:16,229 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474178494] [2019-11-07 04:49:16,230 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:16,230 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:16,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001986583] [2019-11-07 04:49:16,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:16,231 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:16,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:16,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:16,231 INFO L87 Difference]: Start difference. First operand 233 states and 352 transitions. Second operand 5 states. [2019-11-07 04:49:16,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:16,393 INFO L93 Difference]: Finished difference Result 461 states and 699 transitions. [2019-11-07 04:49:16,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:16,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2019-11-07 04:49:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:16,395 INFO L225 Difference]: With dead ends: 461 [2019-11-07 04:49:16,395 INFO L226 Difference]: Without dead ends: 235 [2019-11-07 04:49:16,396 INFO L630 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 [2019-11-07 04:49:16,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-11-07 04:49:16,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2019-11-07 04:49:16,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-11-07 04:49:16,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 346 transitions. [2019-11-07 04:49:16,410 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 346 transitions. Word has length 84 [2019-11-07 04:49:16,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:16,410 INFO L462 AbstractCegarLoop]: Abstraction has 233 states and 346 transitions. [2019-11-07 04:49:16,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:16,410 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 346 transitions. [2019-11-07 04:49:16,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-07 04:49:16,411 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:16,412 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, 1] [2019-11-07 04:49:16,412 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:16,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:16,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1678986295, now seen corresponding path program 1 times [2019-11-07 04:49:16,412 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:16,413 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994925400] [2019-11-07 04:49:16,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:16,523 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 04:49:16,524 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994925400] [2019-11-07 04:49:16,524 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086874811] [2019-11-07 04:49:16,524 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 04:49:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:16,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-07 04:49:16,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:49:16,687 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 04:49:16,687 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:49:16,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:49:16,740 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:49:16,740 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:49:16,786 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 33 proven. 50 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 04:49:16,786 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2009654007] [2019-11-07 04:49:16,816 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2019-11-07 04:49:16,816 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:49:16,823 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:49:16,830 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:49:16,831 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:49:16,885 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:49:16,895 INFO L197 IcfgInterpreter]: Interpreting procedure ssl3_connect with input of size 3 for LOIs [2019-11-07 04:49:18,704 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2019-11-07 04:49:19,114 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-07 04:49:19,234 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-07 04:49:19,448 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 201 [2019-11-07 04:49:19,617 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2019-11-07 04:49:19,903 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2019-11-07 04:49:20,767 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 229 [2019-11-07 04:49:23,585 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 209 [2019-11-07 04:49:25,925 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:49:25,926 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:49:26,834 WARN L191 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 160 [2019-11-07 04:49:27,538 WARN L191 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 141 [2019-11-07 04:49:28,222 WARN L191 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 143 [2019-11-07 04:49:28,954 WARN L191 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 146 [2019-11-07 04:49:29,726 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 152 [2019-11-07 04:49:30,493 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 153 [2019-11-07 04:49:31,297 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 150 [2019-11-07 04:49:32,115 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 152 [2019-11-07 04:49:32,820 WARN L191 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 146 [2019-11-07 04:49:33,672 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 158 [2019-11-07 04:49:34,419 WARN L191 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2019-11-07 04:49:35,164 WARN L191 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 148 [2019-11-07 04:49:36,054 WARN L191 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 151 [2019-11-07 04:49:36,982 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 143 [2019-11-07 04:49:37,836 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 152 [2019-11-07 04:49:38,967 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 153 [2019-11-07 04:49:39,847 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 156 [2019-11-07 04:49:40,670 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 144 [2019-11-07 04:49:41,526 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 148 [2019-11-07 04:49:42,689 WARN L191 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 157 [2019-11-07 04:49:43,627 WARN L191 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 160 [2019-11-07 04:49:44,611 WARN L191 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 158 [2019-11-07 04:49:46,113 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 219 DAG size of output: 159 [2019-11-07 04:49:47,088 WARN L191 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 163 [2019-11-07 04:49:48,238 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 161 [2019-11-07 04:49:49,242 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 164 [2019-11-07 04:49:50,167 WARN L191 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 156