/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_4.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:49:54,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:49:54,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:49:54,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:49:54,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:49:54,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:49:54,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:49:54,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:49:54,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:49:54,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:49:54,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:49:54,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:49:54,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:49:54,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:49:54,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:49:54,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:49:54,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:49:54,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:49:54,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:49:54,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:49:54,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:49:54,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:49:54,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:49:54,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:49:54,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:49:54,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:49:54,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:49:54,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:49:54,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:49:54,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:49:54,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:49:54,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:49:54,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:49:54,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:49:54,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:49:54,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:49:54,335 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 04:49:54,349 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:49:54,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:49:54,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:49:54,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:49:54,351 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:49:54,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:49:54,352 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:49:54,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:49:54,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:49:54,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:49:54,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:49:54,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:49:54,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:49:54,353 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:49:54,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:49:54,354 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:49:54,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:49:54,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:49:54,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:49:54,355 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:49:54,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:49:54,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:49:54,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:49:54,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:49:54,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:49:54,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:49:54,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:49:54,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:49:54,357 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 04:49:54,659 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:49:54,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:49:54,676 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:49:54,677 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:49:54,678 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:49:54,678 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_4.cil-2.c [2019-11-07 04:49:54,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/529f7dd2a/6a293e40d65a479eae41335b6092e737/FLAG701ad6b5c [2019-11-07 04:49:55,246 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:49:55,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_clnt_4.cil-2.c [2019-11-07 04:49:55,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/529f7dd2a/6a293e40d65a479eae41335b6092e737/FLAG701ad6b5c [2019-11-07 04:49:55,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/529f7dd2a/6a293e40d65a479eae41335b6092e737 [2019-11-07 04:49:55,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:49:55,604 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:49:55,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:49:55,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:49:55,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:49:55,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:49:55" (1/1) ... [2019-11-07 04:49:55,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f1ad2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:55, skipping insertion in model container [2019-11-07 04:49:55,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:49:55" (1/1) ... [2019-11-07 04:49:55,624 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:49:55,683 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:49:55,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:49:55,967 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:49:56,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:49:56,140 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:49:56,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:56 WrapperNode [2019-11-07 04:49:56,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:49:56,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:49:56,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:49:56,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:49:56,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:56" (1/1) ... [2019-11-07 04:49:56,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:56" (1/1) ... [2019-11-07 04:49:56,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:56" (1/1) ... [2019-11-07 04:49:56,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:56" (1/1) ... [2019-11-07 04:49:56,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:56" (1/1) ... [2019-11-07 04:49:56,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:56" (1/1) ... [2019-11-07 04:49:56,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:56" (1/1) ... [2019-11-07 04:49:56,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:49:56,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:49:56,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:49:56,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:49:56,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:56" (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 04:49:56,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:49:56,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:49:56,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2019-11-07 04:49:56,278 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:49:56,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:49:56,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-07 04:49:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:49:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-11-07 04:49:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 04:49:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2019-11-07 04:49:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:49:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:49:56,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:49:56,435 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-07 04:49:56,988 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2019-11-07 04:49:56,989 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2019-11-07 04:49:57,425 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:49:57,426 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 04:49:57,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:49:57 BoogieIcfgContainer [2019-11-07 04:49:57,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:49:57,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:49:57,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:49:57,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:49:57,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:49:55" (1/3) ... [2019-11-07 04:49:57,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65cb0013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:49:57, skipping insertion in model container [2019-11-07 04:49:57,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:56" (2/3) ... [2019-11-07 04:49:57,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65cb0013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:49:57, skipping insertion in model container [2019-11-07 04:49:57,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:49:57" (3/3) ... [2019-11-07 04:49:57,437 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_4.cil-2.c [2019-11-07 04:49:57,449 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:49:57,458 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:49:57,473 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:49:57,501 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:49:57,501 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:49:57,501 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:49:57,502 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:49:57,502 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:49:57,502 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:49:57,502 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:49:57,502 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:49:57,526 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-11-07 04:49:57,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-07 04:49:57,534 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:57,535 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 04:49:57,537 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:57,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:57,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1309660893, now seen corresponding path program 1 times [2019-11-07 04:49:57,554 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:57,554 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034323223] [2019-11-07 04:49:57,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:57,834 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 04:49:57,835 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034323223] [2019-11-07 04:49:57,836 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:57,837 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:57,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662576849] [2019-11-07 04:49:57,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:57,845 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:57,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:57,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:57,863 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 5 states. [2019-11-07 04:49:58,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:58,210 INFO L93 Difference]: Finished difference Result 212 states and 355 transitions. [2019-11-07 04:49:58,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:58,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-11-07 04:49:58,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:58,237 INFO L225 Difference]: With dead ends: 212 [2019-11-07 04:49:58,238 INFO L226 Difference]: Without dead ends: 114 [2019-11-07 04:49:58,246 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 04:49:58,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-11-07 04:49:58,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2019-11-07 04:49:58,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-11-07 04:49:58,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 162 transitions. [2019-11-07 04:49:58,364 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 162 transitions. Word has length 25 [2019-11-07 04:49:58,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:58,366 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 162 transitions. [2019-11-07 04:49:58,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:58,367 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 162 transitions. [2019-11-07 04:49:58,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-07 04:49:58,370 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:58,371 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 04:49:58,372 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:58,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:58,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1949467789, now seen corresponding path program 1 times [2019-11-07 04:49:58,373 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:58,373 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329877253] [2019-11-07 04:49:58,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:58,525 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 04:49:58,525 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329877253] [2019-11-07 04:49:58,526 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:58,526 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:58,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518874878] [2019-11-07 04:49:58,528 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:58,529 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:58,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:58,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:58,530 INFO L87 Difference]: Start difference. First operand 109 states and 162 transitions. Second operand 5 states. [2019-11-07 04:49:58,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:58,800 INFO L93 Difference]: Finished difference Result 238 states and 362 transitions. [2019-11-07 04:49:58,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:58,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-11-07 04:49:58,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:58,803 INFO L225 Difference]: With dead ends: 238 [2019-11-07 04:49:58,803 INFO L226 Difference]: Without dead ends: 136 [2019-11-07 04:49:58,805 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 04:49:58,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-11-07 04:49:58,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 131. [2019-11-07 04:49:58,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-11-07 04:49:58,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 201 transitions. [2019-11-07 04:49:58,822 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 201 transitions. Word has length 26 [2019-11-07 04:49:58,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:58,822 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 201 transitions. [2019-11-07 04:49:58,822 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:58,823 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 201 transitions. [2019-11-07 04:49:58,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-07 04:49:58,827 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:58,827 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 04:49:58,827 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:58,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:58,829 INFO L82 PathProgramCache]: Analyzing trace with hash -979646552, now seen corresponding path program 1 times [2019-11-07 04:49:58,829 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:58,829 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694620035] [2019-11-07 04:49:58,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:58,964 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 04:49:58,965 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694620035] [2019-11-07 04:49:58,965 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:58,965 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:58,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852607666] [2019-11-07 04:49:58,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:58,967 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:58,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:58,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:58,970 INFO L87 Difference]: Start difference. First operand 131 states and 201 transitions. Second operand 5 states. [2019-11-07 04:49:59,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:59,210 INFO L93 Difference]: Finished difference Result 276 states and 431 transitions. [2019-11-07 04:49:59,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:59,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-11-07 04:49:59,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:59,212 INFO L225 Difference]: With dead ends: 276 [2019-11-07 04:49:59,212 INFO L226 Difference]: Without dead ends: 152 [2019-11-07 04:49:59,215 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 04:49:59,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-07 04:49:59,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2019-11-07 04:49:59,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-07 04:49:59,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 233 transitions. [2019-11-07 04:49:59,242 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 233 transitions. Word has length 43 [2019-11-07 04:49:59,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:59,245 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 233 transitions. [2019-11-07 04:49:59,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:59,246 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 233 transitions. [2019-11-07 04:49:59,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-07 04:49:59,248 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:59,248 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 04:49:59,248 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:59,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:59,250 INFO L82 PathProgramCache]: Analyzing trace with hash -2026732904, now seen corresponding path program 1 times [2019-11-07 04:49:59,250 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:59,251 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006077859] [2019-11-07 04:49:59,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:59,360 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 04:49:59,360 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006077859] [2019-11-07 04:49:59,360 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:59,361 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:59,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957081963] [2019-11-07 04:49:59,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:59,362 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:59,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:59,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:59,363 INFO L87 Difference]: Start difference. First operand 150 states and 233 transitions. Second operand 5 states. [2019-11-07 04:49:59,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:59,560 INFO L93 Difference]: Finished difference Result 295 states and 461 transitions. [2019-11-07 04:49:59,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:59,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2019-11-07 04:49:59,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:59,562 INFO L225 Difference]: With dead ends: 295 [2019-11-07 04:49:59,562 INFO L226 Difference]: Without dead ends: 152 [2019-11-07 04:49:59,563 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 04:49:59,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-07 04:49:59,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2019-11-07 04:49:59,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-07 04:49:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 231 transitions. [2019-11-07 04:49:59,576 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 231 transitions. Word has length 44 [2019-11-07 04:49:59,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:59,576 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 231 transitions. [2019-11-07 04:49:59,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:59,576 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 231 transitions. [2019-11-07 04:49:59,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-07 04:49:59,583 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:59,584 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 04:49:59,584 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:59,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:59,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1558077918, now seen corresponding path program 1 times [2019-11-07 04:49:59,585 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:59,585 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272678323] [2019-11-07 04:49:59,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:59,674 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 04:49:59,675 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272678323] [2019-11-07 04:49:59,675 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:59,675 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:59,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4476194] [2019-11-07 04:49:59,677 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:59,678 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:59,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:59,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:59,679 INFO L87 Difference]: Start difference. First operand 150 states and 231 transitions. Second operand 5 states. [2019-11-07 04:49:59,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:59,868 INFO L93 Difference]: Finished difference Result 314 states and 490 transitions. [2019-11-07 04:49:59,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:59,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2019-11-07 04:49:59,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:59,870 INFO L225 Difference]: With dead ends: 314 [2019-11-07 04:49:59,870 INFO L226 Difference]: Without dead ends: 171 [2019-11-07 04:49:59,871 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 04:49:59,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-11-07 04:49:59,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2019-11-07 04:49:59,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2019-11-07 04:49:59,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 258 transitions. [2019-11-07 04:49:59,882 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 258 transitions. Word has length 59 [2019-11-07 04:49:59,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:59,882 INFO L462 AbstractCegarLoop]: Abstraction has 167 states and 258 transitions. [2019-11-07 04:49:59,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:59,883 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 258 transitions. [2019-11-07 04:49:59,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-07 04:49:59,885 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:59,885 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 04:49:59,886 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:59,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:59,886 INFO L82 PathProgramCache]: Analyzing trace with hash -901074578, now seen corresponding path program 1 times [2019-11-07 04:49:59,886 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:59,887 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699696906] [2019-11-07 04:49:59,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:59,949 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 04:49:59,949 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699696906] [2019-11-07 04:49:59,953 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:59,953 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:59,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509691853] [2019-11-07 04:49:59,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:59,954 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:59,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:59,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:59,955 INFO L87 Difference]: Start difference. First operand 167 states and 258 transitions. Second operand 5 states. [2019-11-07 04:50:00,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:50:00,175 INFO L93 Difference]: Finished difference Result 331 states and 514 transitions. [2019-11-07 04:50:00,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:50:00,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-11-07 04:50:00,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:50:00,177 INFO L225 Difference]: With dead ends: 331 [2019-11-07 04:50:00,177 INFO L226 Difference]: Without dead ends: 171 [2019-11-07 04:50:00,178 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 04:50:00,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-11-07 04:50:00,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2019-11-07 04:50:00,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2019-11-07 04:50:00,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 255 transitions. [2019-11-07 04:50:00,189 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 255 transitions. Word has length 60 [2019-11-07 04:50:00,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:50:00,189 INFO L462 AbstractCegarLoop]: Abstraction has 167 states and 255 transitions. [2019-11-07 04:50:00,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:50:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 255 transitions. [2019-11-07 04:50:00,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-07 04:50:00,191 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:50:00,192 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 04:50:00,192 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:50:00,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:50:00,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1631946930, now seen corresponding path program 1 times [2019-11-07 04:50:00,193 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:50:00,193 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672156258] [2019-11-07 04:50:00,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:50:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:50:00,246 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 04:50:00,247 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672156258] [2019-11-07 04:50:00,247 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:50:00,247 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:50:00,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028494322] [2019-11-07 04:50:00,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:50:00,248 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:50:00,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:50:00,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:50:00,249 INFO L87 Difference]: Start difference. First operand 167 states and 255 transitions. Second operand 5 states. [2019-11-07 04:50:00,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:50:00,445 INFO L93 Difference]: Finished difference Result 366 states and 570 transitions. [2019-11-07 04:50:00,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:50:00,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2019-11-07 04:50:00,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:50:00,447 INFO L225 Difference]: With dead ends: 366 [2019-11-07 04:50:00,447 INFO L226 Difference]: Without dead ends: 205 [2019-11-07 04:50:00,448 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 04:50:00,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2019-11-07 04:50:00,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2019-11-07 04:50:00,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2019-11-07 04:50:00,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 320 transitions. [2019-11-07 04:50:00,459 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 320 transitions. Word has length 62 [2019-11-07 04:50:00,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:50:00,459 INFO L462 AbstractCegarLoop]: Abstraction has 205 states and 320 transitions. [2019-11-07 04:50:00,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:50:00,460 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 320 transitions. [2019-11-07 04:50:00,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-11-07 04:50:00,461 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:50:00,462 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 04:50:00,462 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:50:00,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:50:00,462 INFO L82 PathProgramCache]: Analyzing trace with hash -344124922, now seen corresponding path program 1 times [2019-11-07 04:50:00,463 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:50:00,463 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270185919] [2019-11-07 04:50:00,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:50:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:50:00,513 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 04:50:00,513 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270185919] [2019-11-07 04:50:00,514 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:50:00,514 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:50:00,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256291148] [2019-11-07 04:50:00,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:50:00,515 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:50:00,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:50:00,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:50:00,516 INFO L87 Difference]: Start difference. First operand 205 states and 320 transitions. Second operand 5 states. [2019-11-07 04:50:00,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:50:00,686 INFO L93 Difference]: Finished difference Result 420 states and 661 transitions. [2019-11-07 04:50:00,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:50:00,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2019-11-07 04:50:00,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:50:00,689 INFO L225 Difference]: With dead ends: 420 [2019-11-07 04:50:00,689 INFO L226 Difference]: Without dead ends: 222 [2019-11-07 04:50:00,690 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 04:50:00,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2019-11-07 04:50:00,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2019-11-07 04:50:00,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2019-11-07 04:50:00,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 341 transitions. [2019-11-07 04:50:00,709 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 341 transitions. Word has length 72 [2019-11-07 04:50:00,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:50:00,709 INFO L462 AbstractCegarLoop]: Abstraction has 220 states and 341 transitions. [2019-11-07 04:50:00,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:50:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 341 transitions. [2019-11-07 04:50:00,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-07 04:50:00,711 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:50:00,711 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 04:50:00,711 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:50:00,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:50:00,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1456817110, now seen corresponding path program 1 times [2019-11-07 04:50:00,712 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:50:00,712 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215854054] [2019-11-07 04:50:00,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:50:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:50:00,783 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 04:50:00,784 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215854054] [2019-11-07 04:50:00,784 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:50:00,784 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:50:00,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292138581] [2019-11-07 04:50:00,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:50:00,785 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:50:00,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:50:00,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:50:00,786 INFO L87 Difference]: Start difference. First operand 220 states and 341 transitions. Second operand 5 states. [2019-11-07 04:50:00,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:50:00,973 INFO L93 Difference]: Finished difference Result 435 states and 677 transitions. [2019-11-07 04:50:00,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:50:00,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2019-11-07 04:50:00,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:50:00,976 INFO L225 Difference]: With dead ends: 435 [2019-11-07 04:50:00,976 INFO L226 Difference]: Without dead ends: 222 [2019-11-07 04:50:00,977 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 04:50:00,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2019-11-07 04:50:00,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2019-11-07 04:50:00,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2019-11-07 04:50:00,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 336 transitions. [2019-11-07 04:50:00,988 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 336 transitions. Word has length 73 [2019-11-07 04:50:00,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:50:00,988 INFO L462 AbstractCegarLoop]: Abstraction has 220 states and 336 transitions. [2019-11-07 04:50:00,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:50:00,989 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 336 transitions. [2019-11-07 04:50:00,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-07 04:50:00,990 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:50:00,990 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 04:50:00,990 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:50:00,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:50:00,991 INFO L82 PathProgramCache]: Analyzing trace with hash 164906511, now seen corresponding path program 1 times [2019-11-07 04:50:00,991 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:50:00,991 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660985794] [2019-11-07 04:50:00,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:50:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:50:01,038 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 04:50:01,038 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660985794] [2019-11-07 04:50:01,039 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:50:01,039 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:50:01,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182122675] [2019-11-07 04:50:01,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:50:01,040 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:50:01,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:50:01,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:50:01,041 INFO L87 Difference]: Start difference. First operand 220 states and 336 transitions. Second operand 5 states. [2019-11-07 04:50:01,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:50:01,193 INFO L93 Difference]: Finished difference Result 448 states and 689 transitions. [2019-11-07 04:50:01,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:50:01,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2019-11-07 04:50:01,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:50:01,196 INFO L225 Difference]: With dead ends: 448 [2019-11-07 04:50:01,196 INFO L226 Difference]: Without dead ends: 235 [2019-11-07 04:50:01,197 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 04:50:01,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-11-07 04:50:01,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2019-11-07 04:50:01,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-11-07 04:50:01,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 352 transitions. [2019-11-07 04:50:01,209 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 352 transitions. Word has length 83 [2019-11-07 04:50:01,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:50:01,209 INFO L462 AbstractCegarLoop]: Abstraction has 233 states and 352 transitions. [2019-11-07 04:50:01,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:50:01,209 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 352 transitions. [2019-11-07 04:50:01,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-11-07 04:50:01,211 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:50:01,211 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 04:50:01,211 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:50:01,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:50:01,212 INFO L82 PathProgramCache]: Analyzing trace with hash 331093727, now seen corresponding path program 1 times [2019-11-07 04:50:01,212 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:50:01,212 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476939594] [2019-11-07 04:50:01,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:50:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:50:01,271 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 04:50:01,272 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476939594] [2019-11-07 04:50:01,272 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:50:01,272 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:50:01,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211818435] [2019-11-07 04:50:01,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:50:01,273 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:50:01,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:50:01,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:50:01,274 INFO L87 Difference]: Start difference. First operand 233 states and 352 transitions. Second operand 5 states. [2019-11-07 04:50:01,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:50:01,444 INFO L93 Difference]: Finished difference Result 461 states and 699 transitions. [2019-11-07 04:50:01,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:50:01,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2019-11-07 04:50:01,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:50:01,447 INFO L225 Difference]: With dead ends: 461 [2019-11-07 04:50:01,447 INFO L226 Difference]: Without dead ends: 235 [2019-11-07 04:50:01,448 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 04:50:01,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-11-07 04:50:01,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2019-11-07 04:50:01,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-11-07 04:50:01,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 346 transitions. [2019-11-07 04:50:01,460 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 346 transitions. Word has length 84 [2019-11-07 04:50:01,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:50:01,460 INFO L462 AbstractCegarLoop]: Abstraction has 233 states and 346 transitions. [2019-11-07 04:50:01,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:50:01,461 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 346 transitions. [2019-11-07 04:50:01,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-07 04:50:01,462 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:50:01,462 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 04:50:01,463 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:50:01,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:50:01,463 INFO L82 PathProgramCache]: Analyzing trace with hash -918567538, now seen corresponding path program 1 times [2019-11-07 04:50:01,463 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:50:01,463 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199950700] [2019-11-07 04:50:01,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:50:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:50:01,570 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 04:50:01,571 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199950700] [2019-11-07 04:50:01,571 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358930629] [2019-11-07 04:50:01,571 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 04:50:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:50:01,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-07 04:50:01,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:50:01,709 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 04:50:01,710 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:50:01,751 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:50:01,765 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:50:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-07 04:50:01,811 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1796821076] [2019-11-07 04:50:01,881 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2019-11-07 04:50:01,881 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:50:01,889 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:50:01,898 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:50:01,898 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:50:01,957 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:50:01,965 INFO L197 IcfgInterpreter]: Interpreting procedure ssl3_connect with input of size 3 for LOIs