/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_3.cil-3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:49:35,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:49:35,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:49:35,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:49:35,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:49:35,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:49:35,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:49:35,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:49:35,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:49:35,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:49:35,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:49:35,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:49:35,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:49:35,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:49:35,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:49:35,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:49:35,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:49:35,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:49:35,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:49:35,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:49:35,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:49:35,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:49:35,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:49:35,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:49:35,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:49:35,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:49:35,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:49:35,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:49:35,773 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 04:49:35,794 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:49:35,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:49:35,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:49:35,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:49:35,796 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:49:35,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:49:35,797 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:49:35,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:49:35,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:49:35,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:49:35,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:49:35,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:49:35,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:49:35,799 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:49:35,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:49:35,800 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:49:35,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:49:35,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:49:35,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:49:35,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:49:35,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:49:35,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:49:35,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:49:35,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:49:35,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:49:35,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:49:35,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:49:35,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:49:35,803 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 04:49:36,095 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:49:36,108 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:49:36,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:49:36,113 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:49:36,113 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:49:36,114 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_3.cil-3.c [2019-11-07 04:49:36,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/987282709/9f2dd5967ba8413a89baab5abf4a9696/FLAG8f31003af [2019-11-07 04:49:36,728 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:49:36,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_clnt_3.cil-3.c [2019-11-07 04:49:36,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/987282709/9f2dd5967ba8413a89baab5abf4a9696/FLAG8f31003af [2019-11-07 04:49:37,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/987282709/9f2dd5967ba8413a89baab5abf4a9696 [2019-11-07 04:49:37,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:49:37,069 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:49:37,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:49:37,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:49:37,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:49:37,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:49:37" (1/1) ... [2019-11-07 04:49:37,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf87aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:37, skipping insertion in model container [2019-11-07 04:49:37,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:49:37" (1/1) ... [2019-11-07 04:49:37,088 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:49:37,145 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:49:37,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:49:37,401 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:49:37,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:49:37,613 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:49:37,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:37 WrapperNode [2019-11-07 04:49:37,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:49:37,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:49:37,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:49:37,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:49:37,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:37" (1/1) ... [2019-11-07 04:49:37,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:37" (1/1) ... [2019-11-07 04:49:37,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:37" (1/1) ... [2019-11-07 04:49:37,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:37" (1/1) ... [2019-11-07 04:49:37,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:37" (1/1) ... [2019-11-07 04:49:37,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:37" (1/1) ... [2019-11-07 04:49:37,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:37" (1/1) ... [2019-11-07 04:49:37,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:49:37,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:49:37,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:49:37,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:49:37,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:37" (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 04:49:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:49:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:49:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2019-11-07 04:49:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:49:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:49:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-07 04:49:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:49:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-11-07 04:49:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 04:49:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2019-11-07 04:49:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:49:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:49:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:49:37,898 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-07 04:49:38,512 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2019-11-07 04:49:38,512 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2019-11-07 04:49:38,891 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:49:38,891 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 04:49:38,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:49:38 BoogieIcfgContainer [2019-11-07 04:49:38,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:49:38,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:49:38,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:49:38,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:49:38,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:49:37" (1/3) ... [2019-11-07 04:49:38,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bac2d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:49:38, skipping insertion in model container [2019-11-07 04:49:38,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:37" (2/3) ... [2019-11-07 04:49:38,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bac2d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:49:38, skipping insertion in model container [2019-11-07 04:49:38,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:49:38" (3/3) ... [2019-11-07 04:49:38,904 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.cil-3.c [2019-11-07 04:49:38,913 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:49:38,922 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:49:38,935 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:49:38,962 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:49:38,962 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:49:38,963 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:49:38,963 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:49:38,963 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:49:38,963 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:49:38,964 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:49:38,964 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:49:39,005 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-11-07 04:49:39,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-07 04:49:39,012 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:39,014 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 04:49:39,016 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:39,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:39,022 INFO L82 PathProgramCache]: Analyzing trace with hash -842997927, now seen corresponding path program 1 times [2019-11-07 04:49:39,030 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:39,030 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064816873] [2019-11-07 04:49:39,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:39,349 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 04:49:39,350 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064816873] [2019-11-07 04:49:39,351 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:39,351 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:39,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782612475] [2019-11-07 04:49:39,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:39,358 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:39,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:39,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:39,375 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 5 states. [2019-11-07 04:49:39,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:39,774 INFO L93 Difference]: Finished difference Result 212 states and 355 transitions. [2019-11-07 04:49:39,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:39,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-11-07 04:49:39,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:39,797 INFO L225 Difference]: With dead ends: 212 [2019-11-07 04:49:39,798 INFO L226 Difference]: Without dead ends: 114 [2019-11-07 04:49:39,805 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 04:49:39,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-11-07 04:49:39,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2019-11-07 04:49:39,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-11-07 04:49:39,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 162 transitions. [2019-11-07 04:49:39,858 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 162 transitions. Word has length 25 [2019-11-07 04:49:39,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:39,859 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 162 transitions. [2019-11-07 04:49:39,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:39,859 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 162 transitions. [2019-11-07 04:49:39,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-07 04:49:39,861 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:39,861 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 04:49:39,861 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:39,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:39,862 INFO L82 PathProgramCache]: Analyzing trace with hash -367817731, now seen corresponding path program 1 times [2019-11-07 04:49:39,862 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:39,862 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732302127] [2019-11-07 04:49:39,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:39,972 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 04:49:39,972 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732302127] [2019-11-07 04:49:39,975 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:39,975 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:39,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823082208] [2019-11-07 04:49:39,979 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:39,979 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:39,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:39,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:39,980 INFO L87 Difference]: Start difference. First operand 109 states and 162 transitions. Second operand 5 states. [2019-11-07 04:49:40,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:40,262 INFO L93 Difference]: Finished difference Result 238 states and 362 transitions. [2019-11-07 04:49:40,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:40,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-11-07 04:49:40,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:40,265 INFO L225 Difference]: With dead ends: 238 [2019-11-07 04:49:40,267 INFO L226 Difference]: Without dead ends: 136 [2019-11-07 04:49:40,270 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 04:49:40,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-11-07 04:49:40,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 131. [2019-11-07 04:49:40,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-11-07 04:49:40,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 201 transitions. [2019-11-07 04:49:40,303 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 201 transitions. Word has length 26 [2019-11-07 04:49:40,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:40,306 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 201 transitions. [2019-11-07 04:49:40,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:40,306 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 201 transitions. [2019-11-07 04:49:40,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-07 04:49:40,308 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:40,308 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 04:49:40,308 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:40,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:40,310 INFO L82 PathProgramCache]: Analyzing trace with hash -410142333, now seen corresponding path program 1 times [2019-11-07 04:49:40,310 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:40,310 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377886691] [2019-11-07 04:49:40,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:40,433 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 04:49:40,434 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377886691] [2019-11-07 04:49:40,434 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:40,434 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:40,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611672272] [2019-11-07 04:49:40,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:40,438 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:40,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:40,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:40,441 INFO L87 Difference]: Start difference. First operand 131 states and 201 transitions. Second operand 5 states. [2019-11-07 04:49:40,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:40,715 INFO L93 Difference]: Finished difference Result 276 states and 431 transitions. [2019-11-07 04:49:40,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:40,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-11-07 04:49:40,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:40,717 INFO L225 Difference]: With dead ends: 276 [2019-11-07 04:49:40,721 INFO L226 Difference]: Without dead ends: 152 [2019-11-07 04:49:40,722 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 04:49:40,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-07 04:49:40,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2019-11-07 04:49:40,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-07 04:49:40,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 233 transitions. [2019-11-07 04:49:40,750 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 233 transitions. Word has length 43 [2019-11-07 04:49:40,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:40,753 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 233 transitions. [2019-11-07 04:49:40,753 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:40,753 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 233 transitions. [2019-11-07 04:49:40,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-07 04:49:40,755 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:40,757 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 04:49:40,757 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:40,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:40,758 INFO L82 PathProgramCache]: Analyzing trace with hash 2057265607, now seen corresponding path program 1 times [2019-11-07 04:49:40,758 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:40,758 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266048254] [2019-11-07 04:49:40,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:40,863 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 04:49:40,867 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266048254] [2019-11-07 04:49:40,868 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:40,868 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:40,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061757019] [2019-11-07 04:49:40,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:40,869 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:40,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:40,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:40,870 INFO L87 Difference]: Start difference. First operand 150 states and 233 transitions. Second operand 5 states. [2019-11-07 04:49:41,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:41,078 INFO L93 Difference]: Finished difference Result 295 states and 461 transitions. [2019-11-07 04:49:41,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:41,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2019-11-07 04:49:41,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:41,081 INFO L225 Difference]: With dead ends: 295 [2019-11-07 04:49:41,081 INFO L226 Difference]: Without dead ends: 152 [2019-11-07 04:49:41,082 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 04:49:41,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-07 04:49:41,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2019-11-07 04:49:41,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-07 04:49:41,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 231 transitions. [2019-11-07 04:49:41,112 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 231 transitions. Word has length 44 [2019-11-07 04:49:41,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:41,112 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 231 transitions. [2019-11-07 04:49:41,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:41,113 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 231 transitions. [2019-11-07 04:49:41,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-07 04:49:41,115 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:41,115 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 04:49:41,116 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:41,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:41,116 INFO L82 PathProgramCache]: Analyzing trace with hash -2136923177, now seen corresponding path program 1 times [2019-11-07 04:49:41,116 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:41,117 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582164752] [2019-11-07 04:49:41,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:41,196 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 04:49:41,197 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582164752] [2019-11-07 04:49:41,197 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:41,197 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:41,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472799529] [2019-11-07 04:49:41,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:41,198 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:41,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:41,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:41,199 INFO L87 Difference]: Start difference. First operand 150 states and 231 transitions. Second operand 5 states. [2019-11-07 04:49:41,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:41,396 INFO L93 Difference]: Finished difference Result 314 states and 490 transitions. [2019-11-07 04:49:41,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:41,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2019-11-07 04:49:41,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:41,398 INFO L225 Difference]: With dead ends: 314 [2019-11-07 04:49:41,398 INFO L226 Difference]: Without dead ends: 171 [2019-11-07 04:49:41,402 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 04:49:41,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-11-07 04:49:41,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2019-11-07 04:49:41,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2019-11-07 04:49:41,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 258 transitions. [2019-11-07 04:49:41,418 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 258 transitions. Word has length 59 [2019-11-07 04:49:41,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:41,418 INFO L462 AbstractCegarLoop]: Abstraction has 167 states and 258 transitions. [2019-11-07 04:49:41,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:41,418 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 258 transitions. [2019-11-07 04:49:41,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-07 04:49:41,424 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:41,424 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 04:49:41,425 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:41,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:41,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1170946235, now seen corresponding path program 1 times [2019-11-07 04:49:41,428 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:41,429 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803005901] [2019-11-07 04:49:41,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:41,498 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 04:49:41,498 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803005901] [2019-11-07 04:49:41,500 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:41,500 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:41,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853795889] [2019-11-07 04:49:41,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:41,503 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:41,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:41,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:41,503 INFO L87 Difference]: Start difference. First operand 167 states and 258 transitions. Second operand 5 states. [2019-11-07 04:49:41,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:41,683 INFO L93 Difference]: Finished difference Result 331 states and 514 transitions. [2019-11-07 04:49:41,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:41,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-11-07 04:49:41,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:41,685 INFO L225 Difference]: With dead ends: 331 [2019-11-07 04:49:41,685 INFO L226 Difference]: Without dead ends: 171 [2019-11-07 04:49:41,686 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 04:49:41,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-11-07 04:49:41,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2019-11-07 04:49:41,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2019-11-07 04:49:41,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 255 transitions. [2019-11-07 04:49:41,699 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 255 transitions. Word has length 60 [2019-11-07 04:49:41,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:41,699 INFO L462 AbstractCegarLoop]: Abstraction has 167 states and 255 transitions. [2019-11-07 04:49:41,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:41,700 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 255 transitions. [2019-11-07 04:49:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-07 04:49:41,703 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:41,703 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 04:49:41,704 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:41,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:41,704 INFO L82 PathProgramCache]: Analyzing trace with hash -596566892, now seen corresponding path program 1 times [2019-11-07 04:49:41,704 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:41,705 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442364514] [2019-11-07 04:49:41,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:41,817 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 04:49:41,818 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442364514] [2019-11-07 04:49:41,818 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:41,818 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:41,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405756367] [2019-11-07 04:49:41,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:41,819 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:41,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:41,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:41,821 INFO L87 Difference]: Start difference. First operand 167 states and 255 transitions. Second operand 5 states. [2019-11-07 04:49:42,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:42,020 INFO L93 Difference]: Finished difference Result 366 states and 570 transitions. [2019-11-07 04:49:42,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:42,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2019-11-07 04:49:42,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:42,022 INFO L225 Difference]: With dead ends: 366 [2019-11-07 04:49:42,022 INFO L226 Difference]: Without dead ends: 205 [2019-11-07 04:49:42,023 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 04:49:42,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2019-11-07 04:49:42,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2019-11-07 04:49:42,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2019-11-07 04:49:42,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 320 transitions. [2019-11-07 04:49:42,034 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 320 transitions. Word has length 62 [2019-11-07 04:49:42,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:42,035 INFO L462 AbstractCegarLoop]: Abstraction has 205 states and 320 transitions. [2019-11-07 04:49:42,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:42,035 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 320 transitions. [2019-11-07 04:49:42,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-11-07 04:49:42,036 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:42,037 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 04:49:42,037 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:42,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:42,037 INFO L82 PathProgramCache]: Analyzing trace with hash -741946462, now seen corresponding path program 1 times [2019-11-07 04:49:42,038 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:42,038 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881870658] [2019-11-07 04:49:42,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:42,106 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 04:49:42,107 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881870658] [2019-11-07 04:49:42,107 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:42,107 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:42,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880500870] [2019-11-07 04:49:42,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:42,109 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:42,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:42,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:42,109 INFO L87 Difference]: Start difference. First operand 205 states and 320 transitions. Second operand 5 states. [2019-11-07 04:49:42,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:42,384 INFO L93 Difference]: Finished difference Result 420 states and 661 transitions. [2019-11-07 04:49:42,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:42,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2019-11-07 04:49:42,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:42,390 INFO L225 Difference]: With dead ends: 420 [2019-11-07 04:49:42,390 INFO L226 Difference]: Without dead ends: 222 [2019-11-07 04:49:42,391 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 04:49:42,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2019-11-07 04:49:42,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2019-11-07 04:49:42,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2019-11-07 04:49:42,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 341 transitions. [2019-11-07 04:49:42,405 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 341 transitions. Word has length 72 [2019-11-07 04:49:42,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:42,405 INFO L462 AbstractCegarLoop]: Abstraction has 220 states and 341 transitions. [2019-11-07 04:49:42,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:42,406 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 341 transitions. [2019-11-07 04:49:42,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-07 04:49:42,407 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:42,407 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 04:49:42,407 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:42,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:42,408 INFO L82 PathProgramCache]: Analyzing trace with hash -345014114, now seen corresponding path program 1 times [2019-11-07 04:49:42,408 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:42,408 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915014615] [2019-11-07 04:49:42,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:42,495 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 04:49:42,496 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915014615] [2019-11-07 04:49:42,497 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:42,497 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:42,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502345088] [2019-11-07 04:49:42,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:42,499 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:42,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:42,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:42,500 INFO L87 Difference]: Start difference. First operand 220 states and 341 transitions. Second operand 5 states. [2019-11-07 04:49:42,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:42,674 INFO L93 Difference]: Finished difference Result 435 states and 677 transitions. [2019-11-07 04:49:42,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:42,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2019-11-07 04:49:42,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:42,676 INFO L225 Difference]: With dead ends: 435 [2019-11-07 04:49:42,676 INFO L226 Difference]: Without dead ends: 222 [2019-11-07 04:49:42,693 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 04:49:42,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2019-11-07 04:49:42,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2019-11-07 04:49:42,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2019-11-07 04:49:42,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 336 transitions. [2019-11-07 04:49:42,705 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 336 transitions. Word has length 73 [2019-11-07 04:49:42,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:42,706 INFO L462 AbstractCegarLoop]: Abstraction has 220 states and 336 transitions. [2019-11-07 04:49:42,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:42,706 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 336 transitions. [2019-11-07 04:49:42,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-07 04:49:42,707 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:42,708 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 04:49:42,708 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:42,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:42,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1745624304, now seen corresponding path program 1 times [2019-11-07 04:49:42,708 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:42,709 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552429983] [2019-11-07 04:49:42,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:42,757 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 04:49:42,758 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552429983] [2019-11-07 04:49:42,758 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:42,758 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:42,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686546756] [2019-11-07 04:49:42,759 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:42,759 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:42,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:42,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:42,760 INFO L87 Difference]: Start difference. First operand 220 states and 336 transitions. Second operand 5 states. [2019-11-07 04:49:42,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:42,927 INFO L93 Difference]: Finished difference Result 448 states and 689 transitions. [2019-11-07 04:49:42,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:42,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2019-11-07 04:49:42,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:42,930 INFO L225 Difference]: With dead ends: 448 [2019-11-07 04:49:42,930 INFO L226 Difference]: Without dead ends: 235 [2019-11-07 04:49:42,931 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 04:49:42,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-11-07 04:49:42,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2019-11-07 04:49:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-11-07 04:49:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 352 transitions. [2019-11-07 04:49:42,943 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 352 transitions. Word has length 83 [2019-11-07 04:49:42,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:42,944 INFO L462 AbstractCegarLoop]: Abstraction has 233 states and 352 transitions. [2019-11-07 04:49:42,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:42,944 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 352 transitions. [2019-11-07 04:49:42,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-11-07 04:49:42,945 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:42,945 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 04:49:42,945 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:42,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:42,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1572060468, now seen corresponding path program 1 times [2019-11-07 04:49:42,946 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:42,946 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047165657] [2019-11-07 04:49:42,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:42,988 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 04:49:42,988 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047165657] [2019-11-07 04:49:42,988 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:42,989 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:42,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055951089] [2019-11-07 04:49:42,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:42,989 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:42,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:42,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:42,990 INFO L87 Difference]: Start difference. First operand 233 states and 352 transitions. Second operand 5 states. [2019-11-07 04:49:43,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:43,155 INFO L93 Difference]: Finished difference Result 461 states and 699 transitions. [2019-11-07 04:49:43,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:43,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2019-11-07 04:49:43,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:43,157 INFO L225 Difference]: With dead ends: 461 [2019-11-07 04:49:43,157 INFO L226 Difference]: Without dead ends: 235 [2019-11-07 04:49:43,158 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 04:49:43,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-11-07 04:49:43,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2019-11-07 04:49:43,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-11-07 04:49:43,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 346 transitions. [2019-11-07 04:49:43,171 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 346 transitions. Word has length 84 [2019-11-07 04:49:43,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:43,171 INFO L462 AbstractCegarLoop]: Abstraction has 233 states and 346 transitions. [2019-11-07 04:49:43,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:43,171 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 346 transitions. [2019-11-07 04:49:43,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-07 04:49:43,172 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:43,173 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 04:49:43,173 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:43,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:43,173 INFO L82 PathProgramCache]: Analyzing trace with hash -595531095, now seen corresponding path program 1 times [2019-11-07 04:49:43,174 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:43,174 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772126008] [2019-11-07 04:49:43,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:43,293 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 04:49:43,293 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772126008] [2019-11-07 04:49:43,293 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746827597] [2019-11-07 04:49:43,294 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 04:49:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:43,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-07 04:49:43,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:49:43,472 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 04:49:43,473 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:49:43,522 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:49:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-11-07 04:49:43,587 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2039130627] [2019-11-07 04:49:43,656 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2019-11-07 04:49:43,656 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:49:43,663 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:49:43,670 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:49:43,671 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:49:43,720 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:49:43,724 INFO L197 IcfgInterpreter]: Interpreting procedure ssl3_connect with input of size 3 for LOIs [2019-11-07 04:49:43,939 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-11-07 04:49:44,416 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 196 [2019-11-07 04:49:44,531 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2019-11-07 04:49:45,793 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2019-11-07 04:49:47,343 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:49:47,344 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:49:48,185 WARN L191 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 149 [2019-11-07 04:49:48,967 WARN L191 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 144 [2019-11-07 04:49:49,686 WARN L191 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 147 [2019-11-07 04:49:50,466 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 150 [2019-11-07 04:49:51,304 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 158 [2019-11-07 04:49:52,269 WARN L191 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 166 [2019-11-07 04:49:53,303 WARN L191 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 168 [2019-11-07 04:49:54,103 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 151 [2019-11-07 04:49:54,891 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 153 [2019-11-07 04:49:55,706 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 149 [2019-11-07 04:49:56,758 WARN L191 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 146 [2019-11-07 04:49:57,577 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 152 [2019-11-07 04:49:58,644 WARN L191 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 149 [2019-11-07 04:49:59,451 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 152 [2019-11-07 04:50:00,278 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 147 [2019-11-07 04:50:01,146 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 154 [2019-11-07 04:50:02,319 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 155 [2019-11-07 04:50:03,281 WARN L191 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 158 [2019-11-07 04:50:04,158 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 147 [2019-11-07 04:50:05,072 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 149 [2019-11-07 04:50:05,922 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 155 [2019-11-07 04:50:07,177 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 161 [2019-11-07 04:50:08,154 WARN L191 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 164 [2019-11-07 04:50:09,075 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 147 [2019-11-07 04:50:09,991 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 152 [2019-11-07 04:50:10,924 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 153 [2019-11-07 04:50:12,180 WARN L191 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 167 [2019-11-07 04:50:13,181 WARN L191 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 170 [2019-11-07 04:50:14,142 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 147 [2019-11-07 04:50:15,080 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 148 [2019-11-07 04:50:15,083 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:50:15,083 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4, 33] total 41 [2019-11-07 04:50:15,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2978981] [2019-11-07 04:50:15,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-11-07 04:50:15,091 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:50:15,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-11-07 04:50:15,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1402, Unknown=0, NotChecked=0, Total=1640 [2019-11-07 04:50:15,093 INFO L87 Difference]: Start difference. First operand 233 states and 346 transitions. Second operand 41 states. [2019-11-07 04:50:15,836 WARN L191 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 144 [2019-11-07 04:50:16,599 WARN L191 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 147 [2019-11-07 04:50:17,336 WARN L191 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 150 [2019-11-07 04:50:18,095 WARN L191 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 149 [2019-11-07 04:50:18,860 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 158