/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:49:13,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:49:13,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:49:13,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:49:13,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:49:13,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:49:13,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:49:13,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:49:13,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:49:13,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:49:13,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:49:13,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:49:13,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:49:13,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:49:13,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:49:13,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:49:13,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:49:13,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:49:13,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:49:13,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:49:13,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:49:13,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:49:13,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:49:13,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:49:13,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:49:13,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:49:13,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:49:13,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:49:13,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:49:13,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:49:13,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:49:13,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:49:13,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:49:13,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:49:13,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:49:13,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:49:13,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:49:13,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:49:13,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:49:13,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:49:13,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:49:13,154 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 04:49:13,178 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:49:13,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:49:13,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:49:13,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:49:13,182 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:49:13,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:49:13,183 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:49:13,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:49:13,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:49:13,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:49:13,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:49:13,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:49:13,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:49:13,186 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:49:13,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:49:13,186 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:49:13,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:49:13,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:49:13,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:49:13,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:49:13,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:49:13,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:49:13,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:49:13,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:49:13,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:49:13,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:49:13,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:49:13,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:49:13,189 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 04:49:13,520 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:49:13,538 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:49:13,541 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:49:13,543 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:49:13,543 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:49:13,544 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_2.cil-2.c [2019-11-07 04:49:13,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29be4fbc1/04a4d680a96b4d249afe7493f0440844/FLAG22bd6ac82 [2019-11-07 04:49:14,121 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:49:14,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_clnt_2.cil-2.c [2019-11-07 04:49:14,146 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29be4fbc1/04a4d680a96b4d249afe7493f0440844/FLAG22bd6ac82 [2019-11-07 04:49:14,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29be4fbc1/04a4d680a96b4d249afe7493f0440844 [2019-11-07 04:49:14,495 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:49:14,497 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:49:14,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:49:14,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:49:14,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:49:14,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:49:14" (1/1) ... [2019-11-07 04:49:14,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db90fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:14, skipping insertion in model container [2019-11-07 04:49:14,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:49:14" (1/1) ... [2019-11-07 04:49:14,526 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:49:14,634 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:49:14,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:49:14,964 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:49:15,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:49:15,121 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:49:15,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:15 WrapperNode [2019-11-07 04:49:15,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:49:15,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:49:15,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:49:15,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:49:15,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:15" (1/1) ... [2019-11-07 04:49:15,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:15" (1/1) ... [2019-11-07 04:49:15,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:15" (1/1) ... [2019-11-07 04:49:15,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:15" (1/1) ... [2019-11-07 04:49:15,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:15" (1/1) ... [2019-11-07 04:49:15,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:15" (1/1) ... [2019-11-07 04:49:15,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:15" (1/1) ... [2019-11-07 04:49:15,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:49:15,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:49:15,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:49:15,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:49:15,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:15" (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 04:49:15,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:49:15,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:49:15,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2019-11-07 04:49:15,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:49:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:49:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-07 04:49:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:49:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-11-07 04:49:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 04:49:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2019-11-07 04:49:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:49:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:49:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:49:15,441 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-07 04:49:15,932 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2019-11-07 04:49:15,933 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2019-11-07 04:49:16,364 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:49:16,365 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 04:49:16,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:49:16 BoogieIcfgContainer [2019-11-07 04:49:16,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:49:16,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:49:16,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:49:16,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:49:16,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:49:14" (1/3) ... [2019-11-07 04:49:16,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af56cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:49:16, skipping insertion in model container [2019-11-07 04:49:16,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:15" (2/3) ... [2019-11-07 04:49:16,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af56cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:49:16, skipping insertion in model container [2019-11-07 04:49:16,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:49:16" (3/3) ... [2019-11-07 04:49:16,375 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.cil-2.c [2019-11-07 04:49:16,383 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:49:16,390 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:49:16,401 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:49:16,427 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:49:16,428 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:49:16,428 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:49:16,428 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:49:16,429 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:49:16,429 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:49:16,429 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:49:16,429 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:49:16,448 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-11-07 04:49:16,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-07 04:49:16,455 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:16,455 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 04:49:16,457 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:16,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:16,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1309660893, now seen corresponding path program 1 times [2019-11-07 04:49:16,471 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:16,471 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055165440] [2019-11-07 04:49:16,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:16,781 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 04:49:16,782 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055165440] [2019-11-07 04:49:16,783 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:16,784 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:16,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394776457] [2019-11-07 04:49:16,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:16,792 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:16,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:16,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:16,810 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 5 states. [2019-11-07 04:49:17,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:17,198 INFO L93 Difference]: Finished difference Result 212 states and 355 transitions. [2019-11-07 04:49:17,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:17,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-11-07 04:49:17,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:17,214 INFO L225 Difference]: With dead ends: 212 [2019-11-07 04:49:17,214 INFO L226 Difference]: Without dead ends: 114 [2019-11-07 04:49:17,218 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 04:49:17,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-11-07 04:49:17,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2019-11-07 04:49:17,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-11-07 04:49:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 162 transitions. [2019-11-07 04:49:17,282 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 162 transitions. Word has length 25 [2019-11-07 04:49:17,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:17,283 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 162 transitions. [2019-11-07 04:49:17,284 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:17,284 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 162 transitions. [2019-11-07 04:49:17,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-07 04:49:17,287 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:17,288 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 04:49:17,288 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:17,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:17,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1949467789, now seen corresponding path program 1 times [2019-11-07 04:49:17,291 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:17,291 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457275191] [2019-11-07 04:49:17,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:17,412 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 04:49:17,412 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457275191] [2019-11-07 04:49:17,412 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:17,413 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:17,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618328853] [2019-11-07 04:49:17,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:17,415 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:17,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:17,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:17,416 INFO L87 Difference]: Start difference. First operand 109 states and 162 transitions. Second operand 5 states. [2019-11-07 04:49:17,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:17,686 INFO L93 Difference]: Finished difference Result 238 states and 362 transitions. [2019-11-07 04:49:17,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:17,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-11-07 04:49:17,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:17,691 INFO L225 Difference]: With dead ends: 238 [2019-11-07 04:49:17,694 INFO L226 Difference]: Without dead ends: 136 [2019-11-07 04:49:17,695 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 04:49:17,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-11-07 04:49:17,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 131. [2019-11-07 04:49:17,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-11-07 04:49:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 201 transitions. [2019-11-07 04:49:17,732 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 201 transitions. Word has length 26 [2019-11-07 04:49:17,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:17,733 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 201 transitions. [2019-11-07 04:49:17,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:17,733 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 201 transitions. [2019-11-07 04:49:17,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-07 04:49:17,737 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:17,737 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 04:49:17,738 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:17,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:17,738 INFO L82 PathProgramCache]: Analyzing trace with hash 825791782, now seen corresponding path program 1 times [2019-11-07 04:49:17,739 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:17,739 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116830733] [2019-11-07 04:49:17,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:17,852 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 04:49:17,853 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116830733] [2019-11-07 04:49:17,853 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:17,853 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:17,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578572359] [2019-11-07 04:49:17,855 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:17,856 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:17,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:17,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:17,860 INFO L87 Difference]: Start difference. First operand 131 states and 201 transitions. Second operand 5 states. [2019-11-07 04:49:18,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:18,108 INFO L93 Difference]: Finished difference Result 276 states and 431 transitions. [2019-11-07 04:49:18,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:18,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-11-07 04:49:18,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:18,111 INFO L225 Difference]: With dead ends: 276 [2019-11-07 04:49:18,112 INFO L226 Difference]: Without dead ends: 152 [2019-11-07 04:49:18,116 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 04:49:18,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-07 04:49:18,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2019-11-07 04:49:18,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-07 04:49:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 233 transitions. [2019-11-07 04:49:18,146 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 233 transitions. Word has length 43 [2019-11-07 04:49:18,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:18,147 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 233 transitions. [2019-11-07 04:49:18,147 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:18,147 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 233 transitions. [2019-11-07 04:49:18,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-07 04:49:18,149 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:18,150 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 04:49:18,150 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:18,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:18,150 INFO L82 PathProgramCache]: Analyzing trace with hash -221294570, now seen corresponding path program 1 times [2019-11-07 04:49:18,151 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:18,151 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11707774] [2019-11-07 04:49:18,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:18,243 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 04:49:18,244 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11707774] [2019-11-07 04:49:18,245 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:18,245 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:18,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053042893] [2019-11-07 04:49:18,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:18,246 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:18,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:18,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:18,247 INFO L87 Difference]: Start difference. First operand 150 states and 233 transitions. Second operand 5 states. [2019-11-07 04:49:18,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:18,438 INFO L93 Difference]: Finished difference Result 295 states and 461 transitions. [2019-11-07 04:49:18,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:18,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2019-11-07 04:49:18,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:18,440 INFO L225 Difference]: With dead ends: 295 [2019-11-07 04:49:18,441 INFO L226 Difference]: Without dead ends: 152 [2019-11-07 04:49:18,443 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 04:49:18,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-07 04:49:18,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2019-11-07 04:49:18,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-07 04:49:18,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 231 transitions. [2019-11-07 04:49:18,461 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 231 transitions. Word has length 44 [2019-11-07 04:49:18,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:18,462 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 231 transitions. [2019-11-07 04:49:18,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:18,462 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 231 transitions. [2019-11-07 04:49:18,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-07 04:49:18,464 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:18,465 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 04:49:18,465 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:18,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:18,465 INFO L82 PathProgramCache]: Analyzing trace with hash 993114812, now seen corresponding path program 1 times [2019-11-07 04:49:18,466 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:18,466 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168081621] [2019-11-07 04:49:18,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:18,541 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 04:49:18,541 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168081621] [2019-11-07 04:49:18,542 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:18,542 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:18,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684610819] [2019-11-07 04:49:18,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:18,543 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:18,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:18,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:18,545 INFO L87 Difference]: Start difference. First operand 150 states and 231 transitions. Second operand 5 states. [2019-11-07 04:49:18,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:18,728 INFO L93 Difference]: Finished difference Result 314 states and 490 transitions. [2019-11-07 04:49:18,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:18,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2019-11-07 04:49:18,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:18,730 INFO L225 Difference]: With dead ends: 314 [2019-11-07 04:49:18,731 INFO L226 Difference]: Without dead ends: 171 [2019-11-07 04:49:18,732 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 04:49:18,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-11-07 04:49:18,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2019-11-07 04:49:18,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2019-11-07 04:49:18,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 258 transitions. [2019-11-07 04:49:18,745 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 258 transitions. Word has length 59 [2019-11-07 04:49:18,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:18,747 INFO L462 AbstractCegarLoop]: Abstraction has 167 states and 258 transitions. [2019-11-07 04:49:18,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:18,747 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 258 transitions. [2019-11-07 04:49:18,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-07 04:49:18,750 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:18,752 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 04:49:18,752 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:18,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:18,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1466037684, now seen corresponding path program 1 times [2019-11-07 04:49:18,753 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:18,753 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704435135] [2019-11-07 04:49:18,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:18,859 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 04:49:18,859 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704435135] [2019-11-07 04:49:18,860 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:18,860 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:18,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764484883] [2019-11-07 04:49:18,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:18,862 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:18,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:18,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:18,863 INFO L87 Difference]: Start difference. First operand 167 states and 258 transitions. Second operand 5 states. [2019-11-07 04:49:19,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:19,079 INFO L93 Difference]: Finished difference Result 331 states and 514 transitions. [2019-11-07 04:49:19,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:19,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-11-07 04:49:19,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:19,081 INFO L225 Difference]: With dead ends: 331 [2019-11-07 04:49:19,081 INFO L226 Difference]: Without dead ends: 171 [2019-11-07 04:49:19,082 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 04:49:19,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-11-07 04:49:19,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2019-11-07 04:49:19,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2019-11-07 04:49:19,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 255 transitions. [2019-11-07 04:49:19,092 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 255 transitions. Word has length 60 [2019-11-07 04:49:19,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:19,092 INFO L462 AbstractCegarLoop]: Abstraction has 167 states and 255 transitions. [2019-11-07 04:49:19,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:19,092 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 255 transitions. [2019-11-07 04:49:19,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-07 04:49:19,094 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:19,094 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 04:49:19,094 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:19,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:19,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1631946930, now seen corresponding path program 1 times [2019-11-07 04:49:19,095 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:19,095 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614353709] [2019-11-07 04:49:19,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:19,152 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 04:49:19,153 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614353709] [2019-11-07 04:49:19,153 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:19,153 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:19,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125659815] [2019-11-07 04:49:19,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:19,154 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:19,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:19,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:19,155 INFO L87 Difference]: Start difference. First operand 167 states and 255 transitions. Second operand 5 states. [2019-11-07 04:49:19,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:19,361 INFO L93 Difference]: Finished difference Result 366 states and 570 transitions. [2019-11-07 04:49:19,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:19,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2019-11-07 04:49:19,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:19,363 INFO L225 Difference]: With dead ends: 366 [2019-11-07 04:49:19,363 INFO L226 Difference]: Without dead ends: 205 [2019-11-07 04:49:19,365 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 04:49:19,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2019-11-07 04:49:19,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2019-11-07 04:49:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2019-11-07 04:49:19,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 320 transitions. [2019-11-07 04:49:19,377 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 320 transitions. Word has length 62 [2019-11-07 04:49:19,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:19,378 INFO L462 AbstractCegarLoop]: Abstraction has 205 states and 320 transitions. [2019-11-07 04:49:19,378 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:19,378 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 320 transitions. [2019-11-07 04:49:19,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-11-07 04:49:19,381 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:19,381 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 04:49:19,382 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:19,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:19,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1138165896, now seen corresponding path program 1 times [2019-11-07 04:49:19,383 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:19,383 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530726081] [2019-11-07 04:49:19,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:19,470 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 04:49:19,471 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530726081] [2019-11-07 04:49:19,471 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:19,471 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:19,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336723724] [2019-11-07 04:49:19,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:19,472 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:19,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:19,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:19,473 INFO L87 Difference]: Start difference. First operand 205 states and 320 transitions. Second operand 5 states. [2019-11-07 04:49:19,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:19,645 INFO L93 Difference]: Finished difference Result 420 states and 661 transitions. [2019-11-07 04:49:19,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:19,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2019-11-07 04:49:19,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:19,647 INFO L225 Difference]: With dead ends: 420 [2019-11-07 04:49:19,647 INFO L226 Difference]: Without dead ends: 222 [2019-11-07 04:49:19,648 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 04:49:19,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2019-11-07 04:49:19,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2019-11-07 04:49:19,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2019-11-07 04:49:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 341 transitions. [2019-11-07 04:49:19,661 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 341 transitions. Word has length 72 [2019-11-07 04:49:19,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:19,663 INFO L462 AbstractCegarLoop]: Abstraction has 220 states and 341 transitions. [2019-11-07 04:49:19,664 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:19,665 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 341 transitions. [2019-11-07 04:49:19,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-07 04:49:19,666 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:19,666 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 04:49:19,667 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:19,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:19,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1355859368, now seen corresponding path program 1 times [2019-11-07 04:49:19,667 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:19,667 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223376321] [2019-11-07 04:49:19,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:19,734 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 04:49:19,734 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223376321] [2019-11-07 04:49:19,735 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:19,736 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:19,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005946607] [2019-11-07 04:49:19,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:19,736 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:19,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:19,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:19,738 INFO L87 Difference]: Start difference. First operand 220 states and 341 transitions. Second operand 5 states. [2019-11-07 04:49:19,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:19,928 INFO L93 Difference]: Finished difference Result 435 states and 677 transitions. [2019-11-07 04:49:19,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:19,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2019-11-07 04:49:19,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:19,931 INFO L225 Difference]: With dead ends: 435 [2019-11-07 04:49:19,931 INFO L226 Difference]: Without dead ends: 222 [2019-11-07 04:49:19,932 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 04:49:19,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2019-11-07 04:49:19,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2019-11-07 04:49:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2019-11-07 04:49:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 336 transitions. [2019-11-07 04:49:19,945 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 336 transitions. Word has length 73 [2019-11-07 04:49:19,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:19,946 INFO L462 AbstractCegarLoop]: Abstraction has 220 states and 336 transitions. [2019-11-07 04:49:19,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:19,946 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 336 transitions. [2019-11-07 04:49:19,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-07 04:49:19,947 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:19,947 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 04:49:19,947 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:19,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:19,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1532506952, now seen corresponding path program 1 times [2019-11-07 04:49:19,948 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:19,948 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849599802] [2019-11-07 04:49:19,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:20,038 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 04:49:20,038 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849599802] [2019-11-07 04:49:20,039 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:20,039 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:20,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693835910] [2019-11-07 04:49:20,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:20,041 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:20,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:20,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:20,041 INFO L87 Difference]: Start difference. First operand 220 states and 336 transitions. Second operand 5 states. [2019-11-07 04:49:20,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:20,287 INFO L93 Difference]: Finished difference Result 448 states and 689 transitions. [2019-11-07 04:49:20,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:20,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2019-11-07 04:49:20,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:20,289 INFO L225 Difference]: With dead ends: 448 [2019-11-07 04:49:20,289 INFO L226 Difference]: Without dead ends: 235 [2019-11-07 04:49:20,290 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 04:49:20,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-11-07 04:49:20,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2019-11-07 04:49:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-11-07 04:49:20,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 352 transitions. [2019-11-07 04:49:20,302 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 352 transitions. Word has length 83 [2019-11-07 04:49:20,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:20,302 INFO L462 AbstractCegarLoop]: Abstraction has 233 states and 352 transitions. [2019-11-07 04:49:20,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:20,303 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 352 transitions. [2019-11-07 04:49:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-11-07 04:49:20,305 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:20,305 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 04:49:20,305 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:20,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:20,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1366319736, now seen corresponding path program 1 times [2019-11-07 04:49:20,306 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:20,306 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845932561] [2019-11-07 04:49:20,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:20,350 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 04:49:20,351 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845932561] [2019-11-07 04:49:20,351 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:49:20,351 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:49:20,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416488298] [2019-11-07 04:49:20,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:49:20,352 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:49:20,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:49:20,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:49:20,353 INFO L87 Difference]: Start difference. First operand 233 states and 352 transitions. Second operand 5 states. [2019-11-07 04:49:20,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:49:20,561 INFO L93 Difference]: Finished difference Result 461 states and 699 transitions. [2019-11-07 04:49:20,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:49:20,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2019-11-07 04:49:20,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:49:20,564 INFO L225 Difference]: With dead ends: 461 [2019-11-07 04:49:20,564 INFO L226 Difference]: Without dead ends: 235 [2019-11-07 04:49:20,565 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 04:49:20,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-11-07 04:49:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2019-11-07 04:49:20,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-11-07 04:49:20,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 346 transitions. [2019-11-07 04:49:20,580 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 346 transitions. Word has length 84 [2019-11-07 04:49:20,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:49:20,580 INFO L462 AbstractCegarLoop]: Abstraction has 233 states and 346 transitions. [2019-11-07 04:49:20,580 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:49:20,580 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 346 transitions. [2019-11-07 04:49:20,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-07 04:49:20,581 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:49:20,582 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 04:49:20,582 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:49:20,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:49:20,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1678986295, now seen corresponding path program 1 times [2019-11-07 04:49:20,583 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:49:20,583 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334598054] [2019-11-07 04:49:20,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:49:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:20,699 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 04:49:20,699 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334598054] [2019-11-07 04:49:20,699 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069446471] [2019-11-07 04:49:20,700 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 04:49:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:49:20,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-07 04:49:20,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:49:20,885 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 04:49:20,885 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:49:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-11-07 04:49:21,012 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [829629584] [2019-11-07 04:49:21,048 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2019-11-07 04:49:21,048 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:49:21,056 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:49:21,066 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:49:21,067 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:49:21,136 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:49:21,150 INFO L197 IcfgInterpreter]: Interpreting procedure ssl3_connect with input of size 3 for LOIs [2019-11-07 04:49:22,525 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2019-11-07 04:49:23,097 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2019-11-07 04:49:23,650 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 201 [2019-11-07 04:49:24,051 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2019-11-07 04:49:24,349 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2019-11-07 04:49:26,888 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2019-11-07 04:49:28,029 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 209 [2019-11-07 04:49:28,711 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2019-11-07 04:49:30,548 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:49:30,549 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:49:31,435 WARN L191 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 160 [2019-11-07 04:49:32,169 WARN L191 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 141 [2019-11-07 04:49:32,881 WARN L191 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 143 [2019-11-07 04:49:33,637 WARN L191 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 146 [2019-11-07 04:49:34,420 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 152 [2019-11-07 04:49:35,215 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 153 [2019-11-07 04:49:36,028 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 150 [2019-11-07 04:49:36,864 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 152 [2019-11-07 04:49:37,617 WARN L191 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 146 [2019-11-07 04:49:38,555 WARN L191 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 158 [2019-11-07 04:49:39,345 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2019-11-07 04:49:40,164 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 148 [2019-11-07 04:49:41,053 WARN L191 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 151 [2019-11-07 04:49:41,969 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 143 [2019-11-07 04:49:42,866 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 152 [2019-11-07 04:49:43,923 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 153 [2019-11-07 04:49:44,763 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 156 [2019-11-07 04:49:45,593 WARN L191 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 144 [2019-11-07 04:49:46,379 WARN L191 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 148 [2019-11-07 04:49:47,480 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 157 [2019-11-07 04:49:48,403 WARN L191 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 160 [2019-11-07 04:49:49,343 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 158 [2019-11-07 04:49:50,751 WARN L191 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 219 DAG size of output: 159 [2019-11-07 04:49:51,693 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 163 [2019-11-07 04:49:52,817 WARN L191 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 161