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-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:30:34,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:30:34,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:30:35,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:30:35,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:30:35,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:30:35,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:30:35,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:30:35,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:30:35,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:30:35,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:30:35,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:30:35,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:30:35,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:30:35,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:30:35,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:30:35,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:30:35,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:30:35,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:30:35,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:30:35,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:30:35,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:30:35,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:30:35,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:30:35,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 03:30:35,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:30:35,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:30:35,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:30:35,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:30:35,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:30:35,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:30:35,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:30:35,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:30:35,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:30:35,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:30:35,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:30:35,078 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:30:35,094 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:30:35,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:30:35,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:30:35,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:30:35,095 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:30:35,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:30:35,096 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:30:35,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:30:35,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:30:35,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:30:35,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:30:35,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:30:35,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:30:35,097 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:30:35,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:30:35,098 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:30:35,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:30:35,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:30:35,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:30:35,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:30:35,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:30:35,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:30:35,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:30:35,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:30:35,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:30:35,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:30:35,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:30:35,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:30:35,100 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:30:35,396 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:30:35,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:30:35,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:30:35,424 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:30:35,424 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:30:35,425 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_3.cil-1.c [2019-10-15 03:30:35,506 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11954549c/3b69f6ab71454c8cb2804f01281d63c0/FLAG4fc1364e2 [2019-10-15 03:30:36,052 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:30:36,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_clnt_3.cil-1.c [2019-10-15 03:30:36,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11954549c/3b69f6ab71454c8cb2804f01281d63c0/FLAG4fc1364e2 [2019-10-15 03:30:36,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11954549c/3b69f6ab71454c8cb2804f01281d63c0 [2019-10-15 03:30:36,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:30:36,366 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:30:36,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:30:36,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:30:36,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:30:36,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:30:36" (1/1) ... [2019-10-15 03:30:36,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d3fd5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:36, skipping insertion in model container [2019-10-15 03:30:36,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:30:36" (1/1) ... [2019-10-15 03:30:36,382 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:30:36,435 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:30:36,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:30:36,694 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:30:36,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:30:36,856 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:30:36,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:36 WrapperNode [2019-10-15 03:30:36,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:30:36,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:30:36,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:30:36,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:30:36,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:36" (1/1) ... [2019-10-15 03:30:36,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:36" (1/1) ... [2019-10-15 03:30:36,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:36" (1/1) ... [2019-10-15 03:30:36,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:36" (1/1) ... [2019-10-15 03:30:36,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:36" (1/1) ... [2019-10-15 03:30:36,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:36" (1/1) ... [2019-10-15 03:30:36,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:36" (1/1) ... [2019-10-15 03:30:36,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:30:36,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:30:36,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:30:36,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:30:36,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:30:36,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:30:36,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:30:36,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2019-10-15 03:30:36,980 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:30:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:30:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:30:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2019-10-15 03:30:36,982 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:30:36,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:30:36,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:30:37,124 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-15 03:30:37,673 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2019-10-15 03:30:37,674 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2019-10-15 03:30:38,002 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:30:38,002 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:30:38,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:30:38 BoogieIcfgContainer [2019-10-15 03:30:38,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:30:38,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:30:38,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:30:38,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:30:38,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:30:36" (1/3) ... [2019-10-15 03:30:38,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da0beea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:30:38, skipping insertion in model container [2019-10-15 03:30:38,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:36" (2/3) ... [2019-10-15 03:30:38,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da0beea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:30:38, skipping insertion in model container [2019-10-15 03:30:38,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:30:38" (3/3) ... [2019-10-15 03:30:38,013 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.cil-1.c [2019-10-15 03:30:38,024 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:30:38,033 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:30:38,043 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:30:38,081 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:30:38,081 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:30:38,081 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:30:38,082 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:30:38,082 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:30:38,082 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:30:38,082 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:30:38,082 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:30:38,110 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2019-10-15 03:30:38,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-15 03:30:38,122 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:38,123 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:30:38,126 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:38,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:38,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1522704212, now seen corresponding path program 1 times [2019-10-15 03:30:38,143 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:38,143 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300767847] [2019-10-15 03:30:38,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:38,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:38,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:38,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:30:38,384 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300767847] [2019-10-15 03:30:38,385 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:30:38,385 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:30:38,386 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11499707] [2019-10-15 03:30:38,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:30:38,391 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:30:38,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:30:38,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:30:38,409 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2019-10-15 03:30:38,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:30:38,492 INFO L93 Difference]: Finished difference Result 183 states and 304 transitions. [2019-10-15 03:30:38,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:30:38,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-15 03:30:38,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:30:38,513 INFO L225 Difference]: With dead ends: 183 [2019-10-15 03:30:38,513 INFO L226 Difference]: Without dead ends: 164 [2019-10-15 03:30:38,518 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:30:38,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-10-15 03:30:38,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2019-10-15 03:30:38,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2019-10-15 03:30:38,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 237 transitions. [2019-10-15 03:30:38,607 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 237 transitions. Word has length 25 [2019-10-15 03:30:38,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:30:38,607 INFO L462 AbstractCegarLoop]: Abstraction has 163 states and 237 transitions. [2019-10-15 03:30:38,607 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:30:38,608 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 237 transitions. [2019-10-15 03:30:38,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-15 03:30:38,609 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:38,609 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:30:38,610 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:38,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:38,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1740798676, now seen corresponding path program 1 times [2019-10-15 03:30:38,610 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:38,611 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643562588] [2019-10-15 03:30:38,611 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:38,611 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:38,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:38,680 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:30:38,681 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643562588] [2019-10-15 03:30:38,681 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:30:38,682 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:30:38,682 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399475242] [2019-10-15 03:30:38,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:30:38,685 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:30:38,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:30:38,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:30:38,686 INFO L87 Difference]: Start difference. First operand 163 states and 237 transitions. Second operand 3 states. [2019-10-15 03:30:38,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:30:38,911 INFO L93 Difference]: Finished difference Result 262 states and 384 transitions. [2019-10-15 03:30:38,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:30:38,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-10-15 03:30:38,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:30:38,918 INFO L225 Difference]: With dead ends: 262 [2019-10-15 03:30:38,919 INFO L226 Difference]: Without dead ends: 182 [2019-10-15 03:30:38,923 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:30:38,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2019-10-15 03:30:38,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 178. [2019-10-15 03:30:38,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2019-10-15 03:30:38,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 255 transitions. [2019-10-15 03:30:38,961 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 255 transitions. Word has length 36 [2019-10-15 03:30:38,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:30:38,965 INFO L462 AbstractCegarLoop]: Abstraction has 178 states and 255 transitions. [2019-10-15 03:30:38,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:30:38,966 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 255 transitions. [2019-10-15 03:30:38,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-15 03:30:38,968 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:38,970 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1] [2019-10-15 03:30:38,971 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:38,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:38,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1204839858, now seen corresponding path program 1 times [2019-10-15 03:30:38,971 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:38,972 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035218314] [2019-10-15 03:30:38,972 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:38,972 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:38,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:39,147 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:30:39,147 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035218314] [2019-10-15 03:30:39,148 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520728961] [2019-10-15 03:30:39,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:30:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:39,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:30:39,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:30:39,325 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 03:30:39,326 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:30:39,372 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 03:30:39,372 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:30:39,373 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 9 [2019-10-15 03:30:39,373 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012204176] [2019-10-15 03:30:39,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:30:39,374 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:30:39,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:30:39,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:30:39,375 INFO L87 Difference]: Start difference. First operand 178 states and 255 transitions. Second operand 6 states. [2019-10-15 03:30:39,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:30:39,835 INFO L93 Difference]: Finished difference Result 533 states and 825 transitions. [2019-10-15 03:30:39,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:30:39,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2019-10-15 03:30:39,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:30:39,843 INFO L225 Difference]: With dead ends: 533 [2019-10-15 03:30:39,843 INFO L226 Difference]: Without dead ends: 360 [2019-10-15 03:30:39,845 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:30:39,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2019-10-15 03:30:39,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 328. [2019-10-15 03:30:39,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2019-10-15 03:30:39,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 457 transitions. [2019-10-15 03:30:39,899 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 457 transitions. Word has length 49 [2019-10-15 03:30:39,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:30:39,900 INFO L462 AbstractCegarLoop]: Abstraction has 328 states and 457 transitions. [2019-10-15 03:30:39,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:30:39,900 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 457 transitions. [2019-10-15 03:30:39,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-10-15 03:30:39,905 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:39,906 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:30:40,112 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:30:40,113 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:40,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:40,113 INFO L82 PathProgramCache]: Analyzing trace with hash 156741548, now seen corresponding path program 1 times [2019-10-15 03:30:40,114 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:40,114 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688840188] [2019-10-15 03:30:40,114 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:40,114 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:40,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 03:30:40,196 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688840188] [2019-10-15 03:30:40,197 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:30:40,197 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:30:40,197 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948717647] [2019-10-15 03:30:40,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:30:40,198 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:30:40,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:30:40,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:30:40,199 INFO L87 Difference]: Start difference. First operand 328 states and 457 transitions. Second operand 3 states. [2019-10-15 03:30:40,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:30:40,352 INFO L93 Difference]: Finished difference Result 691 states and 979 transitions. [2019-10-15 03:30:40,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:30:40,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2019-10-15 03:30:40,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:30:40,355 INFO L225 Difference]: With dead ends: 691 [2019-10-15 03:30:40,356 INFO L226 Difference]: Without dead ends: 370 [2019-10-15 03:30:40,358 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:30:40,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2019-10-15 03:30:40,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 366. [2019-10-15 03:30:40,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2019-10-15 03:30:40,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 501 transitions. [2019-10-15 03:30:40,376 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 501 transitions. Word has length 64 [2019-10-15 03:30:40,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:30:40,377 INFO L462 AbstractCegarLoop]: Abstraction has 366 states and 501 transitions. [2019-10-15 03:30:40,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:30:40,377 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 501 transitions. [2019-10-15 03:30:40,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-15 03:30:40,380 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:40,380 INFO L380 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] [2019-10-15 03:30:40,381 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:40,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:40,384 INFO L82 PathProgramCache]: Analyzing trace with hash -897873071, now seen corresponding path program 1 times [2019-10-15 03:30:40,385 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:40,385 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560673212] [2019-10-15 03:30:40,385 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:40,385 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:40,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:40,524 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:30:40,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560673212] [2019-10-15 03:30:40,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670924737] [2019-10-15 03:30:40,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:30:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:40,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 03:30:40,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:30:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-10-15 03:30:40,641 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:30:40,683 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-10-15 03:30:40,684 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:30:40,684 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 12 [2019-10-15 03:30:40,684 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594586611] [2019-10-15 03:30:40,685 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:30:40,685 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:30:40,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:30:40,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:30:40,686 INFO L87 Difference]: Start difference. First operand 366 states and 501 transitions. Second operand 8 states. [2019-10-15 03:30:41,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:30:41,162 INFO L93 Difference]: Finished difference Result 852 states and 1223 transitions. [2019-10-15 03:30:41,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:30:41,167 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2019-10-15 03:30:41,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:30:41,170 INFO L225 Difference]: With dead ends: 852 [2019-10-15 03:30:41,170 INFO L226 Difference]: Without dead ends: 463 [2019-10-15 03:30:41,171 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:30:41,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2019-10-15 03:30:41,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 413. [2019-10-15 03:30:41,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2019-10-15 03:30:41,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 578 transitions. [2019-10-15 03:30:41,188 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 578 transitions. Word has length 82 [2019-10-15 03:30:41,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:30:41,189 INFO L462 AbstractCegarLoop]: Abstraction has 413 states and 578 transitions. [2019-10-15 03:30:41,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:30:41,189 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 578 transitions. [2019-10-15 03:30:41,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-15 03:30:41,191 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:41,191 INFO L380 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] [2019-10-15 03:30:41,403 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:30:41,404 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:41,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:41,405 INFO L82 PathProgramCache]: Analyzing trace with hash -955926321, now seen corresponding path program 1 times [2019-10-15 03:30:41,405 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:41,406 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752236996] [2019-10-15 03:30:41,406 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:41,407 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:41,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 03:30:41,546 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752236996] [2019-10-15 03:30:41,546 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070248187] [2019-10-15 03:30:41,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:30:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:41,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 03:30:41,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:30:41,652 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-15 03:30:41,653 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:30:41,705 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:30:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-10-15 03:30:41,735 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [816741787] [2019-10-15 03:30:41,776 INFO L162 IcfgInterpreter]: Started Sifa with 42 locations of interest [2019-10-15 03:30:41,776 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:30:41,782 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:30:41,791 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:30:41,791 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:30:41,845 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:30:41,859 INFO L199 IcfgInterpreter]: Interpreting procedure ssl3_connect with input of size 3 for LOIs