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_srvr_4.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:31:17,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:31:17,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:31:17,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:31:17,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:31:17,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:31:17,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:31:17,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:31:17,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:31:17,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:31:17,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:31:17,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:31:17,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:31:17,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:31:17,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:31:17,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:31:17,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:31:17,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:31:17,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:31:17,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:31:17,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:31:17,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:31:17,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:31:17,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:31:17,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 03:31:17,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:31:17,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:31:17,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:31:17,116 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 03:31:17,144 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:31:17,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:31:17,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:31:17,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:31:17,146 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:31:17,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:31:17,146 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:31:17,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:31:17,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:31:17,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:31:17,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:31:17,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:31:17,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:31:17,148 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:31:17,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:31:17,148 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:31:17,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:31:17,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:31:17,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:31:17,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:31:17,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:31:17,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:31:17,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:31:17,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:31:17,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:31:17,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:31:17,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:31:17,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:31:17,151 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 03:31:17,447 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:31:17,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:31:17,470 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:31:17,471 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:31:17,471 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:31:17,472 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_4.cil.c [2019-10-15 03:31:17,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fc2dc974/3a8ec0cb4196414584f6bc3957b473cd/FLAGe0765cb81 [2019-10-15 03:31:17,981 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:31:17,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_4.cil.c [2019-10-15 03:31:18,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fc2dc974/3a8ec0cb4196414584f6bc3957b473cd/FLAGe0765cb81 [2019-10-15 03:31:18,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fc2dc974/3a8ec0cb4196414584f6bc3957b473cd [2019-10-15 03:31:18,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:31:18,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:31:18,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:31:18,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:31:18,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:31:18,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:31:18" (1/1) ... [2019-10-15 03:31:18,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6faa1d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:18, skipping insertion in model container [2019-10-15 03:31:18,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:31:18" (1/1) ... [2019-10-15 03:31:18,362 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:31:18,422 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:31:18,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:31:18,741 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:31:18,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:31:18,944 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:31:18,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:18 WrapperNode [2019-10-15 03:31:18,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:31:18,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:31:18,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:31:18,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:31:18,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:18" (1/1) ... [2019-10-15 03:31:18,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:18" (1/1) ... [2019-10-15 03:31:18,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:18" (1/1) ... [2019-10-15 03:31:18,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:18" (1/1) ... [2019-10-15 03:31:18,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:18" (1/1) ... [2019-10-15 03:31:19,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:18" (1/1) ... [2019-10-15 03:31:19,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:18" (1/1) ... [2019-10-15 03:31:19,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:31:19,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:31:19,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:31:19,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:31:19,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:18" (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 03:31:19,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:31:19,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:31:19,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2019-10-15 03:31:19,083 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:31:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:31:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-15 03:31:19,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:31:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-15 03:31:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 03:31:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2019-10-15 03:31:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:31:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:31:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:31:19,305 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-15 03:31:19,856 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2019-10-15 03:31:19,856 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2019-10-15 03:31:20,131 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:31:20,131 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:31:20,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:31:20 BoogieIcfgContainer [2019-10-15 03:31:20,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:31:20,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:31:20,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:31:20,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:31:20,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:31:18" (1/3) ... [2019-10-15 03:31:20,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1ed1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:31:20, skipping insertion in model container [2019-10-15 03:31:20,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:18" (2/3) ... [2019-10-15 03:31:20,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1ed1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:31:20, skipping insertion in model container [2019-10-15 03:31:20,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:31:20" (3/3) ... [2019-10-15 03:31:20,143 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_4.cil.c [2019-10-15 03:31:20,154 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:31:20,166 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:31:20,180 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:31:20,218 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:31:20,218 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:31:20,219 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:31:20,219 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:31:20,219 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:31:20,219 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:31:20,220 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:31:20,220 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:31:20,250 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2019-10-15 03:31:20,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-15 03:31:20,279 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:20,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:20,282 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:20,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:20,290 INFO L82 PathProgramCache]: Analyzing trace with hash -239263324, now seen corresponding path program 1 times [2019-10-15 03:31:20,299 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:20,300 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964875505] [2019-10-15 03:31:20,300 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:20,301 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:20,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:20,585 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 03:31:20,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964875505] [2019-10-15 03:31:20,587 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:20,588 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:20,588 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462237275] [2019-10-15 03:31:20,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:20,595 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:20,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:20,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:20,613 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 5 states. [2019-10-15 03:31:21,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:21,058 INFO L93 Difference]: Finished difference Result 272 states and 467 transitions. [2019-10-15 03:31:21,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:21,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2019-10-15 03:31:21,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:21,079 INFO L225 Difference]: With dead ends: 272 [2019-10-15 03:31:21,079 INFO L226 Difference]: Without dead ends: 154 [2019-10-15 03:31:21,086 INFO L600 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 [2019-10-15 03:31:21,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-10-15 03:31:21,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 149. [2019-10-15 03:31:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-10-15 03:31:21,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 236 transitions. [2019-10-15 03:31:21,172 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 236 transitions. Word has length 45 [2019-10-15 03:31:21,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:21,172 INFO L462 AbstractCegarLoop]: Abstraction has 149 states and 236 transitions. [2019-10-15 03:31:21,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:21,173 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 236 transitions. [2019-10-15 03:31:21,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 03:31:21,175 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:21,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:21,176 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:21,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:21,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1165646675, now seen corresponding path program 1 times [2019-10-15 03:31:21,176 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:21,177 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914728210] [2019-10-15 03:31:21,177 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:21,177 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:21,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:21,367 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 03:31:21,368 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914728210] [2019-10-15 03:31:21,368 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:21,369 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:21,369 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622852217] [2019-10-15 03:31:21,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:21,372 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:21,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:21,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:21,373 INFO L87 Difference]: Start difference. First operand 149 states and 236 transitions. Second operand 5 states. [2019-10-15 03:31:21,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:21,702 INFO L93 Difference]: Finished difference Result 336 states and 546 transitions. [2019-10-15 03:31:21,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:21,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2019-10-15 03:31:21,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:21,706 INFO L225 Difference]: With dead ends: 336 [2019-10-15 03:31:21,707 INFO L226 Difference]: Without dead ends: 193 [2019-10-15 03:31:21,708 INFO L600 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 [2019-10-15 03:31:21,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-10-15 03:31:21,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 188. [2019-10-15 03:31:21,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-10-15 03:31:21,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 309 transitions. [2019-10-15 03:31:21,728 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 309 transitions. Word has length 46 [2019-10-15 03:31:21,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:21,729 INFO L462 AbstractCegarLoop]: Abstraction has 188 states and 309 transitions. [2019-10-15 03:31:21,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:21,729 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 309 transitions. [2019-10-15 03:31:21,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-15 03:31:21,733 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:21,733 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:31:21,733 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:21,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:21,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1609924592, now seen corresponding path program 1 times [2019-10-15 03:31:21,734 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:21,734 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405966340] [2019-10-15 03:31:21,735 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:21,735 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:21,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:21,897 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405966340] [2019-10-15 03:31:21,897 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:21,897 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:21,898 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771480626] [2019-10-15 03:31:21,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:21,898 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:21,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:21,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:21,899 INFO L87 Difference]: Start difference. First operand 188 states and 309 transitions. Second operand 5 states. [2019-10-15 03:31:22,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:22,170 INFO L93 Difference]: Finished difference Result 397 states and 664 transitions. [2019-10-15 03:31:22,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:22,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2019-10-15 03:31:22,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:22,173 INFO L225 Difference]: With dead ends: 397 [2019-10-15 03:31:22,173 INFO L226 Difference]: Without dead ends: 217 [2019-10-15 03:31:22,175 INFO L600 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 [2019-10-15 03:31:22,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2019-10-15 03:31:22,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2019-10-15 03:31:22,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2019-10-15 03:31:22,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 361 transitions. [2019-10-15 03:31:22,200 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 361 transitions. Word has length 72 [2019-10-15 03:31:22,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:22,200 INFO L462 AbstractCegarLoop]: Abstraction has 217 states and 361 transitions. [2019-10-15 03:31:22,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:22,200 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 361 transitions. [2019-10-15 03:31:22,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-15 03:31:22,207 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:22,207 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2019-10-15 03:31:22,207 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:22,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:22,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1747800191, now seen corresponding path program 1 times [2019-10-15 03:31:22,210 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:22,211 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83008730] [2019-10-15 03:31:22,211 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:22,211 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:22,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 03:31:22,336 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83008730] [2019-10-15 03:31:22,336 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:22,336 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:22,337 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725301884] [2019-10-15 03:31:22,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:22,337 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:22,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:22,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:22,338 INFO L87 Difference]: Start difference. First operand 217 states and 361 transitions. Second operand 5 states. [2019-10-15 03:31:22,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:22,533 INFO L93 Difference]: Finished difference Result 441 states and 738 transitions. [2019-10-15 03:31:22,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:22,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2019-10-15 03:31:22,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:22,536 INFO L225 Difference]: With dead ends: 441 [2019-10-15 03:31:22,536 INFO L226 Difference]: Without dead ends: 232 [2019-10-15 03:31:22,537 INFO L600 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 [2019-10-15 03:31:22,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2019-10-15 03:31:22,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2019-10-15 03:31:22,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2019-10-15 03:31:22,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 380 transitions. [2019-10-15 03:31:22,553 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 380 transitions. Word has length 83 [2019-10-15 03:31:22,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:22,553 INFO L462 AbstractCegarLoop]: Abstraction has 230 states and 380 transitions. [2019-10-15 03:31:22,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:22,554 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 380 transitions. [2019-10-15 03:31:22,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-15 03:31:22,556 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:22,556 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:31:22,556 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:22,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:22,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1496182375, now seen corresponding path program 1 times [2019-10-15 03:31:22,557 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:22,557 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058196141] [2019-10-15 03:31:22,557 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:22,557 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:22,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:22,678 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058196141] [2019-10-15 03:31:22,679 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:22,679 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:22,679 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381814762] [2019-10-15 03:31:22,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:22,681 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:22,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:22,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:22,683 INFO L87 Difference]: Start difference. First operand 230 states and 380 transitions. Second operand 5 states. [2019-10-15 03:31:22,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:22,956 INFO L93 Difference]: Finished difference Result 493 states and 825 transitions. [2019-10-15 03:31:22,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:22,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2019-10-15 03:31:22,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:22,958 INFO L225 Difference]: With dead ends: 493 [2019-10-15 03:31:22,959 INFO L226 Difference]: Without dead ends: 271 [2019-10-15 03:31:22,960 INFO L600 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 [2019-10-15 03:31:22,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2019-10-15 03:31:22,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 268. [2019-10-15 03:31:22,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2019-10-15 03:31:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 448 transitions. [2019-10-15 03:31:22,976 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 448 transitions. Word has length 83 [2019-10-15 03:31:22,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:22,976 INFO L462 AbstractCegarLoop]: Abstraction has 268 states and 448 transitions. [2019-10-15 03:31:22,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:22,977 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 448 transitions. [2019-10-15 03:31:22,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-15 03:31:22,978 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:22,979 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2019-10-15 03:31:22,979 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:22,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:22,980 INFO L82 PathProgramCache]: Analyzing trace with hash 2112099635, now seen corresponding path program 1 times [2019-10-15 03:31:22,980 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:22,980 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212144394] [2019-10-15 03:31:22,980 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:22,980 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:22,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 03:31:23,044 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212144394] [2019-10-15 03:31:23,045 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:23,045 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:23,046 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200041672] [2019-10-15 03:31:23,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:23,048 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:23,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:23,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:23,049 INFO L87 Difference]: Start difference. First operand 268 states and 448 transitions. Second operand 5 states. [2019-10-15 03:31:23,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:23,236 INFO L93 Difference]: Finished difference Result 530 states and 890 transitions. [2019-10-15 03:31:23,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:23,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2019-10-15 03:31:23,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:23,239 INFO L225 Difference]: With dead ends: 530 [2019-10-15 03:31:23,240 INFO L226 Difference]: Without dead ends: 270 [2019-10-15 03:31:23,241 INFO L600 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 [2019-10-15 03:31:23,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2019-10-15 03:31:23,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 268. [2019-10-15 03:31:23,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2019-10-15 03:31:23,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 444 transitions. [2019-10-15 03:31:23,256 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 444 transitions. Word has length 84 [2019-10-15 03:31:23,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:23,256 INFO L462 AbstractCegarLoop]: Abstraction has 268 states and 444 transitions. [2019-10-15 03:31:23,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:23,256 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 444 transitions. [2019-10-15 03:31:23,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-15 03:31:23,258 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:23,258 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:31:23,258 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:23,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:23,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1145330856, now seen corresponding path program 1 times [2019-10-15 03:31:23,259 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:23,259 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618468726] [2019-10-15 03:31:23,259 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:23,260 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:23,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:23,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618468726] [2019-10-15 03:31:23,332 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:23,332 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:23,333 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713515805] [2019-10-15 03:31:23,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:23,334 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:23,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:23,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:23,335 INFO L87 Difference]: Start difference. First operand 268 states and 444 transitions. Second operand 5 states. [2019-10-15 03:31:23,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:23,596 INFO L93 Difference]: Finished difference Result 531 states and 883 transitions. [2019-10-15 03:31:23,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:23,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2019-10-15 03:31:23,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:23,598 INFO L225 Difference]: With dead ends: 531 [2019-10-15 03:31:23,599 INFO L226 Difference]: Without dead ends: 269 [2019-10-15 03:31:23,600 INFO L600 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 [2019-10-15 03:31:23,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2019-10-15 03:31:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 266. [2019-10-15 03:31:23,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2019-10-15 03:31:23,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 439 transitions. [2019-10-15 03:31:23,614 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 439 transitions. Word has length 84 [2019-10-15 03:31:23,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:23,614 INFO L462 AbstractCegarLoop]: Abstraction has 266 states and 439 transitions. [2019-10-15 03:31:23,614 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:23,614 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 439 transitions. [2019-10-15 03:31:23,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-15 03:31:23,616 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:23,616 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1] [2019-10-15 03:31:23,616 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:23,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:23,617 INFO L82 PathProgramCache]: Analyzing trace with hash 978213504, now seen corresponding path program 1 times [2019-10-15 03:31:23,617 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:23,617 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161069871] [2019-10-15 03:31:23,617 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:23,618 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:23,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:23,675 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-15 03:31:23,675 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161069871] [2019-10-15 03:31:23,676 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:23,676 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:23,676 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415733970] [2019-10-15 03:31:23,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:23,677 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:23,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:23,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:23,677 INFO L87 Difference]: Start difference. First operand 266 states and 439 transitions. Second operand 5 states. [2019-10-15 03:31:23,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:23,867 INFO L93 Difference]: Finished difference Result 531 states and 879 transitions. [2019-10-15 03:31:23,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:23,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2019-10-15 03:31:23,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:23,869 INFO L225 Difference]: With dead ends: 531 [2019-10-15 03:31:23,870 INFO L226 Difference]: Without dead ends: 273 [2019-10-15 03:31:23,871 INFO L600 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 [2019-10-15 03:31:23,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2019-10-15 03:31:23,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2019-10-15 03:31:23,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2019-10-15 03:31:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 442 transitions. [2019-10-15 03:31:23,887 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 442 transitions. Word has length 92 [2019-10-15 03:31:23,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:23,887 INFO L462 AbstractCegarLoop]: Abstraction has 273 states and 442 transitions. [2019-10-15 03:31:23,887 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:23,887 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 442 transitions. [2019-10-15 03:31:23,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 03:31:23,889 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:23,889 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:23,889 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:23,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:23,890 INFO L82 PathProgramCache]: Analyzing trace with hash -343608478, now seen corresponding path program 1 times [2019-10-15 03:31:23,890 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:23,890 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702438615] [2019-10-15 03:31:23,890 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:23,891 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:23,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 03:31:23,969 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702438615] [2019-10-15 03:31:23,970 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:23,970 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:23,971 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911915392] [2019-10-15 03:31:23,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:23,972 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:23,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:23,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:23,973 INFO L87 Difference]: Start difference. First operand 273 states and 442 transitions. Second operand 5 states. [2019-10-15 03:31:24,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:24,240 INFO L93 Difference]: Finished difference Result 567 states and 925 transitions. [2019-10-15 03:31:24,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:24,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2019-10-15 03:31:24,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:24,245 INFO L225 Difference]: With dead ends: 567 [2019-10-15 03:31:24,245 INFO L226 Difference]: Without dead ends: 302 [2019-10-15 03:31:24,246 INFO L600 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 [2019-10-15 03:31:24,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2019-10-15 03:31:24,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 300. [2019-10-15 03:31:24,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-10-15 03:31:24,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 485 transitions. [2019-10-15 03:31:24,272 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 485 transitions. Word has length 97 [2019-10-15 03:31:24,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:24,272 INFO L462 AbstractCegarLoop]: Abstraction has 300 states and 485 transitions. [2019-10-15 03:31:24,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:24,276 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 485 transitions. [2019-10-15 03:31:24,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 03:31:24,279 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:24,280 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:24,280 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:24,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:24,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1084065418, now seen corresponding path program 1 times [2019-10-15 03:31:24,281 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:24,281 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16662503] [2019-10-15 03:31:24,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:24,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:24,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 03:31:24,374 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16662503] [2019-10-15 03:31:24,375 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:24,375 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:24,376 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073746231] [2019-10-15 03:31:24,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:24,377 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:24,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:24,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:24,379 INFO L87 Difference]: Start difference. First operand 300 states and 485 transitions. Second operand 5 states. [2019-10-15 03:31:24,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:24,660 INFO L93 Difference]: Finished difference Result 594 states and 964 transitions. [2019-10-15 03:31:24,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:24,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-10-15 03:31:24,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:24,663 INFO L225 Difference]: With dead ends: 594 [2019-10-15 03:31:24,663 INFO L226 Difference]: Without dead ends: 302 [2019-10-15 03:31:24,664 INFO L600 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 [2019-10-15 03:31:24,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2019-10-15 03:31:24,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 300. [2019-10-15 03:31:24,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-10-15 03:31:24,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 481 transitions. [2019-10-15 03:31:24,680 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 481 transitions. Word has length 98 [2019-10-15 03:31:24,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:24,681 INFO L462 AbstractCegarLoop]: Abstraction has 300 states and 481 transitions. [2019-10-15 03:31:24,681 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:24,681 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 481 transitions. [2019-10-15 03:31:24,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-15 03:31:24,682 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:24,682 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-15 03:31:24,683 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:24,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:24,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1124689550, now seen corresponding path program 1 times [2019-10-15 03:31:24,683 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:24,683 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443392217] [2019-10-15 03:31:24,684 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:24,684 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:24,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:24,734 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 03:31:24,735 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443392217] [2019-10-15 03:31:24,735 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:24,735 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:24,735 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978804309] [2019-10-15 03:31:24,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:24,736 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:24,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:24,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:24,737 INFO L87 Difference]: Start difference. First operand 300 states and 481 transitions. Second operand 5 states. [2019-10-15 03:31:24,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:24,934 INFO L93 Difference]: Finished difference Result 625 states and 1010 transitions. [2019-10-15 03:31:24,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:24,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2019-10-15 03:31:24,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:24,937 INFO L225 Difference]: With dead ends: 625 [2019-10-15 03:31:24,937 INFO L226 Difference]: Without dead ends: 333 [2019-10-15 03:31:24,938 INFO L600 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 [2019-10-15 03:31:24,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2019-10-15 03:31:24,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 325. [2019-10-15 03:31:24,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2019-10-15 03:31:24,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 519 transitions. [2019-10-15 03:31:24,957 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 519 transitions. Word has length 99 [2019-10-15 03:31:24,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:24,957 INFO L462 AbstractCegarLoop]: Abstraction has 325 states and 519 transitions. [2019-10-15 03:31:24,957 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:24,957 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 519 transitions. [2019-10-15 03:31:24,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 03:31:24,959 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:24,959 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:31:24,959 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:24,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:24,960 INFO L82 PathProgramCache]: Analyzing trace with hash 231675253, now seen corresponding path program 1 times [2019-10-15 03:31:24,960 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:24,960 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006146132] [2019-10-15 03:31:24,960 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:24,961 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:24,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:25,026 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 03:31:25,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006146132] [2019-10-15 03:31:25,027 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:25,027 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:25,027 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896147346] [2019-10-15 03:31:25,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:25,028 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:25,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:25,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:25,029 INFO L87 Difference]: Start difference. First operand 325 states and 519 transitions. Second operand 5 states. [2019-10-15 03:31:25,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:25,231 INFO L93 Difference]: Finished difference Result 663 states and 1063 transitions. [2019-10-15 03:31:25,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:25,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-10-15 03:31:25,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:25,234 INFO L225 Difference]: With dead ends: 663 [2019-10-15 03:31:25,234 INFO L226 Difference]: Without dead ends: 346 [2019-10-15 03:31:25,235 INFO L600 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 [2019-10-15 03:31:25,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2019-10-15 03:31:25,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 344. [2019-10-15 03:31:25,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2019-10-15 03:31:25,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 544 transitions. [2019-10-15 03:31:25,253 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 544 transitions. Word has length 100 [2019-10-15 03:31:25,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:25,254 INFO L462 AbstractCegarLoop]: Abstraction has 344 states and 544 transitions. [2019-10-15 03:31:25,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:25,254 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 544 transitions. [2019-10-15 03:31:25,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 03:31:25,255 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:25,256 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-15 03:31:25,256 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:25,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:25,256 INFO L82 PathProgramCache]: Analyzing trace with hash 339403238, now seen corresponding path program 1 times [2019-10-15 03:31:25,257 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:25,257 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275471270] [2019-10-15 03:31:25,257 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:25,257 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:25,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 03:31:25,322 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275471270] [2019-10-15 03:31:25,322 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:25,322 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:25,322 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429306320] [2019-10-15 03:31:25,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:25,323 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:25,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:25,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:25,324 INFO L87 Difference]: Start difference. First operand 344 states and 544 transitions. Second operand 5 states. [2019-10-15 03:31:25,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:25,547 INFO L93 Difference]: Finished difference Result 688 states and 1093 transitions. [2019-10-15 03:31:25,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:25,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-10-15 03:31:25,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:25,550 INFO L225 Difference]: With dead ends: 688 [2019-10-15 03:31:25,550 INFO L226 Difference]: Without dead ends: 352 [2019-10-15 03:31:25,551 INFO L600 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 [2019-10-15 03:31:25,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2019-10-15 03:31:25,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 344. [2019-10-15 03:31:25,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2019-10-15 03:31:25,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 539 transitions. [2019-10-15 03:31:25,570 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 539 transitions. Word has length 100 [2019-10-15 03:31:25,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:25,570 INFO L462 AbstractCegarLoop]: Abstraction has 344 states and 539 transitions. [2019-10-15 03:31:25,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:25,571 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 539 transitions. [2019-10-15 03:31:25,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-15 03:31:25,572 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:25,572 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:31:25,573 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:25,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:25,573 INFO L82 PathProgramCache]: Analyzing trace with hash 690538849, now seen corresponding path program 1 times [2019-10-15 03:31:25,573 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:25,574 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945874886] [2019-10-15 03:31:25,574 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:25,574 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:25,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:25,639 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 03:31:25,639 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945874886] [2019-10-15 03:31:25,639 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:25,639 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:25,640 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726568662] [2019-10-15 03:31:25,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:25,640 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:25,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:25,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:25,641 INFO L87 Difference]: Start difference. First operand 344 states and 539 transitions. Second operand 5 states. [2019-10-15 03:31:25,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:25,840 INFO L93 Difference]: Finished difference Result 682 states and 1072 transitions. [2019-10-15 03:31:25,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:25,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2019-10-15 03:31:25,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:25,843 INFO L225 Difference]: With dead ends: 682 [2019-10-15 03:31:25,843 INFO L226 Difference]: Without dead ends: 346 [2019-10-15 03:31:25,844 INFO L600 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 [2019-10-15 03:31:25,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2019-10-15 03:31:25,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 344. [2019-10-15 03:31:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2019-10-15 03:31:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 533 transitions. [2019-10-15 03:31:25,863 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 533 transitions. Word has length 101 [2019-10-15 03:31:25,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:25,864 INFO L462 AbstractCegarLoop]: Abstraction has 344 states and 533 transitions. [2019-10-15 03:31:25,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:25,864 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 533 transitions. [2019-10-15 03:31:25,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-15 03:31:25,866 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:25,866 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2019-10-15 03:31:25,866 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:25,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:25,867 INFO L82 PathProgramCache]: Analyzing trace with hash -68275425, now seen corresponding path program 1 times [2019-10-15 03:31:25,867 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:25,867 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536350158] [2019-10-15 03:31:25,868 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:25,868 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:25,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:25,966 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:25,967 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536350158] [2019-10-15 03:31:25,967 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120129237] [2019-10-15 03:31:25,967 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 03:31:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:26,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 03:31:26,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:31:26,138 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:26,139 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:31:26,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:31:26,169 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:31:26,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:31:26,208 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:31:26,227 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:31:26,234 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:31:26,310 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 03:31:26,311 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [474712334] [2019-10-15 03:31:26,341 INFO L162 IcfgInterpreter]: Started Sifa with 56 locations of interest [2019-10-15 03:31:26,341 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:31:26,349 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:31:26,358 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:31:26,359 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:31:26,425 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:31:26,444 INFO L199 IcfgInterpreter]: Interpreting procedure ssl3_accept with input of size 3 for LOIs [2019-10-15 03:31:27,868 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2019-10-15 03:31:27,983 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-15 03:31:28,112 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 196 [2019-10-15 03:31:39,560 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:31:39,562 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:31:40,537 WARN L191 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 153 [2019-10-15 03:31:41,315 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 148 [2019-10-15 03:31:42,080 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 148 [2019-10-15 03:31:42,832 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 151 [2019-10-15 03:31:43,702 WARN L191 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 147 [2019-10-15 03:31:44,495 WARN L191 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 150 [2019-10-15 03:31:45,262 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 153 [2019-10-15 03:31:46,069 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 156 [2019-10-15 03:31:46,843 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 147 [2019-10-15 03:31:47,749 WARN L191 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 156 [2019-10-15 03:31:48,564 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 153 [2019-10-15 03:31:49,638 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 158 [2019-10-15 03:31:50,470 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 161 [2019-10-15 03:31:51,370 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 164 [2019-10-15 03:31:52,204 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 148 [2019-10-15 03:31:53,422 WARN L191 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 189 DAG size of output: 155 [2019-10-15 03:31:54,564 WARN L191 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 167 [2019-10-15 03:31:55,495 WARN L191 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 170 [2019-10-15 03:31:56,440 WARN L191 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 173 [2019-10-15 03:31:57,436 WARN L191 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 176