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_12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:31:04,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:31:04,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:31:04,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:31:04,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:31:04,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:31:04,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:31:04,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:31:04,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:31:04,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:31:04,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:31:04,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:31:04,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:31:04,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:31:04,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:31:04,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:31:04,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:31:04,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:31:04,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:31:04,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:31:04,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:31:04,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:31:04,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:31:04,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:31:04,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:31:04,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:31:04,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:31:04,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:31:04,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:31:04,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:31:04,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:31:04,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:31:04,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:31:04,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:31:04,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:31:04,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:31:04,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:31:04,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:31:04,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:31:04,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:31:04,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:31:04,567 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 03:31:04,580 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:31:04,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:31:04,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:31:04,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:31:04,582 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:31:04,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:31:04,583 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:31:04,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:31:04,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:31:04,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:31:04,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:31:04,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:31:04,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:31:04,586 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:31:04,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:31:04,586 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:31:04,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:31:04,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:31:04,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:31:04,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:31:04,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:31:04,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:31:04,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:31:04,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:31:04,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:31:04,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:31:04,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:31:04,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:31:04,589 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 03:31:04,872 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:31:04,885 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:31:04,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:31:04,890 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:31:04,891 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:31:04,891 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2019-10-15 03:31:04,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f17fd2c6e/d0ceb577f92144b38b84a0ec70f4a61f/FLAG95f16415d [2019-10-15 03:31:05,487 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:31:05,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2019-10-15 03:31:05,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f17fd2c6e/d0ceb577f92144b38b84a0ec70f4a61f/FLAG95f16415d [2019-10-15 03:31:05,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f17fd2c6e/d0ceb577f92144b38b84a0ec70f4a61f [2019-10-15 03:31:05,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:31:05,788 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:31:05,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:31:05,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:31:05,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:31:05,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:31:05" (1/1) ... [2019-10-15 03:31:05,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34101c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:05, skipping insertion in model container [2019-10-15 03:31:05,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:31:05" (1/1) ... [2019-10-15 03:31:05,804 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:31:05,866 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:31:06,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:31:06,165 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:31:06,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:31:06,352 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:31:06,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:06 WrapperNode [2019-10-15 03:31:06,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:31:06,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:31:06,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:31:06,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:31:06,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:06" (1/1) ... [2019-10-15 03:31:06,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:06" (1/1) ... [2019-10-15 03:31:06,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:06" (1/1) ... [2019-10-15 03:31:06,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:06" (1/1) ... [2019-10-15 03:31:06,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:06" (1/1) ... [2019-10-15 03:31:06,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:06" (1/1) ... [2019-10-15 03:31:06,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:06" (1/1) ... [2019-10-15 03:31:06,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:31:06,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:31:06,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:31:06,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:31:06,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:06" (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 03:31:06,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:31:06,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:31:06,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2019-10-15 03:31:06,486 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:31:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:31:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-15 03:31:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:31:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-15 03:31:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-15 03:31:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 03:31:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2019-10-15 03:31:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:31:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:31:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:31:06,738 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-15 03:31:07,336 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2019-10-15 03:31:07,337 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2019-10-15 03:31:07,705 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:31:07,706 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:31:07,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:31:07 BoogieIcfgContainer [2019-10-15 03:31:07,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:31:07,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:31:07,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:31:07,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:31:07,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:31:05" (1/3) ... [2019-10-15 03:31:07,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3440e8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:31:07, skipping insertion in model container [2019-10-15 03:31:07,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:06" (2/3) ... [2019-10-15 03:31:07,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3440e8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:31:07, skipping insertion in model container [2019-10-15 03:31:07,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:31:07" (3/3) ... [2019-10-15 03:31:07,719 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2019-10-15 03:31:07,730 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:31:07,741 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:31:07,754 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:31:07,793 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:31:07,794 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:31:07,794 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:31:07,794 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:31:07,794 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:31:07,794 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:31:07,795 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:31:07,795 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:31:07,834 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2019-10-15 03:31:07,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-15 03:31:07,845 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:07,846 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] [2019-10-15 03:31:07,849 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:07,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:07,856 INFO L82 PathProgramCache]: Analyzing trace with hash 474089761, now seen corresponding path program 1 times [2019-10-15 03:31:07,868 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:07,868 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276673804] [2019-10-15 03:31:07,869 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:07,869 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:07,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:08,158 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 03:31:08,159 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276673804] [2019-10-15 03:31:08,160 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:08,160 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:31:08,160 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045293104] [2019-10-15 03:31:08,165 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:31:08,165 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:08,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:31:08,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:08,182 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 3 states. [2019-10-15 03:31:08,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:08,480 INFO L93 Difference]: Finished difference Result 307 states and 534 transitions. [2019-10-15 03:31:08,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:31:08,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-10-15 03:31:08,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:08,496 INFO L225 Difference]: With dead ends: 307 [2019-10-15 03:31:08,496 INFO L226 Difference]: Without dead ends: 176 [2019-10-15 03:31:08,500 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:08,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2019-10-15 03:31:08,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 154. [2019-10-15 03:31:08,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-10-15 03:31:08,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 238 transitions. [2019-10-15 03:31:08,563 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 238 transitions. Word has length 27 [2019-10-15 03:31:08,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:08,564 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 238 transitions. [2019-10-15 03:31:08,564 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:31:08,564 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 238 transitions. [2019-10-15 03:31:08,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-15 03:31:08,566 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:08,566 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] [2019-10-15 03:31:08,567 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:08,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:08,567 INFO L82 PathProgramCache]: Analyzing trace with hash -85931311, now seen corresponding path program 1 times [2019-10-15 03:31:08,567 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:08,568 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671890262] [2019-10-15 03:31:08,568 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:08,568 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:08,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:08,644 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 03:31:08,644 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671890262] [2019-10-15 03:31:08,644 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:08,645 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:31:08,645 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30072592] [2019-10-15 03:31:08,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:31:08,647 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:08,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:31:08,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:08,647 INFO L87 Difference]: Start difference. First operand 154 states and 238 transitions. Second operand 3 states. [2019-10-15 03:31:08,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:08,808 INFO L93 Difference]: Finished difference Result 307 states and 477 transitions. [2019-10-15 03:31:08,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:31:08,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-10-15 03:31:08,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:08,815 INFO L225 Difference]: With dead ends: 307 [2019-10-15 03:31:08,817 INFO L226 Difference]: Without dead ends: 161 [2019-10-15 03:31:08,819 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:08,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2019-10-15 03:31:08,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2019-10-15 03:31:08,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2019-10-15 03:31:08,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 246 transitions. [2019-10-15 03:31:08,854 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 246 transitions. Word has length 28 [2019-10-15 03:31:08,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:08,856 INFO L462 AbstractCegarLoop]: Abstraction has 161 states and 246 transitions. [2019-10-15 03:31:08,857 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:31:08,857 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 246 transitions. [2019-10-15 03:31:08,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-15 03:31:08,859 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:08,860 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] [2019-10-15 03:31:08,861 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:08,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:08,861 INFO L82 PathProgramCache]: Analyzing trace with hash 2048900659, now seen corresponding path program 1 times [2019-10-15 03:31:08,862 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:08,862 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389450937] [2019-10-15 03:31:08,862 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:08,863 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:08,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:08,981 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 03:31:08,983 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389450937] [2019-10-15 03:31:08,984 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:08,985 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:31:08,986 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478286403] [2019-10-15 03:31:08,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:31:08,987 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:08,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:31:08,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:08,988 INFO L87 Difference]: Start difference. First operand 161 states and 246 transitions. Second operand 3 states. [2019-10-15 03:31:09,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:09,242 INFO L93 Difference]: Finished difference Result 368 states and 577 transitions. [2019-10-15 03:31:09,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:31:09,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2019-10-15 03:31:09,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:09,248 INFO L225 Difference]: With dead ends: 368 [2019-10-15 03:31:09,248 INFO L226 Difference]: Without dead ends: 215 [2019-10-15 03:31:09,249 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:09,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2019-10-15 03:31:09,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 182. [2019-10-15 03:31:09,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2019-10-15 03:31:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 280 transitions. [2019-10-15 03:31:09,273 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 280 transitions. Word has length 29 [2019-10-15 03:31:09,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:09,273 INFO L462 AbstractCegarLoop]: Abstraction has 182 states and 280 transitions. [2019-10-15 03:31:09,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:31:09,273 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 280 transitions. [2019-10-15 03:31:09,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-15 03:31:09,275 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:09,275 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] [2019-10-15 03:31:09,276 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:09,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:09,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1728814922, now seen corresponding path program 1 times [2019-10-15 03:31:09,276 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:09,276 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143573645] [2019-10-15 03:31:09,277 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:09,277 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:09,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:09,352 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 03:31:09,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143573645] [2019-10-15 03:31:09,353 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:09,353 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:31:09,354 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140284659] [2019-10-15 03:31:09,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:31:09,354 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:09,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:31:09,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:31:09,355 INFO L87 Difference]: Start difference. First operand 182 states and 280 transitions. Second operand 4 states. [2019-10-15 03:31:09,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:09,573 INFO L93 Difference]: Finished difference Result 395 states and 604 transitions. [2019-10-15 03:31:09,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:09,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2019-10-15 03:31:09,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:09,576 INFO L225 Difference]: With dead ends: 395 [2019-10-15 03:31:09,576 INFO L226 Difference]: Without dead ends: 221 [2019-10-15 03:31:09,578 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:09,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2019-10-15 03:31:09,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 204. [2019-10-15 03:31:09,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2019-10-15 03:31:09,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 310 transitions. [2019-10-15 03:31:09,591 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 310 transitions. Word has length 29 [2019-10-15 03:31:09,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:09,592 INFO L462 AbstractCegarLoop]: Abstraction has 204 states and 310 transitions. [2019-10-15 03:31:09,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:31:09,592 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 310 transitions. [2019-10-15 03:31:09,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-15 03:31:09,594 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:09,594 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] [2019-10-15 03:31:09,595 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:09,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:09,595 INFO L82 PathProgramCache]: Analyzing trace with hash 88334629, now seen corresponding path program 1 times [2019-10-15 03:31:09,595 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:09,595 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225247807] [2019-10-15 03:31:09,596 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:09,596 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:09,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:09,666 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 03:31:09,667 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225247807] [2019-10-15 03:31:09,668 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:09,668 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:31:09,668 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905567843] [2019-10-15 03:31:09,668 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:31:09,669 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:09,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:31:09,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:09,670 INFO L87 Difference]: Start difference. First operand 204 states and 310 transitions. Second operand 3 states. [2019-10-15 03:31:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:09,866 INFO L93 Difference]: Finished difference Result 444 states and 694 transitions. [2019-10-15 03:31:09,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:31:09,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2019-10-15 03:31:09,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:09,868 INFO L225 Difference]: With dead ends: 444 [2019-10-15 03:31:09,868 INFO L226 Difference]: Without dead ends: 204 [2019-10-15 03:31:09,869 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:09,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-10-15 03:31:09,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2019-10-15 03:31:09,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2019-10-15 03:31:09,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 307 transitions. [2019-10-15 03:31:09,881 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 307 transitions. Word has length 29 [2019-10-15 03:31:09,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:09,881 INFO L462 AbstractCegarLoop]: Abstraction has 204 states and 307 transitions. [2019-10-15 03:31:09,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:31:09,882 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 307 transitions. [2019-10-15 03:31:09,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-15 03:31:09,883 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:09,883 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] [2019-10-15 03:31:09,884 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:09,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:09,884 INFO L82 PathProgramCache]: Analyzing trace with hash 2092423438, now seen corresponding path program 1 times [2019-10-15 03:31:09,884 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:09,884 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583838123] [2019-10-15 03:31:09,885 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:09,885 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:09,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:09,937 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 03:31:09,937 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583838123] [2019-10-15 03:31:09,938 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:09,938 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:31:09,938 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536855515] [2019-10-15 03:31:09,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:31:09,939 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:09,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:31:09,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:31:09,939 INFO L87 Difference]: Start difference. First operand 204 states and 307 transitions. Second operand 4 states. [2019-10-15 03:31:10,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:10,139 INFO L93 Difference]: Finished difference Result 430 states and 644 transitions. [2019-10-15 03:31:10,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:10,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-10-15 03:31:10,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:10,145 INFO L225 Difference]: With dead ends: 430 [2019-10-15 03:31:10,145 INFO L226 Difference]: Without dead ends: 234 [2019-10-15 03:31:10,148 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:10,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2019-10-15 03:31:10,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 202. [2019-10-15 03:31:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2019-10-15 03:31:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 305 transitions. [2019-10-15 03:31:10,163 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 305 transitions. Word has length 30 [2019-10-15 03:31:10,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:10,170 INFO L462 AbstractCegarLoop]: Abstraction has 202 states and 305 transitions. [2019-10-15 03:31:10,170 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:31:10,170 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 305 transitions. [2019-10-15 03:31:10,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-15 03:31:10,174 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:10,174 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] [2019-10-15 03:31:10,175 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:10,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:10,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1007897261, now seen corresponding path program 1 times [2019-10-15 03:31:10,175 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:10,175 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327479129] [2019-10-15 03:31:10,176 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:10,176 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:10,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:10,223 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 03:31:10,223 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327479129] [2019-10-15 03:31:10,223 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:10,223 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:10,224 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600966834] [2019-10-15 03:31:10,224 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:10,224 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:10,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:10,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:10,225 INFO L87 Difference]: Start difference. First operand 202 states and 305 transitions. Second operand 5 states. [2019-10-15 03:31:10,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:10,423 INFO L93 Difference]: Finished difference Result 480 states and 746 transitions. [2019-10-15 03:31:10,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:10,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-10-15 03:31:10,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:10,426 INFO L225 Difference]: With dead ends: 480 [2019-10-15 03:31:10,426 INFO L226 Difference]: Without dead ends: 261 [2019-10-15 03:31:10,427 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 03:31:10,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2019-10-15 03:31:10,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 257. [2019-10-15 03:31:10,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2019-10-15 03:31:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 373 transitions. [2019-10-15 03:31:10,438 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 373 transitions. Word has length 43 [2019-10-15 03:31:10,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:10,438 INFO L462 AbstractCegarLoop]: Abstraction has 257 states and 373 transitions. [2019-10-15 03:31:10,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:10,438 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 373 transitions. [2019-10-15 03:31:10,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-15 03:31:10,440 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:10,440 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2019-10-15 03:31:10,440 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:10,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:10,440 INFO L82 PathProgramCache]: Analyzing trace with hash -737561394, now seen corresponding path program 1 times [2019-10-15 03:31:10,441 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:10,441 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105126734] [2019-10-15 03:31:10,441 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:10,441 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:10,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:10,479 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:10,480 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105126734] [2019-10-15 03:31:10,480 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:10,480 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:31:10,480 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704866056] [2019-10-15 03:31:10,481 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:31:10,481 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:10,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:31:10,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:10,482 INFO L87 Difference]: Start difference. First operand 257 states and 373 transitions. Second operand 3 states. [2019-10-15 03:31:10,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:10,634 INFO L93 Difference]: Finished difference Result 525 states and 764 transitions. [2019-10-15 03:31:10,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:31:10,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2019-10-15 03:31:10,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:10,640 INFO L225 Difference]: With dead ends: 525 [2019-10-15 03:31:10,640 INFO L226 Difference]: Without dead ends: 276 [2019-10-15 03:31:10,641 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:10,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2019-10-15 03:31:10,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 274. [2019-10-15 03:31:10,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2019-10-15 03:31:10,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 391 transitions. [2019-10-15 03:31:10,654 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 391 transitions. Word has length 58 [2019-10-15 03:31:10,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:10,654 INFO L462 AbstractCegarLoop]: Abstraction has 274 states and 391 transitions. [2019-10-15 03:31:10,654 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:31:10,655 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 391 transitions. [2019-10-15 03:31:10,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-15 03:31:10,656 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:10,657 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, 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 03:31:10,657 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:10,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:10,657 INFO L82 PathProgramCache]: Analyzing trace with hash -331236626, now seen corresponding path program 1 times [2019-10-15 03:31:10,657 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:10,658 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001365084] [2019-10-15 03:31:10,658 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:10,658 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:10,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:10,754 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:31:10,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001365084] [2019-10-15 03:31:10,755 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:10,755 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:10,756 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931340511] [2019-10-15 03:31:10,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:10,756 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:10,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:10,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:10,757 INFO L87 Difference]: Start difference. First operand 274 states and 391 transitions. Second operand 5 states. [2019-10-15 03:31:11,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:11,019 INFO L93 Difference]: Finished difference Result 577 states and 824 transitions. [2019-10-15 03:31:11,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:11,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2019-10-15 03:31:11,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:11,023 INFO L225 Difference]: With dead ends: 577 [2019-10-15 03:31:11,023 INFO L226 Difference]: Without dead ends: 298 [2019-10-15 03:31:11,024 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 03:31:11,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2019-10-15 03:31:11,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 274. [2019-10-15 03:31:11,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2019-10-15 03:31:11,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 391 transitions. [2019-10-15 03:31:11,041 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 391 transitions. Word has length 71 [2019-10-15 03:31:11,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:11,042 INFO L462 AbstractCegarLoop]: Abstraction has 274 states and 391 transitions. [2019-10-15 03:31:11,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:11,042 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 391 transitions. [2019-10-15 03:31:11,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-15 03:31:11,043 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:11,044 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2019-10-15 03:31:11,044 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:11,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:11,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1097788276, now seen corresponding path program 1 times [2019-10-15 03:31:11,045 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:11,045 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274093588] [2019-10-15 03:31:11,045 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:11,045 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:11,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:11,164 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 03:31:11,164 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274093588] [2019-10-15 03:31:11,165 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:11,165 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:31:11,166 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366684814] [2019-10-15 03:31:11,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:31:11,168 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:11,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:31:11,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:31:11,168 INFO L87 Difference]: Start difference. First operand 274 states and 391 transitions. Second operand 4 states. [2019-10-15 03:31:11,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:11,586 INFO L93 Difference]: Finished difference Result 612 states and 889 transitions. [2019-10-15 03:31:11,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:31:11,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2019-10-15 03:31:11,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:11,589 INFO L225 Difference]: With dead ends: 612 [2019-10-15 03:31:11,589 INFO L226 Difference]: Without dead ends: 346 [2019-10-15 03:31:11,591 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:31:11,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2019-10-15 03:31:11,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 338. [2019-10-15 03:31:11,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2019-10-15 03:31:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 470 transitions. [2019-10-15 03:31:11,606 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 470 transitions. Word has length 76 [2019-10-15 03:31:11,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:11,606 INFO L462 AbstractCegarLoop]: Abstraction has 338 states and 470 transitions. [2019-10-15 03:31:11,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:31:11,606 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 470 transitions. [2019-10-15 03:31:11,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-15 03:31:11,608 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:11,608 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:11,608 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:11,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:11,609 INFO L82 PathProgramCache]: Analyzing trace with hash -558338905, now seen corresponding path program 1 times [2019-10-15 03:31:11,609 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:11,609 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611743087] [2019-10-15 03:31:11,609 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:11,609 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:11,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:31:11,662 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611743087] [2019-10-15 03:31:11,662 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:11,662 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:31:11,662 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462436993] [2019-10-15 03:31:11,663 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:31:11,663 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:11,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:31:11,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:11,664 INFO L87 Difference]: Start difference. First operand 338 states and 470 transitions. Second operand 3 states. [2019-10-15 03:31:11,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:11,885 INFO L93 Difference]: Finished difference Result 736 states and 1033 transitions. [2019-10-15 03:31:11,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:31:11,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-10-15 03:31:11,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:11,888 INFO L225 Difference]: With dead ends: 736 [2019-10-15 03:31:11,888 INFO L226 Difference]: Without dead ends: 403 [2019-10-15 03:31:11,889 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:11,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2019-10-15 03:31:11,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 390. [2019-10-15 03:31:11,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2019-10-15 03:31:11,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 540 transitions. [2019-10-15 03:31:11,903 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 540 transitions. Word has length 86 [2019-10-15 03:31:11,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:11,903 INFO L462 AbstractCegarLoop]: Abstraction has 390 states and 540 transitions. [2019-10-15 03:31:11,903 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:31:11,904 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 540 transitions. [2019-10-15 03:31:11,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 03:31:11,905 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:11,905 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:11,906 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:11,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:11,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1085897944, now seen corresponding path program 1 times [2019-10-15 03:31:11,906 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:11,906 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941235977] [2019-10-15 03:31:11,907 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:11,907 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:11,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:11,956 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 03:31:11,956 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941235977] [2019-10-15 03:31:11,956 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:11,957 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:31:11,957 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065441402] [2019-10-15 03:31:11,957 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:31:11,957 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:11,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:31:11,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:11,958 INFO L87 Difference]: Start difference. First operand 390 states and 540 transitions. Second operand 3 states. [2019-10-15 03:31:12,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:12,085 INFO L93 Difference]: Finished difference Result 808 states and 1125 transitions. [2019-10-15 03:31:12,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:31:12,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2019-10-15 03:31:12,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:12,088 INFO L225 Difference]: With dead ends: 808 [2019-10-15 03:31:12,088 INFO L226 Difference]: Without dead ends: 426 [2019-10-15 03:31:12,089 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:12,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2019-10-15 03:31:12,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 416. [2019-10-15 03:31:12,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2019-10-15 03:31:12,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 570 transitions. [2019-10-15 03:31:12,105 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 570 transitions. Word has length 97 [2019-10-15 03:31:12,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:12,106 INFO L462 AbstractCegarLoop]: Abstraction has 416 states and 570 transitions. [2019-10-15 03:31:12,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:31:12,106 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 570 transitions. [2019-10-15 03:31:12,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-15 03:31:12,107 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:12,108 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:12,108 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:12,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:12,108 INFO L82 PathProgramCache]: Analyzing trace with hash -802516081, now seen corresponding path program 1 times [2019-10-15 03:31:12,109 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:12,109 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434623678] [2019-10-15 03:31:12,109 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:12,109 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:12,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-10-15 03:31:12,158 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434623678] [2019-10-15 03:31:12,159 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:12,159 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:31:12,159 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387613975] [2019-10-15 03:31:12,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:31:12,160 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:12,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:31:12,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:12,160 INFO L87 Difference]: Start difference. First operand 416 states and 570 transitions. Second operand 3 states. [2019-10-15 03:31:12,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:12,311 INFO L93 Difference]: Finished difference Result 860 states and 1186 transitions. [2019-10-15 03:31:12,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:31:12,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2019-10-15 03:31:12,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:12,315 INFO L225 Difference]: With dead ends: 860 [2019-10-15 03:31:12,315 INFO L226 Difference]: Without dead ends: 452 [2019-10-15 03:31:12,317 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:31:12,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2019-10-15 03:31:12,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 444. [2019-10-15 03:31:12,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2019-10-15 03:31:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 602 transitions. [2019-10-15 03:31:12,334 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 602 transitions. Word has length 122 [2019-10-15 03:31:12,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:12,335 INFO L462 AbstractCegarLoop]: Abstraction has 444 states and 602 transitions. [2019-10-15 03:31:12,335 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:31:12,335 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 602 transitions. [2019-10-15 03:31:12,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-15 03:31:12,336 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:12,337 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:12,337 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:12,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:12,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1324115857, now seen corresponding path program 1 times [2019-10-15 03:31:12,338 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:12,338 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209124394] [2019-10-15 03:31:12,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:12,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:12,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-10-15 03:31:12,521 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209124394] [2019-10-15 03:31:12,521 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040415079] [2019-10-15 03:31:12,522 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 03:31:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:12,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:31:12,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:31:12,776 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-10-15 03:31:12,776 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:31:12,855 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-10-15 03:31:12,855 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1902592404] [2019-10-15 03:31:12,927 INFO L162 IcfgInterpreter]: Started Sifa with 59 locations of interest [2019-10-15 03:31:12,931 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:31:12,941 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:31:12,953 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:31:12,954 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:31:13,029 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:31:13,045 INFO L199 IcfgInterpreter]: Interpreting procedure ssl3_accept with input of size 3 for LOIs [2019-10-15 03:31:14,048 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2019-10-15 03:31:15,366 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 182 [2019-10-15 03:31:15,485 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2019-10-15 03:31:16,214 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2019-10-15 03:31:19,424 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 189 [2019-10-15 03:31:19,614 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-10-15 03:31:20,129 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 195 [2019-10-15 03:31:38,318 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:31:38,320 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:31:39,629 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 194 DAG size of output: 182 [2019-10-15 03:31:40,329 WARN L191 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 140 [2019-10-15 03:31:41,480 WARN L191 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 168 DAG size of output: 160 [2019-10-15 03:31:42,155 WARN L191 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 143