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_2.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:31:14,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:31:14,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:31:14,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-15 03:31:14,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:31:14,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:31:14,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:31:14,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:31:14,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:31:14,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:31:14,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:31:14,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:31:14,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:31:14,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:31:14,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:31:14,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:31:14,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 03:31:15,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:31:15,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:31:15,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:31:15,009 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 03:31:15,025 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:31:15,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:31:15,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:31:15,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:31:15,027 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:31:15,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:31:15,028 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:31:15,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:31:15,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:31:15,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:31:15,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:31:15,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:31:15,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:31:15,029 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:31:15,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:31:15,029 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:31:15,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:31:15,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:31:15,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:31:15,030 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:31:15,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:31:15,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:31:15,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:31:15,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:31:15,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:31:15,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:31:15,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:31:15,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:31:15,032 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 03:31:15,329 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:31:15,349 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:31:15,352 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:31:15,354 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:31:15,354 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:31:15,355 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-1.c [2019-10-15 03:31:15,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07dda11ec/f766dbf0730a449da2b799747c8e2f9c/FLAGb463450c4 [2019-10-15 03:31:15,934 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:31:15,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-1.c [2019-10-15 03:31:15,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07dda11ec/f766dbf0730a449da2b799747c8e2f9c/FLAGb463450c4 [2019-10-15 03:31:16,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07dda11ec/f766dbf0730a449da2b799747c8e2f9c [2019-10-15 03:31:16,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:31:16,294 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:31:16,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:31:16,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:31:16,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:31:16,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:31:16" (1/1) ... [2019-10-15 03:31:16,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@734aed89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:16, skipping insertion in model container [2019-10-15 03:31:16,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:31:16" (1/1) ... [2019-10-15 03:31:16,312 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:31:16,363 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:31:16,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:31:16,592 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:31:16,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:31:16,769 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:31:16,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:16 WrapperNode [2019-10-15 03:31:16,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:31:16,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:31:16,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:31:16,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:31:16,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:16" (1/1) ... [2019-10-15 03:31:16,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:16" (1/1) ... [2019-10-15 03:31:16,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:16" (1/1) ... [2019-10-15 03:31:16,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:16" (1/1) ... [2019-10-15 03:31:16,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:16" (1/1) ... [2019-10-15 03:31:16,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:16" (1/1) ... [2019-10-15 03:31:16,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:16" (1/1) ... [2019-10-15 03:31:16,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:31:16,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:31:16,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:31:16,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:31:16,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:16" (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 03:31:16,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:31:16,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:31:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2019-10-15 03:31:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:31:16,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:31:16,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-15 03:31:16,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:31:16,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-15 03:31:16,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 03:31:16,917 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2019-10-15 03:31:16,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:31:16,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:31:16,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:31:17,155 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-15 03:31:17,814 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2019-10-15 03:31:17,814 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2019-10-15 03:31:18,123 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:31:18,124 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:31:18,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:31:18 BoogieIcfgContainer [2019-10-15 03:31:18,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:31:18,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:31:18,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:31:18,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:31:18,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:31:16" (1/3) ... [2019-10-15 03:31:18,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b1109a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:31:18, skipping insertion in model container [2019-10-15 03:31:18,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:16" (2/3) ... [2019-10-15 03:31:18,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b1109a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:31:18, skipping insertion in model container [2019-10-15 03:31:18,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:31:18" (3/3) ... [2019-10-15 03:31:18,145 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_2.cil-1.c [2019-10-15 03:31:18,171 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:31:18,185 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:31:18,200 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:31:18,245 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:31:18,245 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:31:18,246 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:31:18,246 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:31:18,246 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:31:18,246 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:31:18,246 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:31:18,247 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:31:18,286 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2019-10-15 03:31:18,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-15 03:31:18,300 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:18,302 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 03:31:18,305 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:18,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:18,311 INFO L82 PathProgramCache]: Analyzing trace with hash -557713943, now seen corresponding path program 1 times [2019-10-15 03:31:18,321 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:18,321 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125576220] [2019-10-15 03:31:18,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:18,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:18,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:18,621 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 03:31:18,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125576220] [2019-10-15 03:31:18,623 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:18,623 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:18,623 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858436591] [2019-10-15 03:31:18,628 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:18,628 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:18,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:18,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:18,645 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 5 states. [2019-10-15 03:31:19,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:19,099 INFO L93 Difference]: Finished difference Result 272 states and 467 transitions. [2019-10-15 03:31:19,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:19,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2019-10-15 03:31:19,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:19,116 INFO L225 Difference]: With dead ends: 272 [2019-10-15 03:31:19,117 INFO L226 Difference]: Without dead ends: 154 [2019-10-15 03:31:19,121 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 03:31:19,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-10-15 03:31:19,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 149. [2019-10-15 03:31:19,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-10-15 03:31:19,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 236 transitions. [2019-10-15 03:31:19,228 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 236 transitions. Word has length 45 [2019-10-15 03:31:19,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:19,229 INFO L462 AbstractCegarLoop]: Abstraction has 149 states and 236 transitions. [2019-10-15 03:31:19,229 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:19,229 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 236 transitions. [2019-10-15 03:31:19,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 03:31:19,231 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:19,231 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 03:31:19,232 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:19,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:19,232 INFO L82 PathProgramCache]: Analyzing trace with hash -116387922, now seen corresponding path program 1 times [2019-10-15 03:31:19,233 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:19,233 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828158294] [2019-10-15 03:31:19,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:19,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:19,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:19,380 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 03:31:19,382 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828158294] [2019-10-15 03:31:19,382 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:19,382 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:19,382 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35619149] [2019-10-15 03:31:19,385 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:19,385 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:19,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:19,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:19,386 INFO L87 Difference]: Start difference. First operand 149 states and 236 transitions. Second operand 5 states. [2019-10-15 03:31:19,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:19,802 INFO L93 Difference]: Finished difference Result 336 states and 546 transitions. [2019-10-15 03:31:19,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:19,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2019-10-15 03:31:19,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:19,805 INFO L225 Difference]: With dead ends: 336 [2019-10-15 03:31:19,805 INFO L226 Difference]: Without dead ends: 193 [2019-10-15 03:31:19,807 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 03:31:19,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-10-15 03:31:19,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 188. [2019-10-15 03:31:19,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-10-15 03:31:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 309 transitions. [2019-10-15 03:31:19,828 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 309 transitions. Word has length 46 [2019-10-15 03:31:19,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:19,829 INFO L462 AbstractCegarLoop]: Abstraction has 188 states and 309 transitions. [2019-10-15 03:31:19,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:19,829 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 309 transitions. [2019-10-15 03:31:19,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-15 03:31:19,839 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:19,841 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 03:31:19,842 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:19,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:19,842 INFO L82 PathProgramCache]: Analyzing trace with hash -442911765, now seen corresponding path program 1 times [2019-10-15 03:31:19,843 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:19,843 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995281149] [2019-10-15 03:31:19,843 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:19,844 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:19,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:19,973 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 03:31:19,974 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995281149] [2019-10-15 03:31:19,975 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:19,978 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:19,978 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484181064] [2019-10-15 03:31:19,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:19,981 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:19,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:19,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:19,982 INFO L87 Difference]: Start difference. First operand 188 states and 309 transitions. Second operand 5 states. [2019-10-15 03:31:20,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:20,214 INFO L93 Difference]: Finished difference Result 397 states and 664 transitions. [2019-10-15 03:31:20,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:20,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2019-10-15 03:31:20,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:20,217 INFO L225 Difference]: With dead ends: 397 [2019-10-15 03:31:20,217 INFO L226 Difference]: Without dead ends: 217 [2019-10-15 03:31:20,218 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 03:31:20,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2019-10-15 03:31:20,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2019-10-15 03:31:20,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2019-10-15 03:31:20,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 361 transitions. [2019-10-15 03:31:20,234 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 361 transitions. Word has length 72 [2019-10-15 03:31:20,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:20,234 INFO L462 AbstractCegarLoop]: Abstraction has 217 states and 361 transitions. [2019-10-15 03:31:20,235 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:20,235 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 361 transitions. [2019-10-15 03:31:20,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-15 03:31:20,236 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:20,237 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 03:31:20,237 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:20,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:20,237 INFO L82 PathProgramCache]: Analyzing trace with hash -554937244, now seen corresponding path program 1 times [2019-10-15 03:31:20,238 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:20,238 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673698494] [2019-10-15 03:31:20,238 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:20,238 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:20,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:20,344 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 03:31:20,345 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673698494] [2019-10-15 03:31:20,345 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:20,345 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:20,345 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906049596] [2019-10-15 03:31:20,346 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:20,346 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:20,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:20,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:20,347 INFO L87 Difference]: Start difference. First operand 217 states and 361 transitions. Second operand 5 states. [2019-10-15 03:31:20,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:20,535 INFO L93 Difference]: Finished difference Result 441 states and 738 transitions. [2019-10-15 03:31:20,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:20,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2019-10-15 03:31:20,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:20,537 INFO L225 Difference]: With dead ends: 441 [2019-10-15 03:31:20,537 INFO L226 Difference]: Without dead ends: 232 [2019-10-15 03:31:20,539 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 03:31:20,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2019-10-15 03:31:20,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2019-10-15 03:31:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2019-10-15 03:31:20,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 380 transitions. [2019-10-15 03:31:20,564 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 380 transitions. Word has length 83 [2019-10-15 03:31:20,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:20,565 INFO L462 AbstractCegarLoop]: Abstraction has 230 states and 380 transitions. [2019-10-15 03:31:20,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:20,565 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 380 transitions. [2019-10-15 03:31:20,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-15 03:31:20,567 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:20,567 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 03:31:20,568 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:20,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:20,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1739624954, now seen corresponding path program 1 times [2019-10-15 03:31:20,569 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:20,569 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989566193] [2019-10-15 03:31:20,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:20,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:20,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:20,686 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 03:31:20,687 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989566193] [2019-10-15 03:31:20,687 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:20,688 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:20,688 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905746] [2019-10-15 03:31:20,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:20,689 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:20,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:20,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:20,691 INFO L87 Difference]: Start difference. First operand 230 states and 380 transitions. Second operand 5 states. [2019-10-15 03:31:20,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:20,939 INFO L93 Difference]: Finished difference Result 493 states and 825 transitions. [2019-10-15 03:31:20,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:20,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2019-10-15 03:31:20,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:20,942 INFO L225 Difference]: With dead ends: 493 [2019-10-15 03:31:20,942 INFO L226 Difference]: Without dead ends: 271 [2019-10-15 03:31:20,943 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 03:31:20,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2019-10-15 03:31:20,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 268. [2019-10-15 03:31:20,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2019-10-15 03:31:20,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 448 transitions. [2019-10-15 03:31:20,957 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 448 transitions. Word has length 83 [2019-10-15 03:31:20,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:20,958 INFO L462 AbstractCegarLoop]: Abstraction has 268 states and 448 transitions. [2019-10-15 03:31:20,958 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:20,958 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 448 transitions. [2019-10-15 03:31:20,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-15 03:31:20,959 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:20,959 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 03:31:20,960 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:20,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:20,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1839282350, now seen corresponding path program 1 times [2019-10-15 03:31:20,960 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:20,961 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136411730] [2019-10-15 03:31:20,961 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:20,961 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:20,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:21,014 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 03:31:21,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136411730] [2019-10-15 03:31:21,015 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:21,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:21,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374910681] [2019-10-15 03:31:21,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:21,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:21,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:21,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:21,017 INFO L87 Difference]: Start difference. First operand 268 states and 448 transitions. Second operand 5 states. [2019-10-15 03:31:21,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:21,206 INFO L93 Difference]: Finished difference Result 530 states and 890 transitions. [2019-10-15 03:31:21,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:21,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2019-10-15 03:31:21,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:21,209 INFO L225 Difference]: With dead ends: 530 [2019-10-15 03:31:21,209 INFO L226 Difference]: Without dead ends: 270 [2019-10-15 03:31:21,210 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 03:31:21,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2019-10-15 03:31:21,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 268. [2019-10-15 03:31:21,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2019-10-15 03:31:21,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 444 transitions. [2019-10-15 03:31:21,224 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 444 transitions. Word has length 84 [2019-10-15 03:31:21,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:21,225 INFO L462 AbstractCegarLoop]: Abstraction has 268 states and 444 transitions. [2019-10-15 03:31:21,225 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:21,225 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 444 transitions. [2019-10-15 03:31:21,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-15 03:31:21,226 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:21,226 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 03:31:21,227 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:21,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:21,227 INFO L82 PathProgramCache]: Analyzing trace with hash 2116091039, now seen corresponding path program 1 times [2019-10-15 03:31:21,227 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:21,227 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052488780] [2019-10-15 03:31:21,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:21,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:21,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:21,358 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 03:31:21,359 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052488780] [2019-10-15 03:31:21,359 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:21,359 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:21,360 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320096585] [2019-10-15 03:31:21,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:21,360 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:21,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:21,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:21,361 INFO L87 Difference]: Start difference. First operand 268 states and 444 transitions. Second operand 5 states. [2019-10-15 03:31:21,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:21,763 INFO L93 Difference]: Finished difference Result 531 states and 883 transitions. [2019-10-15 03:31:21,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:21,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2019-10-15 03:31:21,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:21,766 INFO L225 Difference]: With dead ends: 531 [2019-10-15 03:31:21,766 INFO L226 Difference]: Without dead ends: 269 [2019-10-15 03:31:21,771 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 03:31:21,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2019-10-15 03:31:21,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 266. [2019-10-15 03:31:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2019-10-15 03:31:21,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 439 transitions. [2019-10-15 03:31:21,784 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 439 transitions. Word has length 84 [2019-10-15 03:31:21,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:21,785 INFO L462 AbstractCegarLoop]: Abstraction has 266 states and 439 transitions. [2019-10-15 03:31:21,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:21,785 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 439 transitions. [2019-10-15 03:31:21,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-15 03:31:21,786 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:21,786 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 03:31:21,787 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:21,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:21,787 INFO L82 PathProgramCache]: Analyzing trace with hash -224246378, now seen corresponding path program 1 times [2019-10-15 03:31:21,788 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:21,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771656718] [2019-10-15 03:31:21,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:21,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:21,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:21,862 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 03:31:21,862 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771656718] [2019-10-15 03:31:21,863 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:21,863 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:21,863 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728018952] [2019-10-15 03:31:21,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:21,864 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:21,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:21,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:21,864 INFO L87 Difference]: Start difference. First operand 266 states and 439 transitions. Second operand 5 states. [2019-10-15 03:31:22,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:22,045 INFO L93 Difference]: Finished difference Result 531 states and 879 transitions. [2019-10-15 03:31:22,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:22,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2019-10-15 03:31:22,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:22,048 INFO L225 Difference]: With dead ends: 531 [2019-10-15 03:31:22,048 INFO L226 Difference]: Without dead ends: 273 [2019-10-15 03:31:22,049 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 03:31:22,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2019-10-15 03:31:22,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2019-10-15 03:31:22,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2019-10-15 03:31:22,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 442 transitions. [2019-10-15 03:31:22,064 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 442 transitions. Word has length 92 [2019-10-15 03:31:22,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:22,064 INFO L462 AbstractCegarLoop]: Abstraction has 273 states and 442 transitions. [2019-10-15 03:31:22,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:22,064 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 442 transitions. [2019-10-15 03:31:22,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 03:31:22,066 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:22,066 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 03:31:22,066 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:22,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:22,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1778547929, now seen corresponding path program 1 times [2019-10-15 03:31:22,067 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:22,067 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384786091] [2019-10-15 03:31:22,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:22,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:22,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:22,118 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 03:31:22,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384786091] [2019-10-15 03:31:22,119 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:22,119 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:22,119 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430885077] [2019-10-15 03:31:22,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:22,120 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:22,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:22,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:22,121 INFO L87 Difference]: Start difference. First operand 273 states and 442 transitions. Second operand 5 states. [2019-10-15 03:31:22,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:22,403 INFO L93 Difference]: Finished difference Result 567 states and 925 transitions. [2019-10-15 03:31:22,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:22,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2019-10-15 03:31:22,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:22,407 INFO L225 Difference]: With dead ends: 567 [2019-10-15 03:31:22,407 INFO L226 Difference]: Without dead ends: 302 [2019-10-15 03:31:22,408 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 03:31:22,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2019-10-15 03:31:22,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 300. [2019-10-15 03:31:22,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-10-15 03:31:22,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 485 transitions. [2019-10-15 03:31:22,442 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 485 transitions. Word has length 97 [2019-10-15 03:31:22,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:22,444 INFO L462 AbstractCegarLoop]: Abstraction has 300 states and 485 transitions. [2019-10-15 03:31:22,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:22,444 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 485 transitions. [2019-10-15 03:31:22,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 03:31:22,445 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:22,445 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 03:31:22,446 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:22,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:22,446 INFO L82 PathProgramCache]: Analyzing trace with hash -2033767855, now seen corresponding path program 1 times [2019-10-15 03:31:22,446 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:22,447 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941818927] [2019-10-15 03:31:22,448 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:22,448 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:22,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:22,530 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 03:31:22,530 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941818927] [2019-10-15 03:31:22,531 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:22,532 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:22,532 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534236043] [2019-10-15 03:31:22,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:22,533 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:22,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:22,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:22,534 INFO L87 Difference]: Start difference. First operand 300 states and 485 transitions. Second operand 5 states. [2019-10-15 03:31:22,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:22,742 INFO L93 Difference]: Finished difference Result 594 states and 964 transitions. [2019-10-15 03:31:22,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:22,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-10-15 03:31:22,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:22,746 INFO L225 Difference]: With dead ends: 594 [2019-10-15 03:31:22,746 INFO L226 Difference]: Without dead ends: 302 [2019-10-15 03:31:22,747 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 03:31:22,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2019-10-15 03:31:22,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 300. [2019-10-15 03:31:22,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-10-15 03:31:22,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 481 transitions. [2019-10-15 03:31:22,762 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 481 transitions. Word has length 98 [2019-10-15 03:31:22,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:22,762 INFO L462 AbstractCegarLoop]: Abstraction has 300 states and 481 transitions. [2019-10-15 03:31:22,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:22,763 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 481 transitions. [2019-10-15 03:31:22,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-15 03:31:22,764 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:22,764 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 03:31:22,764 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:22,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:22,765 INFO L82 PathProgramCache]: Analyzing trace with hash -750975689, now seen corresponding path program 1 times [2019-10-15 03:31:22,765 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:22,765 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700023452] [2019-10-15 03:31:22,765 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:22,765 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:22,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:22,815 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 03:31:22,816 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700023452] [2019-10-15 03:31:22,816 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:22,816 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:22,816 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019505062] [2019-10-15 03:31:22,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:22,817 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:22,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:22,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:22,818 INFO L87 Difference]: Start difference. First operand 300 states and 481 transitions. Second operand 5 states. [2019-10-15 03:31:23,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:23,018 INFO L93 Difference]: Finished difference Result 625 states and 1010 transitions. [2019-10-15 03:31:23,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:23,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2019-10-15 03:31:23,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:23,022 INFO L225 Difference]: With dead ends: 625 [2019-10-15 03:31:23,022 INFO L226 Difference]: Without dead ends: 333 [2019-10-15 03:31:23,023 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 03:31:23,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2019-10-15 03:31:23,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 325. [2019-10-15 03:31:23,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2019-10-15 03:31:23,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 519 transitions. [2019-10-15 03:31:23,043 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 519 transitions. Word has length 99 [2019-10-15 03:31:23,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:23,044 INFO L462 AbstractCegarLoop]: Abstraction has 325 states and 519 transitions. [2019-10-15 03:31:23,044 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:23,044 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 519 transitions. [2019-10-15 03:31:23,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 03:31:23,046 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:23,046 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 03:31:23,046 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:23,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:23,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1431450009, now seen corresponding path program 1 times [2019-10-15 03:31:23,047 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:23,047 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415991518] [2019-10-15 03:31:23,047 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:23,047 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:23,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:23,131 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 03:31:23,132 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415991518] [2019-10-15 03:31:23,132 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:23,132 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:23,132 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618526501] [2019-10-15 03:31:23,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:23,133 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:23,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:23,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:23,134 INFO L87 Difference]: Start difference. First operand 325 states and 519 transitions. Second operand 5 states. [2019-10-15 03:31:23,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:23,314 INFO L93 Difference]: Finished difference Result 663 states and 1063 transitions. [2019-10-15 03:31:23,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:23,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-10-15 03:31:23,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:23,317 INFO L225 Difference]: With dead ends: 663 [2019-10-15 03:31:23,317 INFO L226 Difference]: Without dead ends: 346 [2019-10-15 03:31:23,318 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 03:31:23,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2019-10-15 03:31:23,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 344. [2019-10-15 03:31:23,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2019-10-15 03:31:23,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 544 transitions. [2019-10-15 03:31:23,335 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 544 transitions. Word has length 100 [2019-10-15 03:31:23,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:23,336 INFO L462 AbstractCegarLoop]: Abstraction has 344 states and 544 transitions. [2019-10-15 03:31:23,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:23,336 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 544 transitions. [2019-10-15 03:31:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 03:31:23,337 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:23,338 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 03:31:23,338 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:23,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:23,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1125547711, now seen corresponding path program 1 times [2019-10-15 03:31:23,339 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:23,339 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574028552] [2019-10-15 03:31:23,339 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:23,339 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:23,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:23,389 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 03:31:23,389 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574028552] [2019-10-15 03:31:23,390 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:23,390 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:23,390 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775311187] [2019-10-15 03:31:23,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:23,391 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:23,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:23,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:23,393 INFO L87 Difference]: Start difference. First operand 344 states and 544 transitions. Second operand 5 states. [2019-10-15 03:31:23,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:23,605 INFO L93 Difference]: Finished difference Result 688 states and 1093 transitions. [2019-10-15 03:31:23,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:23,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-10-15 03:31:23,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:23,609 INFO L225 Difference]: With dead ends: 688 [2019-10-15 03:31:23,610 INFO L226 Difference]: Without dead ends: 352 [2019-10-15 03:31:23,611 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 03:31:23,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2019-10-15 03:31:23,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 344. [2019-10-15 03:31:23,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2019-10-15 03:31:23,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 539 transitions. [2019-10-15 03:31:23,630 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 539 transitions. Word has length 100 [2019-10-15 03:31:23,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:23,630 INFO L462 AbstractCegarLoop]: Abstraction has 344 states and 539 transitions. [2019-10-15 03:31:23,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:23,631 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 539 transitions. [2019-10-15 03:31:23,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-15 03:31:23,633 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:23,634 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 03:31:23,634 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:23,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:23,634 INFO L82 PathProgramCache]: Analyzing trace with hash 726279343, now seen corresponding path program 1 times [2019-10-15 03:31:23,635 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:23,635 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301585080] [2019-10-15 03:31:23,635 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:23,635 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:23,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:23,693 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 03:31:23,693 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301585080] [2019-10-15 03:31:23,694 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:23,694 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:23,694 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535591440] [2019-10-15 03:31:23,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:23,695 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:23,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:23,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:23,696 INFO L87 Difference]: Start difference. First operand 344 states and 539 transitions. Second operand 5 states. [2019-10-15 03:31:23,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:23,972 INFO L93 Difference]: Finished difference Result 682 states and 1072 transitions. [2019-10-15 03:31:23,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:31:23,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2019-10-15 03:31:23,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:23,976 INFO L225 Difference]: With dead ends: 682 [2019-10-15 03:31:23,977 INFO L226 Difference]: Without dead ends: 346 [2019-10-15 03:31:23,979 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 03:31:23,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2019-10-15 03:31:24,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 344. [2019-10-15 03:31:24,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2019-10-15 03:31:24,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 533 transitions. [2019-10-15 03:31:24,008 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 533 transitions. Word has length 101 [2019-10-15 03:31:24,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:24,009 INFO L462 AbstractCegarLoop]: Abstraction has 344 states and 533 transitions. [2019-10-15 03:31:24,009 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:24,009 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 533 transitions. [2019-10-15 03:31:24,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-15 03:31:24,012 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:24,013 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 03:31:24,013 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:24,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:24,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1899162462, now seen corresponding path program 1 times [2019-10-15 03:31:24,014 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:24,015 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56313826] [2019-10-15 03:31:24,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:24,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:24,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:24,152 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 03:31:24,152 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56313826] [2019-10-15 03:31:24,153 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044341340] [2019-10-15 03:31:24,153 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 03:31:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:24,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 03:31:24,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:31:24,332 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 03:31:24,333 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:31:24,357 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:31:24,381 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:31:24,382 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:31:24,408 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:31:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-10-15 03:31:24,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [331233638] [2019-10-15 03:31:24,509 INFO L162 IcfgInterpreter]: Started Sifa with 56 locations of interest [2019-10-15 03:31:24,509 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:31:24,516 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:31:24,526 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:31:24,527 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:31:24,587 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:31:24,600 INFO L199 IcfgInterpreter]: Interpreting procedure ssl3_accept with input of size 3 for LOIs [2019-10-15 03:31:25,738 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2019-10-15 03:31:25,905 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 196 [2019-10-15 03:31:37,788 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:31:37,789 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:31:38,794 WARN L191 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 153 [2019-10-15 03:31:39,556 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 148 [2019-10-15 03:31:40,273 WARN L191 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 148 [2019-10-15 03:31:41,014 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 151 [2019-10-15 03:31:41,889 WARN L191 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 147 [2019-10-15 03:31:42,684 WARN L191 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 150 [2019-10-15 03:31:43,452 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 153 [2019-10-15 03:31:44,236 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 156 [2019-10-15 03:31:45,025 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 147 [2019-10-15 03:31:45,931 WARN L191 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 156 [2019-10-15 03:31:46,750 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 153 [2019-10-15 03:31:47,804 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 158 [2019-10-15 03:31:48,661 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 161 [2019-10-15 03:31:49,547 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 164 [2019-10-15 03:31:50,357 WARN L191 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 148 [2019-10-15 03:31:51,124 WARN L191 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 149 [2019-10-15 03:31:52,241 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 167 [2019-10-15 03:31:53,160 WARN L191 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 170 [2019-10-15 03:31:54,113 WARN L191 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 173