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/eca-rers2012/Problem12_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:50:54,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:50:54,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:50:54,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-15 01:50:54,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:50:54,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:50:54,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:50:54,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:50:54,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:50:54,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:50:54,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:50:54,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:50:54,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:50:54,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:50:54,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:50:54,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:50:54,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:50:54,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:50:54,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:50:54,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:50:54,818 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 01:50:54,853 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:50:54,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:50:54,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:50:54,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:50:54,855 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:50:54,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:50:54,856 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:50:54,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:50:54,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:50:54,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:50:54,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:50:54,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:50:54,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:50:54,860 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:50:54,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:50:54,861 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:50:54,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:50:54,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:50:54,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:50:54,861 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:50:54,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:50:54,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:50:54,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:50:54,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:50:54,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:50:54,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:50:54,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:50:54,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:50:54,864 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 01:50:55,145 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:50:55,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:50:55,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:50:55,171 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:50:55,172 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:50:55,172 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label18.c [2019-10-15 01:50:55,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fcb03daf/2e81fa37fdec4e91b286e87d8bdb9948/FLAGb1ff5e20c [2019-10-15 01:50:56,003 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:50:56,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label18.c [2019-10-15 01:50:56,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fcb03daf/2e81fa37fdec4e91b286e87d8bdb9948/FLAGb1ff5e20c [2019-10-15 01:50:56,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fcb03daf/2e81fa37fdec4e91b286e87d8bdb9948 [2019-10-15 01:50:56,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:50:56,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:50:56,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:50:56,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:50:56,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:50:56,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:50:56" (1/1) ... [2019-10-15 01:50:56,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ed2b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:56, skipping insertion in model container [2019-10-15 01:50:56,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:50:56" (1/1) ... [2019-10-15 01:50:56,120 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:50:56,285 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:50:57,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:50:57,877 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:50:58,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:50:58,529 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:50:58,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:58 WrapperNode [2019-10-15 01:50:58,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:50:58,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:50:58,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:50:58,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:50:58,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:58" (1/1) ... [2019-10-15 01:50:58,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:58" (1/1) ... [2019-10-15 01:50:58,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:58" (1/1) ... [2019-10-15 01:50:58,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:58" (1/1) ... [2019-10-15 01:50:58,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:58" (1/1) ... [2019-10-15 01:50:58,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:58" (1/1) ... [2019-10-15 01:50:58,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:58" (1/1) ... [2019-10-15 01:50:58,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:50:58,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:50:58,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:50:58,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:50:58,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:58" (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 01:50:58,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:50:58,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:50:58,847 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:50:58,847 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-15 01:50:58,847 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-15 01:50:58,847 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-15 01:50:58,847 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:50:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:50:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-15 01:50:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-15 01:50:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-15 01:50:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:50:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:50:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:50:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:50:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:50:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:51:05,196 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:51:05,197 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:51:05,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:51:05 BoogieIcfgContainer [2019-10-15 01:51:05,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:51:05,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:51:05,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:51:05,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:51:05,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:50:56" (1/3) ... [2019-10-15 01:51:05,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e4878f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:51:05, skipping insertion in model container [2019-10-15 01:51:05,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:58" (2/3) ... [2019-10-15 01:51:05,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e4878f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:51:05, skipping insertion in model container [2019-10-15 01:51:05,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:51:05" (3/3) ... [2019-10-15 01:51:05,208 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label18.c [2019-10-15 01:51:05,218 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:51:05,227 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:51:05,239 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:51:05,271 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:51:05,271 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:51:05,271 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:51:05,271 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:51:05,272 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:51:05,272 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:51:05,272 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:51:05,272 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:51:05,305 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states. [2019-10-15 01:51:05,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 01:51:05,310 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:05,311 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:51:05,313 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:05,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:05,319 INFO L82 PathProgramCache]: Analyzing trace with hash -874906546, now seen corresponding path program 1 times [2019-10-15 01:51:05,328 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:05,329 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661734340] [2019-10-15 01:51:05,329 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:05,329 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:05,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:05,626 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 01:51:05,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661734340] [2019-10-15 01:51:05,629 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:51:05,630 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:51:05,630 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808472660] [2019-10-15 01:51:05,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:51:05,635 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:51:05,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:51:05,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:51:05,653 INFO L87 Difference]: Start difference. First operand 694 states. Second operand 3 states. [2019-10-15 01:51:10,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:51:10,329 INFO L93 Difference]: Finished difference Result 2068 states and 4065 transitions. [2019-10-15 01:51:10,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:51:10,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-15 01:51:10,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:51:10,363 INFO L225 Difference]: With dead ends: 2068 [2019-10-15 01:51:10,363 INFO L226 Difference]: Without dead ends: 1371 [2019-10-15 01:51:10,372 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 01:51:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2019-10-15 01:51:10,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1357. [2019-10-15 01:51:10,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1357 states. [2019-10-15 01:51:10,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 2576 transitions. [2019-10-15 01:51:10,511 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 2576 transitions. Word has length 11 [2019-10-15 01:51:10,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:51:10,512 INFO L462 AbstractCegarLoop]: Abstraction has 1357 states and 2576 transitions. [2019-10-15 01:51:10,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:51:10,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 2576 transitions. [2019-10-15 01:51:10,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-15 01:51:10,514 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:10,514 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:51:10,515 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:10,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:10,515 INFO L82 PathProgramCache]: Analyzing trace with hash 835078508, now seen corresponding path program 1 times [2019-10-15 01:51:10,516 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:10,516 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889822724] [2019-10-15 01:51:10,516 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:10,516 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:10,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:51:10,669 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889822724] [2019-10-15 01:51:10,669 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:51:10,669 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:51:10,669 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362616232] [2019-10-15 01:51:10,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:51:10,673 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:51:10,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:51:10,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:51:10,674 INFO L87 Difference]: Start difference. First operand 1357 states and 2576 transitions. Second operand 5 states. [2019-10-15 01:51:16,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:51:16,940 INFO L93 Difference]: Finished difference Result 4103 states and 7818 transitions. [2019-10-15 01:51:16,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:51:16,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-15 01:51:16,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:51:16,963 INFO L225 Difference]: With dead ends: 4103 [2019-10-15 01:51:16,963 INFO L226 Difference]: Without dead ends: 2751 [2019-10-15 01:51:16,968 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:51:16,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2019-10-15 01:51:17,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2739. [2019-10-15 01:51:17,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2739 states. [2019-10-15 01:51:17,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 4960 transitions. [2019-10-15 01:51:17,083 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 4960 transitions. Word has length 25 [2019-10-15 01:51:17,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:51:17,084 INFO L462 AbstractCegarLoop]: Abstraction has 2739 states and 4960 transitions. [2019-10-15 01:51:17,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:51:17,084 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 4960 transitions. [2019-10-15 01:51:17,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-15 01:51:17,086 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:17,087 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:51:17,087 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:17,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:17,088 INFO L82 PathProgramCache]: Analyzing trace with hash 814130888, now seen corresponding path program 1 times [2019-10-15 01:51:17,088 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:17,089 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447186339] [2019-10-15 01:51:17,089 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:17,089 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:17,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:51:17,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447186339] [2019-10-15 01:51:17,230 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:51:17,231 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:51:17,231 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782885369] [2019-10-15 01:51:17,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:51:17,232 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:51:17,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:51:17,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:51:17,233 INFO L87 Difference]: Start difference. First operand 2739 states and 4960 transitions. Second operand 4 states. [2019-10-15 01:51:24,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:51:24,485 INFO L93 Difference]: Finished difference Result 9592 states and 17474 transitions. [2019-10-15 01:51:24,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:51:24,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-10-15 01:51:24,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:51:24,530 INFO L225 Difference]: With dead ends: 9592 [2019-10-15 01:51:24,530 INFO L226 Difference]: Without dead ends: 6858 [2019-10-15 01:51:24,539 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 01:51:24,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6858 states. [2019-10-15 01:51:24,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6858 to 6826. [2019-10-15 01:51:24,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6826 states. [2019-10-15 01:51:24,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 11779 transitions. [2019-10-15 01:51:24,789 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 11779 transitions. Word has length 27 [2019-10-15 01:51:24,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:51:24,790 INFO L462 AbstractCegarLoop]: Abstraction has 6826 states and 11779 transitions. [2019-10-15 01:51:24,790 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:51:24,790 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 11779 transitions. [2019-10-15 01:51:24,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-15 01:51:24,794 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:24,794 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:51:24,795 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:24,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:24,795 INFO L82 PathProgramCache]: Analyzing trace with hash -523306565, now seen corresponding path program 1 times [2019-10-15 01:51:24,795 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:24,796 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736147960] [2019-10-15 01:51:24,796 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:24,796 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:24,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:24,926 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:51:24,926 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736147960] [2019-10-15 01:51:24,926 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:51:24,927 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:51:24,927 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963949464] [2019-10-15 01:51:24,927 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:51:24,928 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:51:24,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:51:24,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:51:24,928 INFO L87 Difference]: Start difference. First operand 6826 states and 11779 transitions. Second operand 6 states. [2019-10-15 01:51:31,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:51:31,131 INFO L93 Difference]: Finished difference Result 16476 states and 28764 transitions. [2019-10-15 01:51:31,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:51:31,132 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2019-10-15 01:51:31,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:51:31,182 INFO L225 Difference]: With dead ends: 16476 [2019-10-15 01:51:31,183 INFO L226 Difference]: Without dead ends: 9655 [2019-10-15 01:51:31,201 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:51:31,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9655 states. [2019-10-15 01:51:31,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9655 to 9603. [2019-10-15 01:51:31,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9603 states. [2019-10-15 01:51:31,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9603 states to 9603 states and 15935 transitions. [2019-10-15 01:51:31,462 INFO L78 Accepts]: Start accepts. Automaton has 9603 states and 15935 transitions. Word has length 54 [2019-10-15 01:51:31,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:51:31,462 INFO L462 AbstractCegarLoop]: Abstraction has 9603 states and 15935 transitions. [2019-10-15 01:51:31,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:51:31,463 INFO L276 IsEmpty]: Start isEmpty. Operand 9603 states and 15935 transitions. [2019-10-15 01:51:31,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-15 01:51:31,468 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:31,469 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-15 01:51:31,469 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:31,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:31,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1074505402, now seen corresponding path program 1 times [2019-10-15 01:51:31,470 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:31,470 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654706819] [2019-10-15 01:51:31,470 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:31,471 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:31,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:51:31,603 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654706819] [2019-10-15 01:51:31,603 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140651702] [2019-10-15 01:51:31,604 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 01:51:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:31,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:51:31,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:51:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:51:31,814 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:51:31,906 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:51:31,906 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:51:31,907 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2019-10-15 01:51:31,907 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229247010] [2019-10-15 01:51:31,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:51:31,908 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:51:31,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:51:31,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:51:31,909 INFO L87 Difference]: Start difference. First operand 9603 states and 15935 transitions. Second operand 5 states.