/usr/bin/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:58:25,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:58:25,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:58:25,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 22:58:25,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:58:25,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:58:25,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:58:25,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:58:25,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:58:25,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:58:25,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:58:25,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:58:25,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:58:25,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:58:25,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:58:25,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:58:25,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:58:25,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:58:25,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:58:25,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:58:25,481 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 [2019-11-06 22:58:25,501 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:58:25,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:58:25,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:58:25,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:58:25,503 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:58:25,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:58:25,503 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:58:25,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:58:25,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:58:25,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:58:25,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:58:25,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:58:25,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:58:25,505 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:58:25,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:58:25,505 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:58:25,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:58:25,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:58:25,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:58:25,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:58:25,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:58:25,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:58:25,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:58:25,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:58:25,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:58:25,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:58:25,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:58:25,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:58:25,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:58:25,763 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:58:25,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:58:25,781 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:58:25,783 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:58:25,783 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:58:25,784 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label51.c [2019-11-06 22:58:25,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fb9da2ea/5195e15dd6014149ad7bacdebb525f86/FLAG5ab61ce97 [2019-11-06 22:58:26,577 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:58:26,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label51.c [2019-11-06 22:58:26,600 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fb9da2ea/5195e15dd6014149ad7bacdebb525f86/FLAG5ab61ce97 [2019-11-06 22:58:26,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fb9da2ea/5195e15dd6014149ad7bacdebb525f86 [2019-11-06 22:58:26,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:58:26,692 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:58:26,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:58:26,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:58:26,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:58:26,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:58:26" (1/1) ... [2019-11-06 22:58:26,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb7612d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:26, skipping insertion in model container [2019-11-06 22:58:26,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:58:26" (1/1) ... [2019-11-06 22:58:26,711 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:58:26,842 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:58:28,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:58:28,384 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:58:28,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:58:28,911 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:58:28,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:28 WrapperNode [2019-11-06 22:58:28,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:58:28,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:58:28,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:58:28,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:58:28,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:28" (1/1) ... [2019-11-06 22:58:28,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:28" (1/1) ... [2019-11-06 22:58:28,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:28" (1/1) ... [2019-11-06 22:58:28,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:28" (1/1) ... [2019-11-06 22:58:29,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:28" (1/1) ... [2019-11-06 22:58:29,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:28" (1/1) ... [2019-11-06 22:58:29,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:28" (1/1) ... [2019-11-06 22:58:29,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:58:29,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:58:29,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:58:29,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:58:29,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:28" (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 [2019-11-06 22:58:29,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:58:29,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:58:29,270 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:58:29,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 22:58:29,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 22:58:29,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:58:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:58:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 22:58:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 22:58:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:58:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:58:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:58:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:58:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:58:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:58:33,110 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:58:33,111 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:58:33,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:33 BoogieIcfgContainer [2019-11-06 22:58:33,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:58:33,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:58:33,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:58:33,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:58:33,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:58:26" (1/3) ... [2019-11-06 22:58:33,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca2eac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:58:33, skipping insertion in model container [2019-11-06 22:58:33,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:28" (2/3) ... [2019-11-06 22:58:33,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca2eac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:58:33, skipping insertion in model container [2019-11-06 22:58:33,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:33" (3/3) ... [2019-11-06 22:58:33,127 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label51.c [2019-11-06 22:58:33,142 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:58:33,152 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:58:33,164 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:58:33,207 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:58:33,208 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:58:33,208 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:58:33,208 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:58:33,208 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:58:33,208 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:58:33,208 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:58:33,208 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:58:33,242 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-11-06 22:58:33,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-11-06 22:58:33,251 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:33,252 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:58:33,254 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:33,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:33,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1085163511, now seen corresponding path program 1 times [2019-11-06 22:58:33,268 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:33,269 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295818852] [2019-11-06 22:58:33,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:33,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:33,657 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295818852] [2019-11-06 22:58:33,658 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:58:33,659 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:58:33,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014331750] [2019-11-06 22:58:33,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:58:33,668 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:33,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:58:33,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:58:33,686 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2019-11-06 22:58:40,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:58:40,826 INFO L93 Difference]: Finished difference Result 2970 states and 5743 transitions. [2019-11-06 22:58:40,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:58:40,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2019-11-06 22:58:40,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:58:40,874 INFO L225 Difference]: With dead ends: 2970 [2019-11-06 22:58:40,874 INFO L226 Difference]: Without dead ends: 2114 [2019-11-06 22:58:40,894 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:58:40,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2019-11-06 22:58:41,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 2114. [2019-11-06 22:58:41,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2019-11-06 22:58:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3320 transitions. [2019-11-06 22:58:41,130 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3320 transitions. Word has length 66 [2019-11-06 22:58:41,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:58:41,133 INFO L462 AbstractCegarLoop]: Abstraction has 2114 states and 3320 transitions. [2019-11-06 22:58:41,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:58:41,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3320 transitions. [2019-11-06 22:58:41,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-11-06 22:58:41,153 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:41,154 INFO L410 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, 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] [2019-11-06 22:58:41,154 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:41,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:41,156 INFO L82 PathProgramCache]: Analyzing trace with hash 340179813, now seen corresponding path program 1 times [2019-11-06 22:58:41,156 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:41,156 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357079710] [2019-11-06 22:58:41,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:41,398 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357079710] [2019-11-06 22:58:41,398 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:58:41,398 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:58:41,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597004169] [2019-11-06 22:58:41,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:58:41,408 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:41,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:58:41,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:58:41,409 INFO L87 Difference]: Start difference. First operand 2114 states and 3320 transitions. Second operand 5 states. [2019-11-06 22:58:47,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:58:47,129 INFO L93 Difference]: Finished difference Result 6436 states and 10244 transitions. [2019-11-06 22:58:47,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:58:47,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2019-11-06 22:58:47,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:58:47,164 INFO L225 Difference]: With dead ends: 6436 [2019-11-06 22:58:47,164 INFO L226 Difference]: Without dead ends: 4328 [2019-11-06 22:58:47,171 INFO L630 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 [2019-11-06 22:58:47,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4328 states. [2019-11-06 22:58:47,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4328 to 4296. [2019-11-06 22:58:47,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4296 states. [2019-11-06 22:58:47,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 6416 transitions. [2019-11-06 22:58:47,316 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 6416 transitions. Word has length 135 [2019-11-06 22:58:47,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:58:47,318 INFO L462 AbstractCegarLoop]: Abstraction has 4296 states and 6416 transitions. [2019-11-06 22:58:47,319 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:58:47,319 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 6416 transitions. [2019-11-06 22:58:47,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-06 22:58:47,328 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:47,329 INFO L410 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:58:47,329 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:47,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:47,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1733405200, now seen corresponding path program 1 times [2019-11-06 22:58:47,331 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:47,331 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508126098] [2019-11-06 22:58:47,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:47,597 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:47,597 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508126098] [2019-11-06 22:58:47,598 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:58:47,598 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:58:47,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073361942] [2019-11-06 22:58:47,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:58:47,601 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:47,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:58:47,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:58:47,602 INFO L87 Difference]: Start difference. First operand 4296 states and 6416 transitions. Second operand 6 states. [2019-11-06 22:58:53,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:58:53,120 INFO L93 Difference]: Finished difference Result 13101 states and 20256 transitions. [2019-11-06 22:58:53,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:58:53,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2019-11-06 22:58:53,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:58:53,183 INFO L225 Difference]: With dead ends: 13101 [2019-11-06 22:58:53,183 INFO L226 Difference]: Without dead ends: 8811 [2019-11-06 22:58:53,200 INFO L630 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 [2019-11-06 22:58:53,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8811 states. [2019-11-06 22:58:53,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8811 to 8751. [2019-11-06 22:58:53,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8751 states. [2019-11-06 22:58:53,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8751 states to 8751 states and 13061 transitions. [2019-11-06 22:58:53,465 INFO L78 Accepts]: Start accepts. Automaton has 8751 states and 13061 transitions. Word has length 162 [2019-11-06 22:58:53,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:58:53,468 INFO L462 AbstractCegarLoop]: Abstraction has 8751 states and 13061 transitions. [2019-11-06 22:58:53,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:58:53,468 INFO L276 IsEmpty]: Start isEmpty. Operand 8751 states and 13061 transitions. [2019-11-06 22:58:53,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-11-06 22:58:53,474 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:53,475 INFO L410 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:58:53,475 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:53,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:53,476 INFO L82 PathProgramCache]: Analyzing trace with hash -762986116, now seen corresponding path program 1 times [2019-11-06 22:58:53,476 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:53,477 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366522890] [2019-11-06 22:58:53,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:53,778 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:53,778 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366522890] [2019-11-06 22:58:53,778 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:58:53,779 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:58:53,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589428871] [2019-11-06 22:58:53,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:58:53,780 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:53,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:58:53,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:58:53,780 INFO L87 Difference]: Start difference. First operand 8751 states and 13061 transitions. Second operand 4 states. [2019-11-06 22:59:00,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:59:00,135 INFO L93 Difference]: Finished difference Result 21753 states and 32327 transitions. [2019-11-06 22:59:00,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:59:00,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2019-11-06 22:59:00,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:59:00,197 INFO L225 Difference]: With dead ends: 21753 [2019-11-06 22:59:00,197 INFO L226 Difference]: Without dead ends: 13008 [2019-11-06 22:59:00,220 INFO L630 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 [2019-11-06 22:59:00,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13008 states. [2019-11-06 22:59:00,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13008 to 13008. [2019-11-06 22:59:00,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13008 states. [2019-11-06 22:59:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13008 states to 13008 states and 17080 transitions. [2019-11-06 22:59:00,537 INFO L78 Accepts]: Start accepts. Automaton has 13008 states and 17080 transitions. Word has length 172 [2019-11-06 22:59:00,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:59:00,540 INFO L462 AbstractCegarLoop]: Abstraction has 13008 states and 17080 transitions. [2019-11-06 22:59:00,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:59:00,540 INFO L276 IsEmpty]: Start isEmpty. Operand 13008 states and 17080 transitions. [2019-11-06 22:59:00,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-11-06 22:59:00,547 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:59:00,548 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:59:00,548 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:59:00,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:59:00,549 INFO L82 PathProgramCache]: Analyzing trace with hash -929813213, now seen corresponding path program 1 times [2019-11-06 22:59:00,549 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:59:00,550 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125757260] [2019-11-06 22:59:00,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:59:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:59:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 118 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-06 22:59:00,886 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125757260] [2019-11-06 22:59:00,887 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774780680] [2019-11-06 22:59:00,887 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 [2019-11-06 22:59:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:59:01,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-06 22:59:01,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:59:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-06 22:59:01,206 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:59:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 118 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-06 22:59:01,361 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:59:01,362 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2019-11-06 22:59:01,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411206903] [2019-11-06 22:59:01,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:59:01,364 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:59:01,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:59:01,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:59:01,365 INFO L87 Difference]: Start difference. First operand 13008 states and 17080 transitions. Second operand 5 states.