/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:57:57,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:57:57,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:57:57,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:57:57,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:57:57,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:57:57,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:57:57,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:57:57,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:57:57,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:57:57,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:57:57,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:57:57,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:57:57,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:57:57,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:57:57,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:57:57,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:57:57,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:57:57,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:57:57,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:57:57,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:57:57,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:57:57,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:57:57,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:57:57,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:57:57,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:57:57,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:57:57,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:57:57,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:57:57,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:57:57,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:57:57,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:57:57,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:57:57,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:57:57,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:57:57,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:57:57,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:57:57,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:57:57,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:57:57,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:57:57,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:57:57,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 21:57:57,298 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:57:57,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:57:57,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:57:57,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:57:57,301 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:57:57,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:57:57,302 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:57:57,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:57:57,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:57:57,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:57:57,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:57:57,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:57:57,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:57:57,303 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:57:57,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:57:57,303 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:57:57,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:57:57,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:57:57,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:57:57,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:57:57,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:57:57,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:57:57,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:57:57,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:57:57,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:57:57,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:57:57,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:57:57,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:57:57,307 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:57:57,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 21:57:57,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:57:57,663 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:57:57,669 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:57:57,670 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:57:57,670 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:57:57,671 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label19.c [2020-08-18 21:57:57,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a360a53bd/0080efa7380e446aacc3ab6dd5d19a1e/FLAGbba511e28 [2020-08-18 21:57:58,279 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:57:58,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label19.c [2020-08-18 21:57:58,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a360a53bd/0080efa7380e446aacc3ab6dd5d19a1e/FLAGbba511e28 [2020-08-18 21:57:58,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a360a53bd/0080efa7380e446aacc3ab6dd5d19a1e [2020-08-18 21:57:58,598 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:57:58,600 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:57:58,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:57:58,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:57:58,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:57:58,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:57:58" (1/1) ... [2020-08-18 21:57:58,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb36d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:57:58, skipping insertion in model container [2020-08-18 21:57:58,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:57:58" (1/1) ... [2020-08-18 21:57:58,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:57:58,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:57:59,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:57:59,172 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:57:59,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:57:59,348 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:57:59,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:57:59 WrapperNode [2020-08-18 21:57:59,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:57:59,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:57:59,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:57:59,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:57:59,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:57:59" (1/1) ... [2020-08-18 21:57:59,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:57:59" (1/1) ... [2020-08-18 21:57:59,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:57:59" (1/1) ... [2020-08-18 21:57:59,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:57:59" (1/1) ... [2020-08-18 21:57:59,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:57:59" (1/1) ... [2020-08-18 21:57:59,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:57:59" (1/1) ... [2020-08-18 21:57:59,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:57:59" (1/1) ... [2020-08-18 21:57:59,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:57:59,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:57:59,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:57:59,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:57:59,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:57:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 21:57:59,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:57:59,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:57:59,537 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-08-18 21:57:59,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:57:59,537 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-08-18 21:57:59,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:57:59,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:57:59,537 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 21:57:59,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:57:59,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:57:59,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:58:00,855 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:58:00,856 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 21:58:00,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:58:00 BoogieIcfgContainer [2020-08-18 21:58:00,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:58:00,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:58:00,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:58:00,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:58:00,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:57:58" (1/3) ... [2020-08-18 21:58:00,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd0d6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:58:00, skipping insertion in model container [2020-08-18 21:58:00,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:57:59" (2/3) ... [2020-08-18 21:58:00,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd0d6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:58:00, skipping insertion in model container [2020-08-18 21:58:00,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:58:00" (3/3) ... [2020-08-18 21:58:00,874 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label19.c [2020-08-18 21:58:00,888 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:58:00,897 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:58:00,912 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:58:00,940 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:58:00,941 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:58:00,941 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:58:00,941 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:58:00,941 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:58:00,941 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:58:00,942 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:58:00,942 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:58:00,966 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2020-08-18 21:58:00,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 21:58:00,979 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:58:00,980 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:58:00,981 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:58:00,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:58:00,988 INFO L82 PathProgramCache]: Analyzing trace with hash 797442718, now seen corresponding path program 1 times [2020-08-18 21:58:00,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:58:00,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689456013] [2020-08-18 21:58:00,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:58:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:01,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:58:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:58:01,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689456013] [2020-08-18 21:58:01,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:58:01,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:58:01,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025954978] [2020-08-18 21:58:01,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:58:01,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:58:01,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:58:01,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:58:01,678 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 5 states. [2020-08-18 21:58:03,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:58:03,405 INFO L93 Difference]: Finished difference Result 627 states and 1073 transitions. [2020-08-18 21:58:03,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:58:03,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-08-18 21:58:03,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:58:03,440 INFO L225 Difference]: With dead ends: 627 [2020-08-18 21:58:03,441 INFO L226 Difference]: Without dead ends: 327 [2020-08-18 21:58:03,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:58:03,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-18 21:58:03,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 319. [2020-08-18 21:58:03,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-08-18 21:58:03,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 480 transitions. [2020-08-18 21:58:03,533 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 480 transitions. Word has length 98 [2020-08-18 21:58:03,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:58:03,534 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 480 transitions. [2020-08-18 21:58:03,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:58:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 480 transitions. [2020-08-18 21:58:03,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-18 21:58:03,541 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:58:03,541 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:58:03,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:58:03,542 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:58:03,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:58:03,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1720377347, now seen corresponding path program 1 times [2020-08-18 21:58:03,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:58:03,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105171871] [2020-08-18 21:58:03,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:58:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:03,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:58:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:03,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-18 21:58:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:58:03,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105171871] [2020-08-18 21:58:03,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:58:03,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 21:58:03,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438783843] [2020-08-18 21:58:03,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:58:03,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:58:03,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:58:03,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:58:03,777 INFO L87 Difference]: Start difference. First operand 319 states and 480 transitions. Second operand 8 states. [2020-08-18 21:58:04,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:58:04,724 INFO L93 Difference]: Finished difference Result 635 states and 968 transitions. [2020-08-18 21:58:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 21:58:04,724 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-08-18 21:58:04,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:58:04,728 INFO L225 Difference]: With dead ends: 635 [2020-08-18 21:58:04,728 INFO L226 Difference]: Without dead ends: 322 [2020-08-18 21:58:04,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:58:04,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-08-18 21:58:04,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 310. [2020-08-18 21:58:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-08-18 21:58:04,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 437 transitions. [2020-08-18 21:58:04,758 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 437 transitions. Word has length 113 [2020-08-18 21:58:04,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:58:04,759 INFO L479 AbstractCegarLoop]: Abstraction has 310 states and 437 transitions. [2020-08-18 21:58:04,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:58:04,759 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 437 transitions. [2020-08-18 21:58:04,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-18 21:58:04,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:58:04,764 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:58:04,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:58:04,765 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:58:04,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:58:04,765 INFO L82 PathProgramCache]: Analyzing trace with hash -540211274, now seen corresponding path program 1 times [2020-08-18 21:58:04,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:58:04,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225235830] [2020-08-18 21:58:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:58:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:04,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:58:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:04,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-18 21:58:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:04,971 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:58:04,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225235830] [2020-08-18 21:58:04,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:58:04,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 21:58:04,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838544676] [2020-08-18 21:58:04,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:58:04,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:58:04,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:58:04,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:58:04,976 INFO L87 Difference]: Start difference. First operand 310 states and 437 transitions. Second operand 8 states. [2020-08-18 21:58:06,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:58:06,836 INFO L93 Difference]: Finished difference Result 1088 states and 1576 transitions. [2020-08-18 21:58:06,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:58:06,838 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-08-18 21:58:06,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:58:06,844 INFO L225 Difference]: With dead ends: 1088 [2020-08-18 21:58:06,845 INFO L226 Difference]: Without dead ends: 784 [2020-08-18 21:58:06,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:58:06,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-08-18 21:58:06,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 612. [2020-08-18 21:58:06,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2020-08-18 21:58:06,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 841 transitions. [2020-08-18 21:58:06,913 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 841 transitions. Word has length 120 [2020-08-18 21:58:06,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:58:06,913 INFO L479 AbstractCegarLoop]: Abstraction has 612 states and 841 transitions. [2020-08-18 21:58:06,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:58:06,914 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 841 transitions. [2020-08-18 21:58:06,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-18 21:58:06,921 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:58:06,921 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:58:06,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:58:06,922 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:58:06,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:58:06,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1255105582, now seen corresponding path program 1 times [2020-08-18 21:58:06,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:58:06,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853839376] [2020-08-18 21:58:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:58:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:07,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:58:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:07,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-18 21:58:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:07,264 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:58:07,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853839376] [2020-08-18 21:58:07,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:58:07,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 21:58:07,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062731726] [2020-08-18 21:58:07,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 21:58:07,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:58:07,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 21:58:07,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:58:07,271 INFO L87 Difference]: Start difference. First operand 612 states and 841 transitions. Second operand 6 states. [2020-08-18 21:58:08,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:58:08,606 INFO L93 Difference]: Finished difference Result 1317 states and 1854 transitions. [2020-08-18 21:58:08,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 21:58:08,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-08-18 21:58:08,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:58:08,613 INFO L225 Difference]: With dead ends: 1317 [2020-08-18 21:58:08,614 INFO L226 Difference]: Without dead ends: 625 [2020-08-18 21:58:08,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:58:08,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2020-08-18 21:58:08,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 612. [2020-08-18 21:58:08,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2020-08-18 21:58:08,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 825 transitions. [2020-08-18 21:58:08,660 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 825 transitions. Word has length 124 [2020-08-18 21:58:08,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:58:08,662 INFO L479 AbstractCegarLoop]: Abstraction has 612 states and 825 transitions. [2020-08-18 21:58:08,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 21:58:08,663 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 825 transitions. [2020-08-18 21:58:08,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-18 21:58:08,669 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:58:08,669 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:58:08,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:58:08,670 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:58:08,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:58:08,671 INFO L82 PathProgramCache]: Analyzing trace with hash -569982810, now seen corresponding path program 1 times [2020-08-18 21:58:08,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:58:08,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201143547] [2020-08-18 21:58:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:58:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:08,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:58:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:08,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-18 21:58:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:58:08,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201143547] [2020-08-18 21:58:08,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:58:08,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 21:58:08,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538767679] [2020-08-18 21:58:08,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:58:08,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:58:08,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:58:08,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:58:08,874 INFO L87 Difference]: Start difference. First operand 612 states and 825 transitions. Second operand 8 states. [2020-08-18 21:58:10,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:58:10,657 INFO L93 Difference]: Finished difference Result 2151 states and 3020 transitions. [2020-08-18 21:58:10,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 21:58:10,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2020-08-18 21:58:10,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:58:10,669 INFO L225 Difference]: With dead ends: 2151 [2020-08-18 21:58:10,669 INFO L226 Difference]: Without dead ends: 1545 [2020-08-18 21:58:10,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-08-18 21:58:10,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2020-08-18 21:58:10,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1381. [2020-08-18 21:58:10,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1381 states. [2020-08-18 21:58:10,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1813 transitions. [2020-08-18 21:58:10,741 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1813 transitions. Word has length 128 [2020-08-18 21:58:10,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:58:10,741 INFO L479 AbstractCegarLoop]: Abstraction has 1381 states and 1813 transitions. [2020-08-18 21:58:10,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:58:10,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1813 transitions. [2020-08-18 21:58:10,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-18 21:58:10,747 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:58:10,747 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:58:10,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:58:10,749 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:58:10,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:58:10,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1133595058, now seen corresponding path program 1 times [2020-08-18 21:58:10,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:58:10,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458147498] [2020-08-18 21:58:10,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:58:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:10,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:58:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:10,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-18 21:58:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:10,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:58:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:10,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 21:58:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-18 21:58:10,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458147498] [2020-08-18 21:58:10,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:58:10,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 21:58:10,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517457920] [2020-08-18 21:58:10,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:58:10,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:58:10,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:58:10,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:58:10,998 INFO L87 Difference]: Start difference. First operand 1381 states and 1813 transitions. Second operand 9 states. [2020-08-18 21:58:13,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:58:13,182 INFO L93 Difference]: Finished difference Result 3221 states and 4262 transitions. [2020-08-18 21:58:13,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 21:58:13,183 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 145 [2020-08-18 21:58:13,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:58:13,196 INFO L225 Difference]: With dead ends: 3221 [2020-08-18 21:58:13,196 INFO L226 Difference]: Without dead ends: 1846 [2020-08-18 21:58:13,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:58:13,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2020-08-18 21:58:13,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1689. [2020-08-18 21:58:13,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2020-08-18 21:58:13,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2175 transitions. [2020-08-18 21:58:13,269 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2175 transitions. Word has length 145 [2020-08-18 21:58:13,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:58:13,269 INFO L479 AbstractCegarLoop]: Abstraction has 1689 states and 2175 transitions. [2020-08-18 21:58:13,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:58:13,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2175 transitions. [2020-08-18 21:58:13,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 21:58:13,276 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:58:13,276 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:58:13,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:58:13,277 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:58:13,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:58:13,277 INFO L82 PathProgramCache]: Analyzing trace with hash -377804758, now seen corresponding path program 1 times [2020-08-18 21:58:13,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:58:13,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811152864] [2020-08-18 21:58:13,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:58:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:13,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:58:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:13,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-18 21:58:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:13,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 21:58:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:13,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 21:58:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:13,516 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 51 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 21:58:13,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811152864] [2020-08-18 21:58:13,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:58:13,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 21:58:13,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702954484] [2020-08-18 21:58:13,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:58:13,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:58:13,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:58:13,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:58:13,520 INFO L87 Difference]: Start difference. First operand 1689 states and 2175 transitions. Second operand 8 states. [2020-08-18 21:58:15,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:58:15,565 INFO L93 Difference]: Finished difference Result 3745 states and 5141 transitions. [2020-08-18 21:58:15,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:58:15,566 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-08-18 21:58:15,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:58:15,581 INFO L225 Difference]: With dead ends: 3745 [2020-08-18 21:58:15,581 INFO L226 Difference]: Without dead ends: 2062 [2020-08-18 21:58:15,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:58:15,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2020-08-18 21:58:15,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 1999. [2020-08-18 21:58:15,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1999 states. [2020-08-18 21:58:15,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 2509 transitions. [2020-08-18 21:58:15,660 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 2509 transitions. Word has length 149 [2020-08-18 21:58:15,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:58:15,661 INFO L479 AbstractCegarLoop]: Abstraction has 1999 states and 2509 transitions. [2020-08-18 21:58:15,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:58:15,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 2509 transitions. [2020-08-18 21:58:15,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-18 21:58:15,667 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:58:15,668 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:58:15,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:58:15,668 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:58:15,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:58:15,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1040485852, now seen corresponding path program 1 times [2020-08-18 21:58:15,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:58:15,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21855793] [2020-08-18 21:58:15,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:58:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:15,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:58:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:15,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-18 21:58:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:15,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 21:58:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:15,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:58:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:58:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 57 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-08-18 21:58:15,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21855793] [2020-08-18 21:58:15,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:58:15,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 21:58:15,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988736434] [2020-08-18 21:58:15,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:58:15,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:58:15,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:58:15,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:58:15,836 INFO L87 Difference]: Start difference. First operand 1999 states and 2509 transitions. Second operand 7 states. [2020-08-18 21:58:17,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:58:17,833 INFO L93 Difference]: Finished difference Result 6107 states and 8119 transitions. [2020-08-18 21:58:17,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 21:58:17,835 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-08-18 21:58:17,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:58:17,836 INFO L225 Difference]: With dead ends: 6107 [2020-08-18 21:58:17,836 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 21:58:17,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:58:17,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 21:58:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 21:58:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 21:58:17,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 21:58:17,854 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 157 [2020-08-18 21:58:17,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:58:17,855 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 21:58:17,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:58:17,855 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 21:58:17,855 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 21:58:17,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:58:17,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 21:58:18,622 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 145 [2020-08-18 21:58:18,876 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 145 [2020-08-18 21:58:19,564 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 52 [2020-08-18 21:58:20,007 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 39 [2020-08-18 21:58:20,417 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 39 [2020-08-18 21:58:20,421 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 21:58:20,421 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~a28~0 |old(~a28~0)|) (= ~a17~0 |old(~a17~0)|) (= ~a21~0 |old(~a21~0)|) (= ~c~0 |old(~c~0)|) (= ~a25~0 |old(~a25~0)|) (= ~z~0 |old(~z~0)|) (= ~f~0 |old(~f~0)|) (= ~a19~0 |old(~a19~0)|) (= ~a11~0 |old(~a11~0)|) (= ~w~0 |old(~w~0)|) (= ~a~0 |old(~a~0)|) (= ~u~0 |old(~u~0)|) (= ~e~0 |old(~e~0)|) (= ~x~0 |old(~x~0)|) (= ~d~0 |old(~d~0)|) (= ~y~0 |old(~y~0)|) (= ~v~0 |old(~v~0)|)) [2020-08-18 21:58:20,422 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 21:58:20,422 INFO L268 CegarLoopResult]: For program point L564-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,422 INFO L268 CegarLoopResult]: For program point L531-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,422 INFO L268 CegarLoopResult]: For program point L498-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,422 INFO L268 CegarLoopResult]: For program point L465-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,423 INFO L268 CegarLoopResult]: For program point L432-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,423 INFO L268 CegarLoopResult]: For program point L234(lines 234 413) no Hoare annotation was computed. [2020-08-18 21:58:20,423 INFO L268 CegarLoopResult]: For program point L69(lines 69 413) no Hoare annotation was computed. [2020-08-18 21:58:20,423 INFO L268 CegarLoopResult]: For program point L565(line 565) no Hoare annotation was computed. [2020-08-18 21:58:20,424 INFO L268 CegarLoopResult]: For program point L532(line 532) no Hoare annotation was computed. [2020-08-18 21:58:20,424 INFO L268 CegarLoopResult]: For program point L499(line 499) no Hoare annotation was computed. [2020-08-18 21:58:20,424 INFO L268 CegarLoopResult]: For program point L466(line 466) no Hoare annotation was computed. [2020-08-18 21:58:20,424 INFO L268 CegarLoopResult]: For program point L433(line 433) no Hoare annotation was computed. [2020-08-18 21:58:20,424 INFO L268 CegarLoopResult]: For program point L202(lines 202 413) no Hoare annotation was computed. [2020-08-18 21:58:20,425 INFO L268 CegarLoopResult]: For program point L169(lines 169 413) no Hoare annotation was computed. [2020-08-18 21:58:20,425 INFO L268 CegarLoopResult]: For program point L368(lines 368 413) no Hoare annotation was computed. [2020-08-18 21:58:20,425 INFO L268 CegarLoopResult]: For program point L203(lines 203 210) no Hoare annotation was computed. [2020-08-18 21:58:20,425 INFO L268 CegarLoopResult]: For program point L203-2(lines 203 210) no Hoare annotation was computed. [2020-08-18 21:58:20,425 INFO L268 CegarLoopResult]: For program point L38(lines 38 413) no Hoare annotation was computed. [2020-08-18 21:58:20,425 INFO L268 CegarLoopResult]: For program point L567-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,426 INFO L268 CegarLoopResult]: For program point L534-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,426 INFO L268 CegarLoopResult]: For program point L501-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,426 INFO L268 CegarLoopResult]: For program point L468-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,426 INFO L268 CegarLoopResult]: For program point L402(lines 402 413) no Hoare annotation was computed. [2020-08-18 21:58:20,426 INFO L268 CegarLoopResult]: For program point L435-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,426 INFO L268 CegarLoopResult]: For program point L237(lines 237 413) no Hoare annotation was computed. [2020-08-18 21:58:20,426 INFO L268 CegarLoopResult]: For program point L568(line 568) no Hoare annotation was computed. [2020-08-18 21:58:20,426 INFO L268 CegarLoopResult]: For program point L535(line 535) no Hoare annotation was computed. [2020-08-18 21:58:20,427 INFO L268 CegarLoopResult]: For program point L502(line 502) no Hoare annotation was computed. [2020-08-18 21:58:20,427 INFO L268 CegarLoopResult]: For program point L469(line 469) no Hoare annotation was computed. [2020-08-18 21:58:20,427 INFO L268 CegarLoopResult]: For program point L436(line 436) no Hoare annotation was computed. [2020-08-18 21:58:20,427 INFO L268 CegarLoopResult]: For program point L337(lines 337 413) no Hoare annotation was computed. [2020-08-18 21:58:20,427 INFO L268 CegarLoopResult]: For program point L238(lines 238 246) no Hoare annotation was computed. [2020-08-18 21:58:20,427 INFO L268 CegarLoopResult]: For program point L238-2(lines 238 246) no Hoare annotation was computed. [2020-08-18 21:58:20,427 INFO L268 CegarLoopResult]: For program point L139(lines 139 413) no Hoare annotation was computed. [2020-08-18 21:58:20,427 INFO L268 CegarLoopResult]: For program point L106(lines 106 413) no Hoare annotation was computed. [2020-08-18 21:58:20,428 INFO L268 CegarLoopResult]: For program point L404(lines 404 413) no Hoare annotation was computed. [2020-08-18 21:58:20,428 INFO L268 CegarLoopResult]: For program point L338(lines 338 347) no Hoare annotation was computed. [2020-08-18 21:58:20,428 INFO L268 CegarLoopResult]: For program point L338-2(lines 338 347) no Hoare annotation was computed. [2020-08-18 21:58:20,428 INFO L268 CegarLoopResult]: For program point L74(lines 74 413) no Hoare annotation was computed. [2020-08-18 21:58:20,428 INFO L268 CegarLoopResult]: For program point L570-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,428 INFO L268 CegarLoopResult]: For program point L537-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,428 INFO L268 CegarLoopResult]: For program point L504-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,428 INFO L268 CegarLoopResult]: For program point L471-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,429 INFO L268 CegarLoopResult]: For program point L438-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,429 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 448) no Hoare annotation was computed. [2020-08-18 21:58:20,429 INFO L268 CegarLoopResult]: For program point L75(lines 75 80) no Hoare annotation was computed. [2020-08-18 21:58:20,429 INFO L268 CegarLoopResult]: For program point L42(lines 42 413) no Hoare annotation was computed. [2020-08-18 21:58:20,429 INFO L268 CegarLoopResult]: For program point L75-2(lines 75 80) no Hoare annotation was computed. [2020-08-18 21:58:20,429 INFO L268 CegarLoopResult]: For program point L571(line 571) no Hoare annotation was computed. [2020-08-18 21:58:20,430 INFO L268 CegarLoopResult]: For program point L538(line 538) no Hoare annotation was computed. [2020-08-18 21:58:20,430 INFO L268 CegarLoopResult]: For program point L505(line 505) no Hoare annotation was computed. [2020-08-18 21:58:20,430 INFO L268 CegarLoopResult]: For program point L472(line 472) no Hoare annotation was computed. [2020-08-18 21:58:20,430 INFO L268 CegarLoopResult]: For program point L439(line 439) no Hoare annotation was computed. [2020-08-18 21:58:20,430 INFO L268 CegarLoopResult]: For program point L175(lines 175 413) no Hoare annotation was computed. [2020-08-18 21:58:20,430 INFO L268 CegarLoopResult]: For program point L407(lines 407 413) no Hoare annotation was computed. [2020-08-18 21:58:20,430 INFO L268 CegarLoopResult]: For program point L143(lines 143 413) no Hoare annotation was computed. [2020-08-18 21:58:20,431 INFO L268 CegarLoopResult]: For program point L573-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,431 INFO L268 CegarLoopResult]: For program point L540-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,431 INFO L268 CegarLoopResult]: For program point L507-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,431 INFO L268 CegarLoopResult]: For program point L474-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,431 INFO L268 CegarLoopResult]: For program point L441-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,431 INFO L268 CegarLoopResult]: For program point L375(lines 375 413) no Hoare annotation was computed. [2020-08-18 21:58:20,431 INFO L268 CegarLoopResult]: For program point L309(lines 309 413) no Hoare annotation was computed. [2020-08-18 21:58:20,431 INFO L268 CegarLoopResult]: For program point L276(lines 276 413) no Hoare annotation was computed. [2020-08-18 21:58:20,432 INFO L268 CegarLoopResult]: For program point L574(line 574) no Hoare annotation was computed. [2020-08-18 21:58:20,432 INFO L268 CegarLoopResult]: For program point L541(line 541) no Hoare annotation was computed. [2020-08-18 21:58:20,432 INFO L268 CegarLoopResult]: For program point L508(line 508) no Hoare annotation was computed. [2020-08-18 21:58:20,432 INFO L268 CegarLoopResult]: For program point L475(line 475) no Hoare annotation was computed. [2020-08-18 21:58:20,432 INFO L268 CegarLoopResult]: For program point L442(line 442) no Hoare annotation was computed. [2020-08-18 21:58:20,432 INFO L268 CegarLoopResult]: For program point L409(lines 409 413) no Hoare annotation was computed. [2020-08-18 21:58:20,432 INFO L268 CegarLoopResult]: For program point L212(lines 212 413) no Hoare annotation was computed. [2020-08-18 21:58:20,432 INFO L268 CegarLoopResult]: For program point L179(lines 179 413) no Hoare annotation was computed. [2020-08-18 21:58:20,433 INFO L268 CegarLoopResult]: For program point L113(lines 113 413) no Hoare annotation was computed. [2020-08-18 21:58:20,433 INFO L268 CegarLoopResult]: For program point L47(lines 47 413) no Hoare annotation was computed. [2020-08-18 21:58:20,433 INFO L268 CegarLoopResult]: For program point L576-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,433 INFO L268 CegarLoopResult]: For program point L543-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,433 INFO L268 CegarLoopResult]: For program point L510-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,433 INFO L268 CegarLoopResult]: For program point L477-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,433 INFO L268 CegarLoopResult]: For program point L444-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,434 INFO L268 CegarLoopResult]: For program point L378(lines 378 413) no Hoare annotation was computed. [2020-08-18 21:58:20,434 INFO L268 CegarLoopResult]: For program point L577(line 577) no Hoare annotation was computed. [2020-08-18 21:58:20,434 INFO L268 CegarLoopResult]: For program point L544(line 544) no Hoare annotation was computed. [2020-08-18 21:58:20,434 INFO L268 CegarLoopResult]: For program point L511(line 511) no Hoare annotation was computed. [2020-08-18 21:58:20,434 INFO L268 CegarLoopResult]: For program point L478(line 478) no Hoare annotation was computed. [2020-08-18 21:58:20,434 INFO L268 CegarLoopResult]: For program point L445(line 445) no Hoare annotation was computed. [2020-08-18 21:58:20,434 INFO L268 CegarLoopResult]: For program point L280(lines 280 413) no Hoare annotation was computed. [2020-08-18 21:58:20,435 INFO L268 CegarLoopResult]: For program point L148(lines 148 413) no Hoare annotation was computed. [2020-08-18 21:58:20,435 INFO L268 CegarLoopResult]: For program point L82(lines 82 413) no Hoare annotation was computed. [2020-08-18 21:58:20,435 INFO L268 CegarLoopResult]: For program point L380(lines 380 413) no Hoare annotation was computed. [2020-08-18 21:58:20,435 INFO L268 CegarLoopResult]: For program point L314(lines 314 413) no Hoare annotation was computed. [2020-08-18 21:58:20,435 INFO L268 CegarLoopResult]: For program point L248(lines 248 413) no Hoare annotation was computed. [2020-08-18 21:58:20,435 INFO L268 CegarLoopResult]: For program point L215(lines 215 413) no Hoare annotation was computed. [2020-08-18 21:58:20,435 INFO L268 CegarLoopResult]: For program point L83(lines 83 89) no Hoare annotation was computed. [2020-08-18 21:58:20,435 INFO L268 CegarLoopResult]: For program point L50(lines 50 413) no Hoare annotation was computed. [2020-08-18 21:58:20,435 INFO L268 CegarLoopResult]: For program point L83-2(lines 83 89) no Hoare annotation was computed. [2020-08-18 21:58:20,435 INFO L268 CegarLoopResult]: For program point L579-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,435 INFO L268 CegarLoopResult]: For program point L546-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,436 INFO L268 CegarLoopResult]: For program point L513-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,436 INFO L268 CegarLoopResult]: For program point L480-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,436 INFO L268 CegarLoopResult]: For program point L414(lines 414 416) no Hoare annotation was computed. [2020-08-18 21:58:20,436 INFO L268 CegarLoopResult]: For program point L447-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,436 INFO L268 CegarLoopResult]: For program point L381(lines 381 387) no Hoare annotation was computed. [2020-08-18 21:58:20,436 INFO L268 CegarLoopResult]: For program point L414-2(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,436 INFO L268 CegarLoopResult]: For program point L315(lines 315 326) no Hoare annotation was computed. [2020-08-18 21:58:20,436 INFO L268 CegarLoopResult]: For program point L381-2(lines 381 387) no Hoare annotation was computed. [2020-08-18 21:58:20,436 INFO L268 CegarLoopResult]: For program point L315-2(lines 315 326) no Hoare annotation was computed. [2020-08-18 21:58:20,436 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,436 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,436 INFO L268 CegarLoopResult]: For program point L580(line 580) no Hoare annotation was computed. [2020-08-18 21:58:20,437 INFO L268 CegarLoopResult]: For program point L547(line 547) no Hoare annotation was computed. [2020-08-18 21:58:20,437 INFO L268 CegarLoopResult]: For program point L514(line 514) no Hoare annotation was computed. [2020-08-18 21:58:20,437 INFO L268 CegarLoopResult]: For program point L481(line 481) no Hoare annotation was computed. [2020-08-18 21:58:20,437 INFO L268 CegarLoopResult]: For program point L448(line 448) no Hoare annotation was computed. [2020-08-18 21:58:20,437 INFO L268 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-08-18 21:58:20,437 INFO L268 CegarLoopResult]: For program point L349(lines 349 413) no Hoare annotation was computed. [2020-08-18 21:58:20,437 INFO L268 CegarLoopResult]: For program point L283(lines 283 413) no Hoare annotation was computed. [2020-08-18 21:58:20,437 INFO L268 CegarLoopResult]: For program point L218(lines 218 413) no Hoare annotation was computed. [2020-08-18 21:58:20,437 INFO L268 CegarLoopResult]: For program point L185(lines 185 413) no Hoare annotation was computed. [2020-08-18 21:58:20,437 INFO L268 CegarLoopResult]: For program point L119(lines 119 413) no Hoare annotation was computed. [2020-08-18 21:58:20,438 INFO L268 CegarLoopResult]: For program point L582-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,438 INFO L268 CegarLoopResult]: For program point L549-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,438 INFO L268 CegarLoopResult]: For program point L516-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,438 INFO L268 CegarLoopResult]: For program point L483-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,438 INFO L268 CegarLoopResult]: For program point L450-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,438 INFO L268 CegarLoopResult]: For program point L417-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,438 INFO L268 CegarLoopResult]: For program point L54(lines 54 413) no Hoare annotation was computed. [2020-08-18 21:58:20,438 INFO L268 CegarLoopResult]: For program point L583(line 583) no Hoare annotation was computed. [2020-08-18 21:58:20,439 INFO L268 CegarLoopResult]: For program point L550(line 550) no Hoare annotation was computed. [2020-08-18 21:58:20,439 INFO L268 CegarLoopResult]: For program point L517(line 517) no Hoare annotation was computed. [2020-08-18 21:58:20,439 INFO L268 CegarLoopResult]: For program point L484(line 484) no Hoare annotation was computed. [2020-08-18 21:58:20,439 INFO L268 CegarLoopResult]: For program point L451(line 451) no Hoare annotation was computed. [2020-08-18 21:58:20,439 INFO L268 CegarLoopResult]: For program point L418(line 418) no Hoare annotation was computed. [2020-08-18 21:58:20,439 INFO L268 CegarLoopResult]: For program point L286(lines 286 413) no Hoare annotation was computed. [2020-08-18 21:58:20,439 INFO L268 CegarLoopResult]: For program point L253(lines 253 413) no Hoare annotation was computed. [2020-08-18 21:58:20,439 INFO L268 CegarLoopResult]: For program point L187(lines 187 413) no Hoare annotation was computed. [2020-08-18 21:58:20,439 INFO L268 CegarLoopResult]: For program point L154(lines 154 413) no Hoare annotation was computed. [2020-08-18 21:58:20,440 INFO L268 CegarLoopResult]: For program point L585-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,440 INFO L268 CegarLoopResult]: For program point L552-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,440 INFO L268 CegarLoopResult]: For program point L519-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,440 INFO L268 CegarLoopResult]: For program point L486-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,440 INFO L268 CegarLoopResult]: For program point L453-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,440 INFO L268 CegarLoopResult]: For program point L420-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,440 INFO L268 CegarLoopResult]: For program point L354(lines 354 413) no Hoare annotation was computed. [2020-08-18 21:58:20,440 INFO L268 CegarLoopResult]: For program point L189(lines 189 413) no Hoare annotation was computed. [2020-08-18 21:58:20,440 INFO L268 CegarLoopResult]: For program point L123(lines 123 413) no Hoare annotation was computed. [2020-08-18 21:58:20,440 INFO L268 CegarLoopResult]: For program point L586(line 586) no Hoare annotation was computed. [2020-08-18 21:58:20,441 INFO L268 CegarLoopResult]: For program point L553(line 553) no Hoare annotation was computed. [2020-08-18 21:58:20,441 INFO L268 CegarLoopResult]: For program point L520(line 520) no Hoare annotation was computed. [2020-08-18 21:58:20,441 INFO L268 CegarLoopResult]: For program point L487(line 487) no Hoare annotation was computed. [2020-08-18 21:58:20,441 INFO L268 CegarLoopResult]: For program point L454(line 454) no Hoare annotation was computed. [2020-08-18 21:58:20,441 INFO L268 CegarLoopResult]: For program point L421(line 421) no Hoare annotation was computed. [2020-08-18 21:58:20,441 INFO L268 CegarLoopResult]: For program point L223(lines 223 413) no Hoare annotation was computed. [2020-08-18 21:58:20,441 INFO L268 CegarLoopResult]: For program point L91(lines 91 413) no Hoare annotation was computed. [2020-08-18 21:58:20,441 INFO L268 CegarLoopResult]: For program point L389(lines 389 413) no Hoare annotation was computed. [2020-08-18 21:58:20,442 INFO L268 CegarLoopResult]: For program point L191(lines 191 413) no Hoare annotation was computed. [2020-08-18 21:58:20,442 INFO L268 CegarLoopResult]: For program point L59(lines 59 413) no Hoare annotation was computed. [2020-08-18 21:58:20,442 INFO L268 CegarLoopResult]: For program point L588-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,442 INFO L268 CegarLoopResult]: For program point L555-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,442 INFO L268 CegarLoopResult]: For program point L522-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,442 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 29 598) the Hoare annotation is: (let ((.cse5 (= ~a28~0 |old(~a28~0)|)) (.cse3 (= ~a11~0 |old(~a11~0)|)) (.cse6 (= ~a25~0 |old(~a25~0)|)) (.cse4 (= ~a19~0 |old(~a19~0)|))) (let ((.cse1 (and .cse5 (= ~a17~0 |old(~a17~0)|) .cse3 .cse6 .cse4)) (.cse0 (not (<= |old(~a17~0)| 8))) (.cse2 (not (= ~a21~0 1)))) (and (or (= |old(~a19~0)| 1) .cse0 .cse1 .cse2) (or (and (= 7 ~a17~0) .cse3 (= 7 ~a28~0) (= ~a25~0 1) .cse4) (not (= |old(~a25~0)| 1)) (not (= 7 |old(~a17~0)|)) .cse2 (not (= 7 |old(~a28~0)|)) (not (= |old(~a11~0)| 1))) (or (= 8 |old(~a28~0)|) .cse0 .cse1 (not (<= |old(~a25~0)| 0)) .cse2) (or .cse0 (not (<= 8 |old(~a17~0)|)) .cse2 (and .cse5 .cse3 .cse6 (<= 8 ~a17~0) (<= ~a17~0 8) .cse4))))) [2020-08-18 21:58:20,443 INFO L268 CegarLoopResult]: For program point L489-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,443 INFO L268 CegarLoopResult]: For program point L456-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,443 INFO L268 CegarLoopResult]: For program point L423-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,443 INFO L268 CegarLoopResult]: For program point L291(lines 291 413) no Hoare annotation was computed. [2020-08-18 21:58:20,443 INFO L268 CegarLoopResult]: For program point L225(lines 225 413) no Hoare annotation was computed. [2020-08-18 21:58:20,443 INFO L268 CegarLoopResult]: For program point L159(lines 159 413) no Hoare annotation was computed. [2020-08-18 21:58:20,443 INFO L268 CegarLoopResult]: For program point L589(line 589) no Hoare annotation was computed. [2020-08-18 21:58:20,444 INFO L268 CegarLoopResult]: For program point L556(line 556) no Hoare annotation was computed. [2020-08-18 21:58:20,444 INFO L268 CegarLoopResult]: For program point L523(line 523) no Hoare annotation was computed. [2020-08-18 21:58:20,444 INFO L268 CegarLoopResult]: For program point L490(line 490) no Hoare annotation was computed. [2020-08-18 21:58:20,444 INFO L268 CegarLoopResult]: For program point L457(line 457) no Hoare annotation was computed. [2020-08-18 21:58:20,444 INFO L268 CegarLoopResult]: For program point L424(line 424) no Hoare annotation was computed. [2020-08-18 21:58:20,444 INFO L268 CegarLoopResult]: For program point L259(lines 259 413) no Hoare annotation was computed. [2020-08-18 21:58:20,444 INFO L268 CegarLoopResult]: For program point L293(lines 293 413) no Hoare annotation was computed. [2020-08-18 21:58:20,444 INFO L268 CegarLoopResult]: For program point L194(lines 194 413) no Hoare annotation was computed. [2020-08-18 21:58:20,444 INFO L268 CegarLoopResult]: For program point L95(lines 95 413) no Hoare annotation was computed. [2020-08-18 21:58:20,445 INFO L268 CegarLoopResult]: For program point L591-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,445 INFO L268 CegarLoopResult]: For program point L558-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,445 INFO L268 CegarLoopResult]: For program point L525-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,445 INFO L268 CegarLoopResult]: For program point L492-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,445 INFO L268 CegarLoopResult]: For program point L459-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,445 INFO L268 CegarLoopResult]: For program point L426-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,445 INFO L268 CegarLoopResult]: For program point L261(lines 261 413) no Hoare annotation was computed. [2020-08-18 21:58:20,445 INFO L268 CegarLoopResult]: For program point L30(lines 30 413) no Hoare annotation was computed. [2020-08-18 21:58:20,446 INFO L268 CegarLoopResult]: For program point L592(line 592) no Hoare annotation was computed. [2020-08-18 21:58:20,446 INFO L268 CegarLoopResult]: For program point L559(line 559) no Hoare annotation was computed. [2020-08-18 21:58:20,446 INFO L268 CegarLoopResult]: For program point L526(line 526) no Hoare annotation was computed. [2020-08-18 21:58:20,446 INFO L268 CegarLoopResult]: For program point L493(line 493) no Hoare annotation was computed. [2020-08-18 21:58:20,446 INFO L268 CegarLoopResult]: For program point L460(line 460) no Hoare annotation was computed. [2020-08-18 21:58:20,446 INFO L268 CegarLoopResult]: For program point L427(line 427) no Hoare annotation was computed. [2020-08-18 21:58:20,446 INFO L268 CegarLoopResult]: For program point L394(lines 394 413) no Hoare annotation was computed. [2020-08-18 21:58:20,446 INFO L268 CegarLoopResult]: For program point L361(lines 361 413) no Hoare annotation was computed. [2020-08-18 21:58:20,447 INFO L268 CegarLoopResult]: For program point L328(lines 328 413) no Hoare annotation was computed. [2020-08-18 21:58:20,447 INFO L268 CegarLoopResult]: For program point L262(lines 262 274) no Hoare annotation was computed. [2020-08-18 21:58:20,447 INFO L268 CegarLoopResult]: For program point L262-2(lines 262 274) no Hoare annotation was computed. [2020-08-18 21:58:20,447 INFO L268 CegarLoopResult]: For program point L130(lines 130 413) no Hoare annotation was computed. [2020-08-18 21:58:20,447 INFO L268 CegarLoopResult]: For program point L65(lines 65 413) no Hoare annotation was computed. [2020-08-18 21:58:20,447 INFO L268 CegarLoopResult]: For program point L594-1(lines 594 596) no Hoare annotation was computed. [2020-08-18 21:58:20,447 INFO L268 CegarLoopResult]: For program point L561-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,447 INFO L268 CegarLoopResult]: For program point L528-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,447 INFO L268 CegarLoopResult]: For program point L495-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,448 INFO L268 CegarLoopResult]: For program point L462-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,448 INFO L268 CegarLoopResult]: For program point L429-1(lines 29 598) no Hoare annotation was computed. [2020-08-18 21:58:20,448 INFO L268 CegarLoopResult]: For program point L297(lines 297 413) no Hoare annotation was computed. [2020-08-18 21:58:20,448 INFO L268 CegarLoopResult]: For program point L198(lines 198 413) no Hoare annotation was computed. [2020-08-18 21:58:20,448 INFO L268 CegarLoopResult]: For program point L165(lines 165 413) no Hoare annotation was computed. [2020-08-18 21:58:20,448 INFO L268 CegarLoopResult]: For program point L99(lines 99 413) no Hoare annotation was computed. [2020-08-18 21:58:20,448 INFO L268 CegarLoopResult]: For program point L595(line 595) no Hoare annotation was computed. [2020-08-18 21:58:20,448 INFO L268 CegarLoopResult]: For program point L562(line 562) no Hoare annotation was computed. [2020-08-18 21:58:20,449 INFO L268 CegarLoopResult]: For program point L529(line 529) no Hoare annotation was computed. [2020-08-18 21:58:20,449 INFO L268 CegarLoopResult]: For program point L496(line 496) no Hoare annotation was computed. [2020-08-18 21:58:20,449 INFO L268 CegarLoopResult]: For program point L463(line 463) no Hoare annotation was computed. [2020-08-18 21:58:20,449 INFO L268 CegarLoopResult]: For program point L430(line 430) no Hoare annotation was computed. [2020-08-18 21:58:20,449 INFO L268 CegarLoopResult]: For program point L331(lines 331 413) no Hoare annotation was computed. [2020-08-18 21:58:20,449 INFO L268 CegarLoopResult]: For program point L298(lines 298 307) no Hoare annotation was computed. [2020-08-18 21:58:20,449 INFO L268 CegarLoopResult]: For program point L232(lines 232 413) no Hoare annotation was computed. [2020-08-18 21:58:20,449 INFO L268 CegarLoopResult]: For program point L298-2(lines 298 307) no Hoare annotation was computed. [2020-08-18 21:58:20,449 INFO L268 CegarLoopResult]: For program point L398(lines 398 413) no Hoare annotation was computed. [2020-08-18 21:58:20,450 INFO L268 CegarLoopResult]: For program point L332(lines 332 335) no Hoare annotation was computed. [2020-08-18 21:58:20,450 INFO L268 CegarLoopResult]: For program point L332-2(lines 332 335) no Hoare annotation was computed. [2020-08-18 21:58:20,450 INFO L268 CegarLoopResult]: For program point L134(lines 134 413) no Hoare annotation was computed. [2020-08-18 21:58:20,450 INFO L268 CegarLoopResult]: For program point L35(lines 35 413) no Hoare annotation was computed. [2020-08-18 21:58:20,450 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 21:58:20,450 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~a21~0 1) (<= 8 ~a17~0) (<= ~a28~0 7) (<= ~a17~0 8) (<= ~a25~0 0)) [2020-08-18 21:58:20,451 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 21:58:20,451 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 21:58:20,451 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 600 617) the Hoare annotation is: (or (not (<= |old(~a28~0)| 7)) (not (<= |old(~a17~0)| 8)) (not (<= 8 |old(~a17~0)|)) (not (<= |old(~a25~0)| 0)) (not (= ~a21~0 1)) (and (= ~a28~0 |old(~a28~0)|) (= ~a11~0 |old(~a11~0)|) (= ~a25~0 |old(~a25~0)|) (<= 8 ~a17~0) (<= ~a17~0 8) (= ~a19~0 |old(~a19~0)|))) [2020-08-18 21:58:20,451 INFO L264 CegarLoopResult]: At program point L606-2(lines 606 616) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8))) (or (not (<= |old(~a28~0)| 7)) (not (<= |old(~a17~0)| 8)) (not (<= 8 |old(~a17~0)|)) (and (<= 8 ~a17~0) .cse0) (not (<= |old(~a25~0)| 0)) (not (= ~a21~0 1)) (and (not (= ~a19~0 1)) .cse0) (and (not (= ~a28~0 8)) .cse0 (<= ~a25~0 0)) (and (= 7 ~a17~0) (= 7 ~a28~0) (= ~a25~0 1) (= ~a11~0 1)))) [2020-08-18 21:58:20,451 INFO L268 CegarLoopResult]: For program point L606-3(lines 600 617) no Hoare annotation was computed. [2020-08-18 21:58:20,451 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 600 617) no Hoare annotation was computed. [2020-08-18 21:58:20,452 INFO L264 CegarLoopResult]: At program point L614(line 614) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8))) (or (not (<= |old(~a28~0)| 7)) (not (<= |old(~a17~0)| 8)) (not (<= 8 |old(~a17~0)|)) (and (<= 8 ~a17~0) .cse0) (not (<= |old(~a25~0)| 0)) (not (= ~a21~0 1)) (and (not (= ~a19~0 1)) .cse0) (and (not (= ~a28~0 8)) .cse0 (<= ~a25~0 0)) (and (= 7 ~a17~0) (= 7 ~a28~0) (= ~a25~0 1) (= ~a11~0 1)))) [2020-08-18 21:58:20,452 INFO L268 CegarLoopResult]: For program point L614-1(line 614) no Hoare annotation was computed. [2020-08-18 21:58:20,452 INFO L268 CegarLoopResult]: For program point L611(line 611) no Hoare annotation was computed. [2020-08-18 21:58:20,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:58:20 BoogieIcfgContainer [2020-08-18 21:58:20,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:58:20,475 INFO L168 Benchmark]: Toolchain (without parser) took 21875.36 ms. Allocated memory was 143.1 MB in the beginning and 470.3 MB in the end (delta: 327.2 MB). Free memory was 102.3 MB in the beginning and 240.0 MB in the end (delta: -137.7 MB). Peak memory consumption was 341.3 MB. Max. memory is 7.1 GB. [2020-08-18 21:58:20,476 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 143.1 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 21:58:20,477 INFO L168 Benchmark]: CACSL2BoogieTranslator took 748.57 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 102.1 MB in the beginning and 171.2 MB in the end (delta: -69.1 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2020-08-18 21:58:20,478 INFO L168 Benchmark]: Boogie Preprocessor took 107.41 ms. Allocated memory is still 205.0 MB. Free memory was 171.2 MB in the beginning and 166.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-08-18 21:58:20,479 INFO L168 Benchmark]: RCFGBuilder took 1406.21 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 166.3 MB in the beginning and 180.5 MB in the end (delta: -14.2 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. [2020-08-18 21:58:20,479 INFO L168 Benchmark]: TraceAbstraction took 19608.20 ms. Allocated memory was 237.5 MB in the beginning and 470.3 MB in the end (delta: 232.8 MB). Free memory was 179.1 MB in the beginning and 240.0 MB in the end (delta: -60.9 MB). Peak memory consumption was 323.8 MB. Max. memory is 7.1 GB. [2020-08-18 21:58:20,483 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 143.1 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 748.57 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 102.1 MB in the beginning and 171.2 MB in the end (delta: -69.1 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.41 ms. Allocated memory is still 205.0 MB. Free memory was 171.2 MB in the beginning and 166.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1406.21 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 166.3 MB in the beginning and 180.5 MB in the end (delta: -14.2 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19608.20 ms. Allocated memory was 237.5 MB in the beginning and 470.3 MB in the end (delta: 232.8 MB). Free memory was 179.1 MB in the beginning and 240.0 MB in the end (delta: -60.9 MB). Peak memory consumption was 323.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 448]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 606]: Loop Invariant Derived loop invariant: (((((((!(\old(a28) <= 7) || !(\old(a17) <= 8)) || !(8 <= \old(a17))) || (8 <= a17 && a17 <= 8)) || !(\old(a25) <= 0)) || !(a21 == 1)) || (!(a19 == 1) && a17 <= 8)) || ((!(a28 == 8) && a17 <= 8) && a25 <= 0)) || (((7 == a17 && 7 == a28) && a25 == 1) && a11 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 236 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.9s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 14.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 318 SDtfs, 5064 SDslu, 482 SDs, 0 SdLazy, 7928 SolverSat, 1510 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1999occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 589 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 100 PreInvPairs, 196 NumberOfFragments, 359 HoareAnnotationTreeSize, 100 FomulaSimplifications, 404553 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8817 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1034 NumberOfCodeBlocks, 1034 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1026 ConstructedInterpolants, 0 QuantifiedInterpolants, 477856 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 273/298 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...