./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem10_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem10_label03.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ed79a69112fb3d1d928a586c813100a391292fcd ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:00:35,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:00:35,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:00:35,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:00:35,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:00:35,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:00:35,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:00:35,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:00:35,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:00:35,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:00:35,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:00:35,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:00:35,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:00:35,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:00:35,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:00:35,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:00:35,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:00:35,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:00:35,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:00:35,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:00:35,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:00:35,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:00:35,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:00:35,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:00:35,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:00:35,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:00:35,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:00:35,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:00:35,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:00:35,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:00:35,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:00:35,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:00:35,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:00:35,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:00:35,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:00:35,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:00:35,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:00:35,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:00:35,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:00:35,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:00:35,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:00:35,182 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:00:35,206 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:00:35,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:00:35,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:00:35,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:00:35,210 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:00:35,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:00:35,210 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:00:35,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:00:35,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:00:35,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:00:35,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:00:35,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:00:35,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:00:35,213 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:00:35,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:00:35,214 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:00:35,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:00:35,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:00:35,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:00:35,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:00:35,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:00:35,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:00:35,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:00:35,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:00:35,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:00:35,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:00:35,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:00:35,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:00:35,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed79a69112fb3d1d928a586c813100a391292fcd [2019-11-27 23:00:35,513 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:00:35,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:00:35,540 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:00:35,542 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:00:35,542 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:00:35,543 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem10_label03.c [2019-11-27 23:00:35,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/557f5614f/bf7a0834394b4e84979ecd10cff7812a/FLAGbdefbcf06 [2019-11-27 23:00:36,160 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:00:36,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem10_label03.c [2019-11-27 23:00:36,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/557f5614f/bf7a0834394b4e84979ecd10cff7812a/FLAGbdefbcf06 [2019-11-27 23:00:36,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/557f5614f/bf7a0834394b4e84979ecd10cff7812a [2019-11-27 23:00:36,433 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:00:36,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:00:36,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:00:36,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:00:36,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:00:36,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:00:36" (1/1) ... [2019-11-27 23:00:36,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2245ea39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:00:36, skipping insertion in model container [2019-11-27 23:00:36,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:00:36" (1/1) ... [2019-11-27 23:00:36,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:00:36,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:00:36,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:00:36,980 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:00:37,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:00:37,140 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:00:37,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:00:37 WrapperNode [2019-11-27 23:00:37,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:00:37,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:00:37,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:00:37,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:00:37,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:00:37" (1/1) ... [2019-11-27 23:00:37,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:00:37" (1/1) ... [2019-11-27 23:00:37,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:00:37,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:00:37,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:00:37,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:00:37,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:00:37" (1/1) ... [2019-11-27 23:00:37,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:00:37" (1/1) ... [2019-11-27 23:00:37,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:00:37" (1/1) ... [2019-11-27 23:00:37,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:00:37" (1/1) ... [2019-11-27 23:00:37,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:00:37" (1/1) ... [2019-11-27 23:00:37,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:00:37" (1/1) ... [2019-11-27 23:00:37,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:00:37" (1/1) ... [2019-11-27 23:00:37,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:00:37,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:00:37,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:00:37,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:00:37,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:00:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:00:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:00:37,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:00:39,088 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:00:39,089 INFO L297 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-27 23:00:39,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:00:39 BoogieIcfgContainer [2019-11-27 23:00:39,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:00:39,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:00:39,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:00:39,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:00:39,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:00:36" (1/3) ... [2019-11-27 23:00:39,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792e5dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:00:39, skipping insertion in model container [2019-11-27 23:00:39,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:00:37" (2/3) ... [2019-11-27 23:00:39,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792e5dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:00:39, skipping insertion in model container [2019-11-27 23:00:39,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:00:39" (3/3) ... [2019-11-27 23:00:39,100 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label03.c [2019-11-27 23:00:39,110 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:00:39,119 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:00:39,132 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:00:39,160 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:00:39,161 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:00:39,161 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:00:39,162 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:00:39,162 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:00:39,162 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:00:39,162 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:00:39,163 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:00:39,186 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2019-11-27 23:00:39,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-27 23:00:39,194 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:00:39,195 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:00:39,196 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:00:39,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:00:39,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1318097310, now seen corresponding path program 1 times [2019-11-27 23:00:39,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:00:39,213 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527154127] [2019-11-27 23:00:39,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:00:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:00:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:00:39,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527154127] [2019-11-27 23:00:39,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:00:39,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 23:00:39,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918109082] [2019-11-27 23:00:39,482 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:00:39,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:00:39,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:00:39,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:00:39,499 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 4 states. [2019-11-27 23:00:41,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:00:41,067 INFO L93 Difference]: Finished difference Result 694 states and 1246 transitions. [2019-11-27 23:00:41,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:00:41,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2019-11-27 23:00:41,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:00:41,089 INFO L225 Difference]: With dead ends: 694 [2019-11-27 23:00:41,089 INFO L226 Difference]: Without dead ends: 421 [2019-11-27 23:00:41,099 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:00:41,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2019-11-27 23:00:41,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2019-11-27 23:00:41,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2019-11-27 23:00:41,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 566 transitions. [2019-11-27 23:00:41,221 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 566 transitions. Word has length 36 [2019-11-27 23:00:41,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:00:41,222 INFO L462 AbstractCegarLoop]: Abstraction has 421 states and 566 transitions. [2019-11-27 23:00:41,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:00:41,223 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 566 transitions. [2019-11-27 23:00:41,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-11-27 23:00:41,239 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:00:41,240 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:00:41,241 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:00:41,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:00:41,243 INFO L82 PathProgramCache]: Analyzing trace with hash 2051277628, now seen corresponding path program 1 times [2019-11-27 23:00:41,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:00:41,244 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998881160] [2019-11-27 23:00:41,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:00:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:00:41,488 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:00:41,488 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998881160] [2019-11-27 23:00:41,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:00:41,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:00:41,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638927205] [2019-11-27 23:00:41,491 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:00:41,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:00:41,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:00:41,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:00:41,492 INFO L87 Difference]: Start difference. First operand 421 states and 566 transitions. Second operand 4 states. [2019-11-27 23:00:42,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:00:42,426 INFO L93 Difference]: Finished difference Result 1533 states and 2040 transitions. [2019-11-27 23:00:42,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:00:42,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2019-11-27 23:00:42,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:00:42,428 INFO L225 Difference]: With dead ends: 1533 [2019-11-27 23:00:42,428 INFO L226 Difference]: Without dead ends: 0 [2019-11-27 23:00:42,432 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:00:42,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-27 23:00:42,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-27 23:00:42,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-27 23:00:42,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-27 23:00:42,433 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 111 [2019-11-27 23:00:42,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:00:42,433 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-27 23:00:42,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:00:42,434 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-27 23:00:42,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-27 23:00:42,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-27 23:00:42,486 INFO L246 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2019-11-27 23:00:42,487 INFO L246 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,487 INFO L246 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,487 INFO L246 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,487 INFO L246 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,487 INFO L246 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,487 INFO L246 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,488 INFO L246 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2019-11-27 23:00:42,488 INFO L246 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2019-11-27 23:00:42,488 INFO L246 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2019-11-27 23:00:42,488 INFO L246 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2019-11-27 23:00:42,488 INFO L246 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2019-11-27 23:00:42,488 INFO L246 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2019-11-27 23:00:42,488 INFO L246 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2019-11-27 23:00:42,488 INFO L246 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2019-11-27 23:00:42,489 INFO L246 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2019-11-27 23:00:42,489 INFO L246 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2019-11-27 23:00:42,489 INFO L246 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2019-11-27 23:00:42,489 INFO L246 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,489 INFO L246 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,489 INFO L246 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,489 INFO L246 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,489 INFO L246 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,490 INFO L246 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2019-11-27 23:00:42,492 INFO L246 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2019-11-27 23:00:42,492 INFO L246 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2019-11-27 23:00:42,493 INFO L246 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2019-11-27 23:00:42,494 INFO L246 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2019-11-27 23:00:42,494 INFO L246 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2019-11-27 23:00:42,494 INFO L246 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2019-11-27 23:00:42,495 INFO L246 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2019-11-27 23:00:42,495 INFO L246 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2019-11-27 23:00:42,495 INFO L246 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2019-11-27 23:00:42,495 INFO L246 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2019-11-27 23:00:42,495 INFO L246 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2019-11-27 23:00:42,496 INFO L246 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2019-11-27 23:00:42,501 INFO L246 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2019-11-27 23:00:42,502 INFO L246 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,502 INFO L246 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,502 INFO L246 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,502 INFO L246 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,503 INFO L246 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,503 INFO L246 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2019-11-27 23:00:42,503 INFO L246 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2019-11-27 23:00:42,503 INFO L246 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2019-11-27 23:00:42,503 INFO L246 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2019-11-27 23:00:42,504 INFO L246 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2019-11-27 23:00:42,504 INFO L246 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2019-11-27 23:00:42,504 INFO L242 CegarLoopResult]: At program point L573(lines 20 574) the Hoare annotation is: (or (not (= ~a19~0 6)) (not (= ~a10~0 1))) [2019-11-27 23:00:42,505 INFO L246 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2019-11-27 23:00:42,505 INFO L246 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2019-11-27 23:00:42,505 INFO L246 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2019-11-27 23:00:42,505 INFO L246 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2019-11-27 23:00:42,505 INFO L246 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,506 INFO L246 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,506 INFO L246 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,506 INFO L246 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,506 INFO L246 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,506 INFO L246 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2019-11-27 23:00:42,507 INFO L246 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2019-11-27 23:00:42,507 INFO L246 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2019-11-27 23:00:42,507 INFO L246 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2019-11-27 23:00:42,508 INFO L246 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2019-11-27 23:00:42,508 INFO L246 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2019-11-27 23:00:42,508 INFO L246 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2019-11-27 23:00:42,508 INFO L246 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2019-11-27 23:00:42,508 INFO L246 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2019-11-27 23:00:42,509 INFO L246 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2019-11-27 23:00:42,509 INFO L249 CegarLoopResult]: At program point L576(lines 576 592) the Hoare annotation is: true [2019-11-27 23:00:42,509 INFO L246 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2019-11-27 23:00:42,509 INFO L246 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2019-11-27 23:00:42,509 INFO L246 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2019-11-27 23:00:42,509 INFO L246 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,510 INFO L246 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,510 INFO L246 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,510 INFO L246 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,510 INFO L246 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,510 INFO L246 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2019-11-27 23:00:42,511 INFO L246 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2019-11-27 23:00:42,511 INFO L246 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2019-11-27 23:00:42,511 INFO L246 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2019-11-27 23:00:42,511 INFO L246 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2019-11-27 23:00:42,511 INFO L246 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2019-11-27 23:00:42,512 INFO L246 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2019-11-27 23:00:42,512 INFO L246 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2019-11-27 23:00:42,512 INFO L246 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2019-11-27 23:00:42,512 INFO L246 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,512 INFO L246 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,512 INFO L246 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,513 INFO L246 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,513 INFO L246 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,513 INFO L246 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2019-11-27 23:00:42,513 INFO L246 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2019-11-27 23:00:42,513 INFO L246 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2019-11-27 23:00:42,514 INFO L246 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2019-11-27 23:00:42,514 INFO L246 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2019-11-27 23:00:42,514 INFO L246 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2019-11-27 23:00:42,514 INFO L246 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2019-11-27 23:00:42,514 INFO L246 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2019-11-27 23:00:42,516 INFO L246 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2019-11-27 23:00:42,516 INFO L246 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2019-11-27 23:00:42,516 INFO L246 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2019-11-27 23:00:42,516 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-27 23:00:42,517 INFO L246 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2019-11-27 23:00:42,517 INFO L242 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (or (not (= ~a19~0 6)) (not (= ~a10~0 1))) [2019-11-27 23:00:42,517 INFO L246 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2019-11-27 23:00:42,517 INFO L246 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,517 INFO L246 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,518 INFO L246 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,518 INFO L246 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,518 INFO L246 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2019-11-27 23:00:42,518 INFO L246 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,518 INFO L246 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,519 INFO L246 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2019-11-27 23:00:42,519 INFO L246 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2019-11-27 23:00:42,519 INFO L246 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2019-11-27 23:00:42,519 INFO L246 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2019-11-27 23:00:42,519 INFO L246 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2019-11-27 23:00:42,520 INFO L246 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2019-11-27 23:00:42,520 INFO L246 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2019-11-27 23:00:42,520 INFO L246 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2019-11-27 23:00:42,520 INFO L246 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-27 23:00:42,520 INFO L246 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2019-11-27 23:00:42,521 INFO L246 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2019-11-27 23:00:42,521 INFO L246 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2019-11-27 23:00:42,521 INFO L246 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2019-11-27 23:00:42,521 INFO L246 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,521 INFO L246 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,522 INFO L246 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,522 INFO L246 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,522 INFO L246 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,522 INFO L246 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,522 INFO L246 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2019-11-27 23:00:42,523 INFO L246 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2019-11-27 23:00:42,523 INFO L246 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2019-11-27 23:00:42,523 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-27 23:00:42,523 INFO L246 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2019-11-27 23:00:42,524 INFO L246 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2019-11-27 23:00:42,524 INFO L246 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2019-11-27 23:00:42,525 INFO L246 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2019-11-27 23:00:42,525 INFO L246 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2019-11-27 23:00:42,525 INFO L246 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2019-11-27 23:00:42,526 INFO L246 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2019-11-27 23:00:42,527 INFO L246 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2019-11-27 23:00:42,527 INFO L246 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2019-11-27 23:00:42,527 INFO L246 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2019-11-27 23:00:42,528 INFO L246 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2019-11-27 23:00:42,528 INFO L246 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2019-11-27 23:00:42,528 INFO L246 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,528 INFO L246 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,529 INFO L246 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,533 INFO L246 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,533 INFO L246 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,534 INFO L246 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,534 INFO L246 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2019-11-27 23:00:42,534 INFO L246 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2019-11-27 23:00:42,534 INFO L246 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2019-11-27 23:00:42,535 INFO L246 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2019-11-27 23:00:42,535 INFO L246 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2019-11-27 23:00:42,535 INFO L246 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2019-11-27 23:00:42,536 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-27 23:00:42,536 INFO L246 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2019-11-27 23:00:42,536 INFO L246 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2019-11-27 23:00:42,539 INFO L246 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2019-11-27 23:00:42,540 INFO L246 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2019-11-27 23:00:42,540 INFO L246 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2019-11-27 23:00:42,540 INFO L246 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2019-11-27 23:00:42,540 INFO L246 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2019-11-27 23:00:42,541 INFO L246 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,541 INFO L246 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,541 INFO L246 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,541 INFO L246 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,542 INFO L246 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,542 INFO L246 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,542 INFO L246 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2019-11-27 23:00:42,542 INFO L246 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2019-11-27 23:00:42,542 INFO L246 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2019-11-27 23:00:42,543 INFO L246 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2019-11-27 23:00:42,543 INFO L246 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2019-11-27 23:00:42,543 INFO L246 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2019-11-27 23:00:42,543 INFO L246 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2019-11-27 23:00:42,543 INFO L246 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2019-11-27 23:00:42,543 INFO L246 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2019-11-27 23:00:42,544 INFO L246 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2019-11-27 23:00:42,544 INFO L246 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2019-11-27 23:00:42,544 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-27 23:00:42,544 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 112) no Hoare annotation was computed. [2019-11-27 23:00:42,545 INFO L246 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2019-11-27 23:00:42,545 INFO L246 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,546 INFO L246 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,546 INFO L246 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,546 INFO L246 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,546 INFO L246 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,547 INFO L246 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2019-11-27 23:00:42,547 INFO L246 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2019-11-27 23:00:42,547 INFO L246 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2019-11-27 23:00:42,547 INFO L246 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2019-11-27 23:00:42,548 INFO L246 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2019-11-27 23:00:42,548 INFO L246 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2019-11-27 23:00:42,548 INFO L246 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2019-11-27 23:00:42,548 INFO L246 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2019-11-27 23:00:42,549 INFO L246 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2019-11-27 23:00:42,549 INFO L246 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2019-11-27 23:00:42,549 INFO L246 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2019-11-27 23:00:42,549 INFO L246 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2019-11-27 23:00:42,550 INFO L246 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2019-11-27 23:00:42,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:00:42 BoogieIcfgContainer [2019-11-27 23:00:42,574 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:00:42,574 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:00:42,575 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:00:42,575 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:00:42,575 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:00:39" (3/4) ... [2019-11-27 23:00:42,580 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-27 23:00:42,600 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-27 23:00:42,601 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-27 23:00:42,782 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:00:42,783 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:00:42,785 INFO L168 Benchmark]: Toolchain (without parser) took 6349.83 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 229.6 MB). Free memory was 960.4 MB in the beginning and 966.3 MB in the end (delta: -5.9 MB). Peak memory consumption was 223.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:00:42,785 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:00:42,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:00:42,786 INFO L168 Benchmark]: Boogie Procedure Inliner took 142.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:00:42,786 INFO L168 Benchmark]: Boogie Preprocessor took 149.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:00:42,787 INFO L168 Benchmark]: RCFGBuilder took 1655.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 104.1 MB). Peak memory consumption was 104.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:00:42,787 INFO L168 Benchmark]: TraceAbstraction took 3482.22 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 78.1 MB). Free memory was 1.0 GB in the beginning and 989.5 MB in the end (delta: 18.0 MB). Peak memory consumption was 96.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:00:42,788 INFO L168 Benchmark]: Witness Printer took 208.26 ms. Allocated memory is still 1.3 GB. Free memory was 989.5 MB in the beginning and 966.3 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:00:42,791 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 706.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 142.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 149.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1655.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 104.1 MB). Peak memory consumption was 104.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3482.22 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 78.1 MB). Free memory was 1.0 GB in the beginning and 989.5 MB in the end (delta: 18.0 MB). Peak memory consumption was 96.1 MB. Max. memory is 11.5 GB. * Witness Printer took 208.26 ms. Allocated memory is still 1.3 GB. Free memory was 989.5 MB in the beginning and 966.3 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 112]: 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: 582]: Loop Invariant Derived loop invariant: !(a19 == 6) || !(a10 == 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: !(a19 == 6) || !(a10 == 1) - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 206 locations, 1 error locations. Result: SAFE, OverallTime: 3.2s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 614 SDslu, 21 SDs, 0 SdLazy, 1339 SolverSat, 454 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=421occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 22 NumberOfFragments, 19 HoareAnnotationTreeSize, 3 FomulaSimplifications, 64 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 27035 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 33/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...