./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/nested9.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f8c60168-e5e1-4fe5-92b4-16a60b181c23/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f8c60168-e5e1-4fe5-92b4-16a60b181c23/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f8c60168-e5e1-4fe5-92b4-16a60b181c23/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f8c60168-e5e1-4fe5-92b4-16a60b181c23/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-invgen/nested9.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f8c60168-e5e1-4fe5-92b4-16a60b181c23/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f8c60168-e5e1-4fe5-92b4-16a60b181c23/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b0874b2316aff3266709463f0d72702527bf3a82 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 17:29:48,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 17:29:48,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 17:29:48,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 17:29:48,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 17:29:48,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 17:29:48,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 17:29:48,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 17:29:48,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 17:29:48,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 17:29:48,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 17:29:48,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 17:29:48,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 17:29:48,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 17:29:48,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 17:29:48,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 17:29:48,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 17:29:48,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 17:29:48,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 17:29:48,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 17:29:48,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 17:29:48,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 17:29:48,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 17:29:48,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 17:29:48,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 17:29:48,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 17:29:48,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 17:29:48,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 17:29:48,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 17:29:48,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 17:29:48,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 17:29:48,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 17:29:48,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 17:29:48,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 17:29:48,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 17:29:48,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 17:29:48,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 17:29:48,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 17:29:48,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 17:29:48,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 17:29:48,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 17:29:48,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f8c60168-e5e1-4fe5-92b4-16a60b181c23/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 17:29:48,535 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 17:29:48,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 17:29:48,536 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 17:29:48,537 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 17:29:48,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 17:29:48,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 17:29:48,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 17:29:48,539 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 17:29:48,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 17:29:48,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 17:29:48,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 17:29:48,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 17:29:48,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 17:29:48,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 17:29:48,541 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 17:29:48,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 17:29:48,542 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 17:29:48,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 17:29:48,542 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 17:29:48,542 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 17:29:48,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 17:29:48,543 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 17:29:48,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 17:29:48,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 17:29:48,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 17:29:48,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 17:29:48,544 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 17:29:48,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 17:29:48,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 17:29:48,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_f8c60168-e5e1-4fe5-92b4-16a60b181c23/bin/ukojak/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f8c60168-e5e1-4fe5-92b4-16a60b181c23/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0874b2316aff3266709463f0d72702527bf3a82 [2020-12-01 17:29:48,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 17:29:48,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 17:29:48,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 17:29:48,849 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 17:29:48,850 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 17:29:48,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f8c60168-e5e1-4fe5-92b4-16a60b181c23/bin/ukojak/../../sv-benchmarks/c/loop-invgen/nested9.i [2020-12-01 17:29:48,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f8c60168-e5e1-4fe5-92b4-16a60b181c23/bin/ukojak/data/7c3fa1cf7/03a876d94f46462e8929283e6945e527/FLAG3fd415029 [2020-12-01 17:29:49,571 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 17:29:49,575 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f8c60168-e5e1-4fe5-92b4-16a60b181c23/sv-benchmarks/c/loop-invgen/nested9.i [2020-12-01 17:29:49,587 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f8c60168-e5e1-4fe5-92b4-16a60b181c23/bin/ukojak/data/7c3fa1cf7/03a876d94f46462e8929283e6945e527/FLAG3fd415029 [2020-12-01 17:29:49,933 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f8c60168-e5e1-4fe5-92b4-16a60b181c23/bin/ukojak/data/7c3fa1cf7/03a876d94f46462e8929283e6945e527 [2020-12-01 17:29:49,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 17:29:49,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 17:29:49,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 17:29:49,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 17:29:49,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 17:29:49,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:29:49" (1/1) ... [2020-12-01 17:29:49,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f14abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:49, skipping insertion in model container [2020-12-01 17:29:49,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:29:49" (1/1) ... [2020-12-01 17:29:49,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 17:29:49,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 17:29:50,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:29:50,221 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 17:29:50,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:29:50,258 INFO L208 MainTranslator]: Completed translation [2020-12-01 17:29:50,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:50 WrapperNode [2020-12-01 17:29:50,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 17:29:50,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 17:29:50,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 17:29:50,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 17:29:50,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:50" (1/1) ... [2020-12-01 17:29:50,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:50" (1/1) ... [2020-12-01 17:29:50,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 17:29:50,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 17:29:50,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 17:29:50,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 17:29:50,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:50" (1/1) ... [2020-12-01 17:29:50,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:50" (1/1) ... [2020-12-01 17:29:50,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:50" (1/1) ... [2020-12-01 17:29:50,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:50" (1/1) ... [2020-12-01 17:29:50,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:50" (1/1) ... [2020-12-01 17:29:50,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:50" (1/1) ... [2020-12-01 17:29:50,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:50" (1/1) ... [2020-12-01 17:29:50,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 17:29:50,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 17:29:50,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 17:29:50,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 17:29:50,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f8c60168-e5e1-4fe5-92b4-16a60b181c23/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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:10000 [2020-12-01 17:29:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 17:29:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 17:29:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 17:29:50,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 17:29:50,849 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 17:29:50,850 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-01 17:29:50,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:29:50 BoogieIcfgContainer [2020-12-01 17:29:50,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 17:29:50,854 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 17:29:50,854 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 17:29:50,885 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 17:29:50,885 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:29:50" (1/1) ... [2020-12-01 17:29:50,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 17:29:50,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 17 states and 25 transitions. [2020-12-01 17:29:50,948 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 25 transitions. [2020-12-01 17:29:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 17:29:50,951 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:29:51,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:51,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 20 states and 32 transitions. [2020-12-01 17:29:51,440 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 32 transitions. [2020-12-01 17:29:51,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 17:29:51,443 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:51,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:29:51,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:51,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 23 states and 45 transitions. [2020-12-01 17:29:51,947 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 45 transitions. [2020-12-01 17:29:51,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 17:29:51,948 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:52,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:29:52,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:52,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 26 states and 52 transitions. [2020-12-01 17:29:52,445 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 52 transitions. [2020-12-01 17:29:52,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 17:29:52,447 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 17:29:53,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:53,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 28 states and 60 transitions. [2020-12-01 17:29:53,072 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 60 transitions. [2020-12-01 17:29:53,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 17:29:53,072 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:53,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-01 17:29:53,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:53,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 30 states and 68 transitions. [2020-12-01 17:29:53,867 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 68 transitions. [2020-12-01 17:29:53,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 17:29:53,870 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 17:29:54,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:54,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 31 states and 70 transitions. [2020-12-01 17:29:54,228 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 70 transitions. [2020-12-01 17:29:54,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 17:29:54,229 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:54,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 17:29:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:54,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 32 states and 71 transitions. [2020-12-01 17:29:54,561 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 71 transitions. [2020-12-01 17:29:54,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 17:29:54,562 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:54,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:29:56,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:56,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 38 states and 92 transitions. [2020-12-01 17:29:56,356 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 92 transitions. [2020-12-01 17:29:56,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 17:29:56,357 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-01 17:29:57,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 40 states and 95 transitions. [2020-12-01 17:29:57,052 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 95 transitions. [2020-12-01 17:29:57,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 17:29:57,053 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 17:29:59,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 45 states and 110 transitions. [2020-12-01 17:29:59,149 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 110 transitions. [2020-12-01 17:29:59,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 17:29:59,151 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:59,179 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 17:29:59,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:59,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 46 states and 115 transitions. [2020-12-01 17:29:59,583 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 115 transitions. [2020-12-01 17:29:59,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 17:29:59,584 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:59,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 17:30:00,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:00,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 47 states and 117 transitions. [2020-12-01 17:30:00,011 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 117 transitions. [2020-12-01 17:30:00,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 17:30:00,012 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:30:02,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:02,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 52 states and 133 transitions. [2020-12-01 17:30:02,223 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 133 transitions. [2020-12-01 17:30:02,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 17:30:02,225 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:02,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 17:30:05,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:05,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 58 states and 152 transitions. [2020-12-01 17:30:05,033 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 152 transitions. [2020-12-01 17:30:05,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 17:30:05,034 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:05,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 17:30:05,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:05,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 59 states and 157 transitions. [2020-12-01 17:30:05,444 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 157 transitions. [2020-12-01 17:30:05,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 17:30:05,445 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 17:30:06,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:06,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 60 states and 157 transitions. [2020-12-01 17:30:06,119 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 157 transitions. [2020-12-01 17:30:06,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 17:30:06,121 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-01 17:30:07,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:07,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 62 states and 162 transitions. [2020-12-01 17:30:07,008 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 162 transitions. [2020-12-01 17:30:07,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 17:30:07,014 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:07,063 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-01 17:30:08,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:08,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 64 states and 167 transitions. [2020-12-01 17:30:08,037 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 167 transitions. [2020-12-01 17:30:08,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 17:30:08,038 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:08,091 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-01 17:30:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:08,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 66 states and 171 transitions. [2020-12-01 17:30:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 171 transitions. [2020-12-01 17:30:08,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 17:30:08,973 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-01 17:30:10,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 69 states and 180 transitions. [2020-12-01 17:30:10,348 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 180 transitions. [2020-12-01 17:30:10,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 17:30:10,349 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 17:30:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:13,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 75 states and 199 transitions. [2020-12-01 17:30:13,117 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 199 transitions. [2020-12-01 17:30:13,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 17:30:13,119 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 17:30:13,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:13,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 76 states and 200 transitions. [2020-12-01 17:30:13,588 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 200 transitions. [2020-12-01 17:30:13,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 17:30:13,589 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:13,611 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 17:30:14,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:14,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 78 states and 203 transitions. [2020-12-01 17:30:14,507 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 203 transitions. [2020-12-01 17:30:14,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 17:30:14,508 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-01 17:30:14,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:14,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 79 states and 204 transitions. [2020-12-01 17:30:14,973 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 204 transitions. [2020-12-01 17:30:14,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 17:30:14,974 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:14,996 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-01 17:30:15,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:15,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 80 states and 205 transitions. [2020-12-01 17:30:15,492 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 205 transitions. [2020-12-01 17:30:15,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 17:30:15,492 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-01 17:30:16,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:16,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 81 states and 206 transitions. [2020-12-01 17:30:16,195 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 206 transitions. [2020-12-01 17:30:16,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 17:30:16,197 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:16,256 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-01 17:30:20,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:20,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 90 states and 228 transitions. [2020-12-01 17:30:20,869 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 228 transitions. [2020-12-01 17:30:20,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 17:30:20,869 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:20,904 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-01 17:30:22,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:22,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 92 states and 235 transitions. [2020-12-01 17:30:22,006 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 235 transitions. [2020-12-01 17:30:22,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 17:30:22,007 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-01 17:30:23,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:23,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 95 states and 237 transitions. [2020-12-01 17:30:23,011 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 237 transitions. [2020-12-01 17:30:23,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 17:30:23,011 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:23,037 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-01 17:30:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:23,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 96 states and 237 transitions. [2020-12-01 17:30:23,738 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 237 transitions. [2020-12-01 17:30:23,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 17:30:23,739 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:23,763 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-01 17:30:24,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:24,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 97 states and 238 transitions. [2020-12-01 17:30:24,388 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 238 transitions. [2020-12-01 17:30:24,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-01 17:30:24,389 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:24,674 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-01 17:30:28,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 103 states and 247 transitions. [2020-12-01 17:30:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 247 transitions. [2020-12-01 17:30:28,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-01 17:30:28,537 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-01 17:30:30,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:30,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 106 states and 254 transitions. [2020-12-01 17:30:30,234 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 254 transitions. [2020-12-01 17:30:30,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-01 17:30:30,235 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-01 17:30:30,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:30,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 107 states and 254 transitions. [2020-12-01 17:30:30,886 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 254 transitions. [2020-12-01 17:30:30,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-01 17:30:30,887 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:30,914 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-01 17:30:31,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:31,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 108 states and 254 transitions. [2020-12-01 17:30:31,642 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 254 transitions. [2020-12-01 17:30:31,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-01 17:30:31,642 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:31,665 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-01 17:30:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:32,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 109 states and 254 transitions. [2020-12-01 17:30:32,279 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 254 transitions. [2020-12-01 17:30:32,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-01 17:30:32,279 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:32,307 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-01 17:30:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 110 states and 256 transitions. [2020-12-01 17:30:32,931 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 256 transitions. [2020-12-01 17:30:32,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-01 17:30:32,932 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 17:30:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:38,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 115 states and 264 transitions. [2020-12-01 17:30:38,007 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 264 transitions. [2020-12-01 17:30:38,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-01 17:30:38,008 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-01 17:30:38,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 116 states and 264 transitions. [2020-12-01 17:30:38,901 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 264 transitions. [2020-12-01 17:30:38,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-01 17:30:38,902 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:38,930 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-01 17:30:39,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:39,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 117 states and 264 transitions. [2020-12-01 17:30:39,678 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 264 transitions. [2020-12-01 17:30:39,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-01 17:30:39,679 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:40,206 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-01 17:30:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:50,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 130 states and 299 transitions. [2020-12-01 17:30:50,317 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 299 transitions. [2020-12-01 17:30:50,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-01 17:30:50,318 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:50,344 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-01 17:30:53,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:53,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 134 states and 303 transitions. [2020-12-01 17:30:53,488 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 303 transitions. [2020-12-01 17:30:53,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-01 17:30:53,488 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:53,509 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-01 17:30:54,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:54,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 135 states and 303 transitions. [2020-12-01 17:30:54,340 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 303 transitions. [2020-12-01 17:30:54,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-01 17:30:54,340 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:54,373 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-12-01 17:30:55,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 136 states and 303 transitions. [2020-12-01 17:30:55,444 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 303 transitions. [2020-12-01 17:30:55,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-01 17:30:55,445 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-01 17:30:56,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:56,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 137 states and 306 transitions. [2020-12-01 17:30:56,506 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 306 transitions. [2020-12-01 17:30:56,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-01 17:30:56,507 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-01 17:30:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:30:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 140 states and 313 transitions. [2020-12-01 17:30:59,334 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 313 transitions. [2020-12-01 17:30:59,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-01 17:30:59,335 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:30:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:30:59,360 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-01 17:31:01,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:31:01,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 142 states and 317 transitions. [2020-12-01 17:31:01,642 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 317 transitions. [2020-12-01 17:31:01,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-01 17:31:01,643 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:31:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:31:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-01 17:31:02,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:31:02,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 143 states and 318 transitions. [2020-12-01 17:31:02,551 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 318 transitions. [2020-12-01 17:31:02,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-01 17:31:02,551 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:31:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:31:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-12-01 17:31:04,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:31:04,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 145 states and 321 transitions. [2020-12-01 17:31:04,386 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 321 transitions. [2020-12-01 17:31:04,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-01 17:31:04,387 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:31:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:31:04,427 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-12-01 17:31:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:31:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 148 states and 326 transitions. [2020-12-01 17:31:07,340 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 326 transitions. [2020-12-01 17:31:07,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-01 17:31:07,341 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:31:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:31:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 18 proven. 60 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-01 17:31:21,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:31:21,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 159 states and 346 transitions. [2020-12-01 17:31:21,069 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 346 transitions. [2020-12-01 17:31:21,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-01 17:31:21,070 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:31:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:31:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 18 proven. 60 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-01 17:31:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:31:29,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 166 states and 354 transitions. [2020-12-01 17:31:29,183 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 354 transitions. [2020-12-01 17:31:29,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-01 17:31:29,184 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:31:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:31:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-01 17:31:43,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:31:43,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 177 states and 377 transitions. [2020-12-01 17:31:43,665 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 377 transitions. [2020-12-01 17:31:43,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-01 17:31:43,666 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:31:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:31:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-12-01 17:31:45,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:31:45,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 178 states and 378 transitions. [2020-12-01 17:31:45,103 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 378 transitions. [2020-12-01 17:31:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-01 17:31:45,104 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:31:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:31:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-12-01 17:31:50,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:31:50,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 177 states and 378 transitions. [2020-12-01 17:31:50,821 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 378 transitions. [2020-12-01 17:31:50,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-01 17:31:50,822 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:31:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:31:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 87 proven. 34 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-01 17:32:02,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:32:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 184 states and 392 transitions. [2020-12-01 17:32:02,717 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 392 transitions. [2020-12-01 17:32:02,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-01 17:32:02,718 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:32:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:32:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 87 proven. 34 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-01 17:32:05,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:32:05,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 186 states and 393 transitions. [2020-12-01 17:32:05,888 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 393 transitions. [2020-12-01 17:32:05,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-01 17:32:05,889 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:32:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:32:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-12-01 17:32:07,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:32:07,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 187 states and 393 transitions. [2020-12-01 17:32:07,682 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 393 transitions. [2020-12-01 17:32:07,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-01 17:32:07,683 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:32:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:32:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 107 proven. 27 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-01 17:32:21,826 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-12-01 17:32:24,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:32:24,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 194 states and 400 transitions. [2020-12-01 17:32:24,894 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 400 transitions. [2020-12-01 17:32:24,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-01 17:32:24,894 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:32:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:32:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 48 proven. 99 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-01 17:32:48,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:32:48,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 208 states and 419 transitions. [2020-12-01 17:32:48,810 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 419 transitions. [2020-12-01 17:32:48,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-01 17:32:48,810 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:32:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:32:48,847 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 48 proven. 99 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-01 17:32:50,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:32:50,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 209 states and 419 transitions. [2020-12-01 17:32:50,784 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 419 transitions. [2020-12-01 17:32:50,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-01 17:32:50,785 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:32:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:32:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 175 proven. 51 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-01 17:32:52,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:32:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 210 states and 420 transitions. [2020-12-01 17:32:52,819 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 420 transitions. [2020-12-01 17:32:52,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-01 17:32:52,820 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:32:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:32:53,427 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 223 proven. 22 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-12-01 17:33:00,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:33:00,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 213 states and 425 transitions. [2020-12-01 17:33:00,207 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 425 transitions. [2020-12-01 17:33:00,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-01 17:33:00,208 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:33:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:33:00,259 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 219 proven. 99 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-12-01 17:33:18,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:33:18,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 223 states and 441 transitions. [2020-12-01 17:33:18,589 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 441 transitions. [2020-12-01 17:33:18,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-01 17:33:18,590 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:33:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:33:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 303 proven. 35 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-12-01 17:33:36,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:33:36,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 233 states and 454 transitions. [2020-12-01 17:33:36,175 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 454 transitions. [2020-12-01 17:33:36,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-01 17:33:36,176 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:33:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:33:36,222 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 240 proven. 120 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-12-01 17:33:50,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:33:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 101 states and 205 transitions. [2020-12-01 17:33:50,062 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 205 transitions. [2020-12-01 17:33:50,062 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 17:33:50,062 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 67 iterations. [2020-12-01 17:33:50,069 INFO L765 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2020-12-01 17:33:50,455 WARN L197 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 25 [2020-12-01 17:33:50,896 WARN L197 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 28 [2020-12-01 17:33:51,204 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 17 [2020-12-01 17:33:52,088 WARN L197 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 27 [2020-12-01 17:33:52,089 INFO L569 CodeCheckObserver]: Invariant with dag size 25 [2020-12-01 17:33:52,116 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-12-01 17:33:52,117 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-12-01 17:33:52,117 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-12-01 17:33:52,117 INFO L569 CodeCheckObserver]: Invariant with dag size 17 [2020-12-01 17:33:52,119 INFO L569 CodeCheckObserver]: Invariant with dag size 27 [2020-12-01 17:33:52,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 05:33:52 ImpRootNode [2020-12-01 17:33:52,122 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 17:33:52,122 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 17:33:52,123 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 17:33:52,123 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 17:33:52,124 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:29:50" (3/4) ... [2020-12-01 17:33:52,128 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 17:33:52,139 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-01 17:33:52,139 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-01 17:33:52,139 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 17:33:52,140 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 17:33:52,228 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f8c60168-e5e1-4fe5-92b4-16a60b181c23/bin/ukojak/witness.graphml [2020-12-01 17:33:52,228 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 17:33:52,229 INFO L168 Benchmark]: Toolchain (without parser) took 242291.32 ms. Allocated memory was 86.0 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 56.5 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 362.4 MB. Max. memory is 16.1 GB. [2020-12-01 17:33:52,230 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 86.0 MB. Free memory was 43.4 MB in the beginning and 43.3 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:33:52,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.78 ms. Allocated memory is still 86.0 MB. Free memory was 56.3 MB in the beginning and 64.1 MB in the end (delta: -7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 17:33:52,231 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.97 ms. Allocated memory is still 86.0 MB. Free memory was 64.1 MB in the beginning and 62.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:33:52,232 INFO L168 Benchmark]: Boogie Preprocessor took 25.55 ms. Allocated memory is still 86.0 MB. Free memory was 62.8 MB in the beginning and 61.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:33:52,232 INFO L168 Benchmark]: RCFGBuilder took 524.37 ms. Allocated memory is still 86.0 MB. Free memory was 61.7 MB in the beginning and 43.9 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-01 17:33:52,233 INFO L168 Benchmark]: CodeCheck took 241268.18 ms. Allocated memory was 86.0 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 43.9 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 348.6 MB. Max. memory is 16.1 GB. [2020-12-01 17:33:52,233 INFO L168 Benchmark]: Witness Printer took 105.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:33:52,236 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 239.1s, OverallIterations: 67, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 SDtfs, 481752080 SDslu, 0 SDs, 0 SdLazy, 1121000382 SolverSat, -102736818 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21532 GetRequests, 19693 SyntacticMatches, 889 SemanticMatches, 950 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458940 ImplicationChecksByTransitivity, 230.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 12.4s InterpolantComputationTime, 2010 NumberOfCodeBlocks, 2010 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 1944 ConstructedInterpolants, 0 QuantifiedInterpolants, 258940 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 66 InterpolantComputations, 4 PerfectInterpolantSequences, 3369/4890 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 12]: 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: 1]: Loop Invariant Derived loop invariant: ((3 * i <= j + 1 && j + 1 <= 2 * n + i) || ((2 * i <= j && j + 1 < 3 * i) && i + 1 <= n)) || (((i == 0 && k == 0) && i + 1 <= n) && j + 1 <= 2 * n + i) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((i == 0 && i + 1 <= n) || 3 * i <= j) || (2 * i <= j && i + 1 <= n) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((3 * i <= j + 1 && j + 1 <= 2 * n + i) || ((2 * i <= j && j + 1 < 3 * i) && i + 1 <= n)) || (3 * i <= j + 1 && j < k + 1)) || ((i == 0 && i + 1 <= n) && j < k + 1) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 86.0 MB. Free memory was 43.4 MB in the beginning and 43.3 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 318.78 ms. Allocated memory is still 86.0 MB. Free memory was 56.3 MB in the beginning and 64.1 MB in the end (delta: -7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.97 ms. Allocated memory is still 86.0 MB. Free memory was 64.1 MB in the beginning and 62.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.55 ms. Allocated memory is still 86.0 MB. Free memory was 62.8 MB in the beginning and 61.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 524.37 ms. Allocated memory is still 86.0 MB. Free memory was 61.7 MB in the beginning and 43.9 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * CodeCheck took 241268.18 ms. Allocated memory was 86.0 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 43.9 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 348.6 MB. Max. memory is 16.1 GB. * Witness Printer took 105.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...