./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0a4ffe7f-6c0a-4290-9c3f-f3b0b656e79a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0a4ffe7f-6c0a-4290-9c3f-f3b0b656e79a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0a4ffe7f-6c0a-4290-9c3f-f3b0b656e79a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0a4ffe7f-6c0a-4290-9c3f-f3b0b656e79a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0a4ffe7f-6c0a-4290-9c3f-f3b0b656e79a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0a4ffe7f-6c0a-4290-9c3f-f3b0b656e79a/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39038350569cc1983dc9a58167271fc220c66f89 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:16:50,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:16:50,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:16:50,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:16:50,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:16:50,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:16:50,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:16:50,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:16:50,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:16:50,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:16:50,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:16:50,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:16:50,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:16:50,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:16:50,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:16:50,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:16:50,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:16:50,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:16:50,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:16:50,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:16:50,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:16:50,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:16:50,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:16:50,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:16:50,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:16:50,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:16:50,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:16:50,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:16:50,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:16:50,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:16:50,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:16:50,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:16:50,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:16:50,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:16:50,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:16:50,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:16:50,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:16:50,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:16:50,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:16:50,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:16:50,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:16:50,411 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0a4ffe7f-6c0a-4290-9c3f-f3b0b656e79a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:16:50,459 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:16:50,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:16:50,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:16:50,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:16:50,462 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:16:50,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:16:50,463 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:16:50,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:16:50,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:16:50,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:16:50,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:16:50,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:16:50,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:16:50,465 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:16:50,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:16:50,466 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:16:50,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:16:50,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:16:50,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:16:50,466 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:16:50,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:16:50,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:16:50,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:16:50,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:16:50,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:16:50,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:16:50,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:16:50,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:16:50,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:16:50,469 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_0a4ffe7f-6c0a-4290-9c3f-f3b0b656e79a/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0a4ffe7f-6c0a-4290-9c3f-f3b0b656e79a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39038350569cc1983dc9a58167271fc220c66f89 [2020-11-28 03:16:50,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:16:50,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:16:50,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:16:50,854 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:16:50,856 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:16:50,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0a4ffe7f-6c0a-4290-9c3f-f3b0b656e79a/bin/uautomizer/../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-2.c [2020-11-28 03:16:50,941 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0a4ffe7f-6c0a-4290-9c3f-f3b0b656e79a/bin/uautomizer/data/ad7e7b1a4/ae43478ac7a84213a68fa4d44b6db7fb/FLAG07d589c07 [2020-11-28 03:16:51,490 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:16:51,491 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0a4ffe7f-6c0a-4290-9c3f-f3b0b656e79a/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-2.c [2020-11-28 03:16:51,504 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0a4ffe7f-6c0a-4290-9c3f-f3b0b656e79a/bin/uautomizer/data/ad7e7b1a4/ae43478ac7a84213a68fa4d44b6db7fb/FLAG07d589c07 [2020-11-28 03:16:51,828 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0a4ffe7f-6c0a-4290-9c3f-f3b0b656e79a/bin/uautomizer/data/ad7e7b1a4/ae43478ac7a84213a68fa4d44b6db7fb [2020-11-28 03:16:51,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:16:51,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:16:51,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:51,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:16:51,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:16:51,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:51" (1/1) ... [2020-11-28 03:16:51,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a5a5281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:51, skipping insertion in model container [2020-11-28 03:16:51,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:51" (1/1) ... [2020-11-28 03:16:51,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:16:51,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:16:52,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:52,253 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:16:52,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:52,336 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:16:52,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52 WrapperNode [2020-11-28 03:16:52,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:52,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:52,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:16:52,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:16:52,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:52,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:16:52,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:16:52,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:16:52,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:16:52,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:16:52,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:16:52,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:16:52,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a4ffe7f-6c0a-4290-9c3f-f3b0b656e79a/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:16:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:16:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:16:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:16:52,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:16:52,888 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-28 03:16:53,683 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-11-28 03:16:53,683 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-11-28 03:16:53,694 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:16:53,694 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:16:53,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:53 BoogieIcfgContainer [2020-11-28 03:16:53,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:16:53,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:16:53,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:16:53,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:16:53,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:16:51" (1/3) ... [2020-11-28 03:16:53,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472d5959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:53, skipping insertion in model container [2020-11-28 03:16:53,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (2/3) ... [2020-11-28 03:16:53,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472d5959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:53, skipping insertion in model container [2020-11-28 03:16:53,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:53" (3/3) ... [2020-11-28 03:16:53,706 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_1.cil-2.c [2020-11-28 03:16:53,717 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:16:53,722 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:16:53,735 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:16:53,760 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:16:53,761 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:16:53,761 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:16:53,761 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:16:53,761 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:16:53,761 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:16:53,761 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:16:53,762 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:16:53,784 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-11-28 03:16:53,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:16:53,793 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:53,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:53,794 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:53,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:53,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1457700990, now seen corresponding path program 1 times [2020-11-28 03:16:53,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:53,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419293555] [2020-11-28 03:16:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:54,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419293555] [2020-11-28 03:16:54,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:54,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:16:54,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323269754] [2020-11-28 03:16:54,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:16:54,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:54,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:16:54,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:54,040 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2020-11-28 03:16:54,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:54,365 INFO L93 Difference]: Finished difference Result 251 states and 426 transitions. [2020-11-28 03:16:54,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:16:54,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-28 03:16:54,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:54,381 INFO L225 Difference]: With dead ends: 251 [2020-11-28 03:16:54,381 INFO L226 Difference]: Without dead ends: 114 [2020-11-28 03:16:54,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:54,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-11-28 03:16:54,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-11-28 03:16:54,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-28 03:16:54,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 171 transitions. [2020-11-28 03:16:54,444 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 171 transitions. Word has length 24 [2020-11-28 03:16:54,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:54,445 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 171 transitions. [2020-11-28 03:16:54,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:16:54,445 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 171 transitions. [2020-11-28 03:16:54,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-28 03:16:54,451 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:54,451 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-28 03:16:54,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:16:54,452 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:54,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:54,456 INFO L82 PathProgramCache]: Analyzing trace with hash 561711387, now seen corresponding path program 1 times [2020-11-28 03:16:54,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:54,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514576245] [2020-11-28 03:16:54,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:54,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514576245] [2020-11-28 03:16:54,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:54,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:16:54,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346546920] [2020-11-28 03:16:54,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:16:54,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:54,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:16:54,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:54,613 INFO L87 Difference]: Start difference. First operand 114 states and 171 transitions. Second operand 3 states. [2020-11-28 03:16:54,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:54,843 INFO L93 Difference]: Finished difference Result 236 states and 358 transitions. [2020-11-28 03:16:54,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:16:54,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-11-28 03:16:54,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:54,847 INFO L225 Difference]: With dead ends: 236 [2020-11-28 03:16:54,847 INFO L226 Difference]: Without dead ends: 132 [2020-11-28 03:16:54,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:54,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-28 03:16:54,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2020-11-28 03:16:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-11-28 03:16:54,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 191 transitions. [2020-11-28 03:16:54,874 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 191 transitions. Word has length 37 [2020-11-28 03:16:54,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:54,875 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 191 transitions. [2020-11-28 03:16:54,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:16:54,875 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 191 transitions. [2020-11-28 03:16:54,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-28 03:16:54,877 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:54,878 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-11-28 03:16:54,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:16:54,878 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:54,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:54,879 INFO L82 PathProgramCache]: Analyzing trace with hash 356447844, now seen corresponding path program 1 times [2020-11-28 03:16:54,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:54,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110048902] [2020-11-28 03:16:54,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:55,004 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 03:16:55,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110048902] [2020-11-28 03:16:55,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:55,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:16:55,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454250553] [2020-11-28 03:16:55,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:16:55,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:55,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:16:55,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:55,007 INFO L87 Difference]: Start difference. First operand 129 states and 191 transitions. Second operand 3 states. [2020-11-28 03:16:55,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:55,231 INFO L93 Difference]: Finished difference Result 269 states and 404 transitions. [2020-11-28 03:16:55,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:16:55,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-11-28 03:16:55,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:55,234 INFO L225 Difference]: With dead ends: 269 [2020-11-28 03:16:55,234 INFO L226 Difference]: Without dead ends: 150 [2020-11-28 03:16:55,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:55,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-28 03:16:55,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2020-11-28 03:16:55,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-28 03:16:55,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 213 transitions. [2020-11-28 03:16:55,249 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 213 transitions. Word has length 51 [2020-11-28 03:16:55,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:55,250 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 213 transitions. [2020-11-28 03:16:55,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:16:55,250 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 213 transitions. [2020-11-28 03:16:55,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-28 03:16:55,253 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:55,253 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 03:16:55,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:16:55,253 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:55,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:55,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1231511209, now seen corresponding path program 1 times [2020-11-28 03:16:55,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:55,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918655351] [2020-11-28 03:16:55,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 03:16:55,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918655351] [2020-11-28 03:16:55,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:55,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:16:55,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685052179] [2020-11-28 03:16:55,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:16:55,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:55,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:16:55,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:55,346 INFO L87 Difference]: Start difference. First operand 146 states and 213 transitions. Second operand 3 states. [2020-11-28 03:16:55,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:55,605 INFO L93 Difference]: Finished difference Result 333 states and 501 transitions. [2020-11-28 03:16:55,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:16:55,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-11-28 03:16:55,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:55,608 INFO L225 Difference]: With dead ends: 333 [2020-11-28 03:16:55,608 INFO L226 Difference]: Without dead ends: 196 [2020-11-28 03:16:55,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:55,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-11-28 03:16:55,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 187. [2020-11-28 03:16:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-11-28 03:16:55,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 263 transitions. [2020-11-28 03:16:55,619 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 263 transitions. Word has length 68 [2020-11-28 03:16:55,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:55,620 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 263 transitions. [2020-11-28 03:16:55,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:16:55,620 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 263 transitions. [2020-11-28 03:16:55,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-28 03:16:55,622 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:55,623 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 03:16:55,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:16:55,623 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:55,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:55,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1258017753, now seen corresponding path program 1 times [2020-11-28 03:16:55,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:55,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404818094] [2020-11-28 03:16:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 03:16:55,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404818094] [2020-11-28 03:16:55,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:55,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:16:55,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562200340] [2020-11-28 03:16:55,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:16:55,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:55,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:16:55,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:55,701 INFO L87 Difference]: Start difference. First operand 187 states and 263 transitions. Second operand 3 states. [2020-11-28 03:16:55,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:55,885 INFO L93 Difference]: Finished difference Result 387 states and 552 transitions. [2020-11-28 03:16:55,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:16:55,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-11-28 03:16:55,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:55,887 INFO L225 Difference]: With dead ends: 387 [2020-11-28 03:16:55,887 INFO L226 Difference]: Without dead ends: 210 [2020-11-28 03:16:55,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:55,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-11-28 03:16:55,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 206. [2020-11-28 03:16:55,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-11-28 03:16:55,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 287 transitions. [2020-11-28 03:16:55,916 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 287 transitions. Word has length 68 [2020-11-28 03:16:55,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:55,917 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 287 transitions. [2020-11-28 03:16:55,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:16:55,917 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 287 transitions. [2020-11-28 03:16:55,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-28 03:16:55,920 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:55,921 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-11-28 03:16:55,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:16:55,921 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:55,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:55,922 INFO L82 PathProgramCache]: Analyzing trace with hash -901961809, now seen corresponding path program 1 times [2020-11-28 03:16:55,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:55,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213837688] [2020-11-28 03:16:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-28 03:16:56,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213837688] [2020-11-28 03:16:56,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:56,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:16:56,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934840118] [2020-11-28 03:16:56,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:16:56,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:56,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:16:56,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:56,076 INFO L87 Difference]: Start difference. First operand 206 states and 287 transitions. Second operand 3 states. [2020-11-28 03:16:56,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:56,298 INFO L93 Difference]: Finished difference Result 426 states and 602 transitions. [2020-11-28 03:16:56,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:16:56,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-11-28 03:16:56,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:56,301 INFO L225 Difference]: With dead ends: 426 [2020-11-28 03:16:56,302 INFO L226 Difference]: Without dead ends: 230 [2020-11-28 03:16:56,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:56,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-11-28 03:16:56,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 227. [2020-11-28 03:16:56,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-11-28 03:16:56,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 313 transitions. [2020-11-28 03:16:56,328 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 313 transitions. Word has length 84 [2020-11-28 03:16:56,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:56,329 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 313 transitions. [2020-11-28 03:16:56,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:16:56,329 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 313 transitions. [2020-11-28 03:16:56,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-28 03:16:56,333 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:56,334 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2020-11-28 03:16:56,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:16:56,334 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:56,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:56,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1810291289, now seen corresponding path program 1 times [2020-11-28 03:16:56,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:56,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180547253] [2020-11-28 03:16:56,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:56,449 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-28 03:16:56,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180547253] [2020-11-28 03:16:56,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:56,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:16:56,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324740219] [2020-11-28 03:16:56,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:16:56,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:56,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:16:56,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:56,454 INFO L87 Difference]: Start difference. First operand 227 states and 313 transitions. Second operand 3 states. [2020-11-28 03:16:56,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:56,512 INFO L93 Difference]: Finished difference Result 658 states and 909 transitions. [2020-11-28 03:16:56,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:16:56,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-11-28 03:16:56,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:56,518 INFO L225 Difference]: With dead ends: 658 [2020-11-28 03:16:56,518 INFO L226 Difference]: Without dead ends: 441 [2020-11-28 03:16:56,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:56,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-11-28 03:16:56,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2020-11-28 03:16:56,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-11-28 03:16:56,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 604 transitions. [2020-11-28 03:16:56,545 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 604 transitions. Word has length 104 [2020-11-28 03:16:56,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:56,546 INFO L481 AbstractCegarLoop]: Abstraction has 441 states and 604 transitions. [2020-11-28 03:16:56,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:16:56,546 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 604 transitions. [2020-11-28 03:16:56,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-28 03:16:56,553 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:56,553 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2020-11-28 03:16:56,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:16:56,553 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:56,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:56,554 INFO L82 PathProgramCache]: Analyzing trace with hash 151283369, now seen corresponding path program 1 times [2020-11-28 03:16:56,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:56,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576984547] [2020-11-28 03:16:56,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-11-28 03:16:56,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576984547] [2020-11-28 03:16:56,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:56,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:16:56,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250345680] [2020-11-28 03:16:56,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:16:56,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:56,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:16:56,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:56,671 INFO L87 Difference]: Start difference. First operand 441 states and 604 transitions. Second operand 3 states. [2020-11-28 03:16:56,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:56,709 INFO L93 Difference]: Finished difference Result 893 states and 1222 transitions. [2020-11-28 03:16:56,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:16:56,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-11-28 03:16:56,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:56,714 INFO L225 Difference]: With dead ends: 893 [2020-11-28 03:16:56,714 INFO L226 Difference]: Without dead ends: 462 [2020-11-28 03:16:56,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:56,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-11-28 03:16:56,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2020-11-28 03:16:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-11-28 03:16:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 631 transitions. [2020-11-28 03:16:56,739 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 631 transitions. Word has length 104 [2020-11-28 03:16:56,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:56,740 INFO L481 AbstractCegarLoop]: Abstraction has 462 states and 631 transitions. [2020-11-28 03:16:56,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:16:56,741 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 631 transitions. [2020-11-28 03:16:56,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-28 03:16:56,743 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:56,743 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2020-11-28 03:16:56,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:16:56,744 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:56,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:56,744 INFO L82 PathProgramCache]: Analyzing trace with hash 178348971, now seen corresponding path program 1 times [2020-11-28 03:16:56,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:56,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276345678] [2020-11-28 03:16:56,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-11-28 03:16:56,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276345678] [2020-11-28 03:16:56,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:56,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:16:56,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78232232] [2020-11-28 03:16:56,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:16:56,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:56,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:16:56,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:56,821 INFO L87 Difference]: Start difference. First operand 462 states and 631 transitions. Second operand 3 states. [2020-11-28 03:16:56,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:56,859 INFO L93 Difference]: Finished difference Result 941 states and 1283 transitions. [2020-11-28 03:16:56,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:16:56,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-11-28 03:16:56,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:56,863 INFO L225 Difference]: With dead ends: 941 [2020-11-28 03:16:56,863 INFO L226 Difference]: Without dead ends: 489 [2020-11-28 03:16:56,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:56,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-11-28 03:16:56,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2020-11-28 03:16:56,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-11-28 03:16:56,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 665 transitions. [2020-11-28 03:16:56,881 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 665 transitions. Word has length 104 [2020-11-28 03:16:56,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:56,881 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 665 transitions. [2020-11-28 03:16:56,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:16:56,881 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 665 transitions. [2020-11-28 03:16:56,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-28 03:16:56,883 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:56,883 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2020-11-28 03:16:56,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:16:56,884 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:56,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:56,886 INFO L82 PathProgramCache]: Analyzing trace with hash -492994255, now seen corresponding path program 1 times [2020-11-28 03:16:56,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:56,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268541558] [2020-11-28 03:16:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:56,950 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:56,993 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:57,099 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:57,099 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:16:57,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:16:57,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:16:57 BoogieIcfgContainer [2020-11-28 03:16:57,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:16:57,254 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:16:57,254 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:16:57,254 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:16:57,255 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:53" (3/4) ... [2020-11-28 03:16:57,257 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:16:57,380 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0a4ffe7f-6c0a-4290-9c3f-f3b0b656e79a/bin/uautomizer/witness.graphml [2020-11-28 03:16:57,381 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:16:57,383 INFO L168 Benchmark]: Toolchain (without parser) took 5534.96 ms. Allocated memory was 83.9 MB in the beginning and 125.8 MB in the end (delta: 41.9 MB). Free memory was 55.0 MB in the beginning and 72.6 MB in the end (delta: -17.7 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:57,383 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory was 62.6 MB in the beginning and 62.5 MB in the end (delta: 55.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:57,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.97 ms. Allocated memory is still 83.9 MB. Free memory was 54.8 MB in the beginning and 40.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:57,385 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.63 ms. Allocated memory is still 83.9 MB. Free memory was 40.4 MB in the beginning and 62.1 MB in the end (delta: -21.7 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:57,385 INFO L168 Benchmark]: Boogie Preprocessor took 80.02 ms. Allocated memory is still 83.9 MB. Free memory was 62.1 MB in the beginning and 60.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:57,386 INFO L168 Benchmark]: RCFGBuilder took 1185.82 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 60.1 MB in the beginning and 61.4 MB in the end (delta: -1.3 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:57,386 INFO L168 Benchmark]: TraceAbstraction took 3555.02 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 60.7 MB in the beginning and 85.2 MB in the end (delta: -24.5 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:57,387 INFO L168 Benchmark]: Witness Printer took 126.77 ms. Allocated memory is still 125.8 MB. Free memory was 85.2 MB in the beginning and 72.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:57,389 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory was 62.6 MB in the beginning and 62.5 MB in the end (delta: 55.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 485.97 ms. Allocated memory is still 83.9 MB. Free memory was 54.8 MB in the beginning and 40.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.63 ms. Allocated memory is still 83.9 MB. Free memory was 40.4 MB in the beginning and 62.1 MB in the end (delta: -21.7 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.02 ms. Allocated memory is still 83.9 MB. Free memory was 62.1 MB in the beginning and 60.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1185.82 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 60.1 MB in the beginning and 61.4 MB in the end (delta: -1.3 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3555.02 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 60.7 MB in the beginning and 85.2 MB in the end (delta: -24.5 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. * Witness Printer took 126.77 ms. Allocated memory is still 125.8 MB. Free memory was 85.2 MB in the beginning and 72.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L550] int s ; [L554] s = 12292 [L13] int s__info_callback = __VERIFIER_nondet_int() ; [L14] int s__in_handshake = __VERIFIER_nondet_int() ; [L15] int s__state ; [L16] int s__new_session ; [L17] int s__server ; [L18] int s__version = __VERIFIER_nondet_int() ; [L19] int s__type ; [L20] int s__init_num ; [L21] int s__bbio = __VERIFIER_nondet_int() ; [L22] int s__wbio = __VERIFIER_nondet_int() ; [L23] int s__hit = __VERIFIER_nondet_int() ; [L24] int s__rwstate ; [L25] int s__init_buf___0 = 1; [L26] int s__debug = __VERIFIER_nondet_int() ; [L27] int s__shutdown ; [L28] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L29] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L33] int s__s3__change_cipher_spec ; [L34] int s__s3__flags ; [L35] int s__s3__delay_buf_pop_ret ; [L36] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L41] int s__s3__tmp__next_state___0 ; [L42] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L43] int s__session__cipher ; [L44] int s__session__compress_meth ; [L45] int buf ; [L46] unsigned long tmp ; [L47] unsigned long l ; [L48] int num1 ; [L49] int cb ; [L50] int ret ; [L51] int new_state ; [L52] int state ; [L53] int skip ; [L54] int tmp___0 ; [L55] int tmp___1 = __VERIFIER_nondet_int() ; [L56] int tmp___2 = __VERIFIER_nondet_int() ; [L57] int tmp___3 = __VERIFIER_nondet_int() ; [L58] int tmp___4 = __VERIFIER_nondet_int() ; [L59] int tmp___5 = __VERIFIER_nondet_int() ; [L60] int tmp___6 = __VERIFIER_nondet_int() ; [L61] int tmp___7 = __VERIFIER_nondet_int() ; [L62] int tmp___8 = __VERIFIER_nondet_int() ; [L63] int tmp___9 = __VERIFIER_nondet_int() ; [L64] int blastFlag ; [L65] int __cil_tmp55 ; [L66] long __cil_tmp56 ; [L67] long __cil_tmp57 ; [L68] long __cil_tmp58 ; [L69] long __cil_tmp59 ; [L70] long __cil_tmp60 ; [L71] long __cil_tmp61 ; [L72] long __cil_tmp62 ; [L73] long __cil_tmp63 ; [L74] long __cil_tmp64 ; [L78] s__state = initial_state [L79] blastFlag = 0 [L80] tmp = __VERIFIER_nondet_int() [L81] cb = 0 [L82] ret = -1 [L83] skip = 0 [L84] tmp___0 = 0 [L85] COND TRUE s__info_callback != 0 [L86] cb = s__info_callback [L92] s__in_handshake ++ [L93] COND FALSE !(tmp___1 - 12288) [L99] COND TRUE 1 [L101] state = s__state [L102] COND TRUE s__state == 12292 [L204] s__new_session = 1 [L205] s__state = 4096 [L206] s__ctx__stats__sess_connect_renegotiate ++ [L211] s__server = 0 [L212] COND TRUE cb != 0 [L216] __cil_tmp55 = s__version - 65280 [L217] COND FALSE !(__cil_tmp55 != 768) [L222] s__type = 4096 [L223] COND FALSE !(s__init_buf___0 == 0) [L235] COND FALSE !(! tmp___4) [L239] COND FALSE !(! tmp___5) [L243] s__state = 4368 [L244] s__ctx__stats__sess_connect ++ [L245] s__init_num = 0 [L517] COND FALSE !(! s__s3__tmp__reuse_message) [L534] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND TRUE s__state == 4368 [L249] s__shutdown = 0 [L250] ret = __VERIFIER_nondet_int() [L251] COND TRUE blastFlag == 0 [L252] blastFlag = 1 [L254] COND FALSE !(ret <= 0) [L257] s__state = 4384 [L258] s__init_num = 0 [L259] COND TRUE s__bbio != s__wbio [L517] COND FALSE !(! s__s3__tmp__reuse_message) [L534] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND TRUE s__state == 4384 [L265] ret = __VERIFIER_nondet_int() [L266] COND TRUE blastFlag == 1 [L267] blastFlag = 2 [L269] COND FALSE !(ret <= 0) [L272] COND FALSE !(\read(s__hit)) [L275] s__state = 4400 [L277] s__init_num = 0 [L517] COND FALSE !(! s__s3__tmp__reuse_message) [L534] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND TRUE s__state == 4400 [L281] COND FALSE !(s__s3__tmp__new_cipher__algorithms - 256) [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 2 [L286] blastFlag = 3 [L288] COND FALSE !(ret <= 0) [L292] s__state = 4416 [L293] s__init_num = 0 [L517] COND FALSE !(! s__s3__tmp__reuse_message) [L534] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND TRUE s__state == 4416 [L297] ret = __VERIFIER_nondet_int() [L298] COND TRUE blastFlag == 3 [L299] blastFlag = 4 [L301] COND FALSE !(ret <= 0) [L304] s__state = 4432 [L305] s__init_num = 0 [L306] COND FALSE !(! tmp___6) [L517] COND FALSE !(! s__s3__tmp__reuse_message) [L534] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND FALSE !(s__state == 4416) [L138] COND FALSE !(s__state == 4417) [L141] COND TRUE s__state == 4432 [L313] ret = __VERIFIER_nondet_int() [L314] COND TRUE blastFlag == 4 [L3] __assert_fail("0", "s3_clnt_1.cil-2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 128 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1621 SDtfs, 272 SDslu, 961 SDs, 0 SdLazy, 642 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=489occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 23 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 750 NumberOfCodeBlocks, 750 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 635 ConstructedInterpolants, 0 QuantifiedInterpolants, 77801 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 586/586 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...