./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9bbd8ebbfdd1aa7b2aaa2f32f767526fd317d11dcf6b707f4c34423040b4383f --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 23:11:43,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 23:11:43,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 23:11:43,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 23:11:43,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 23:11:43,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 23:11:43,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 23:11:43,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 23:11:43,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 23:11:43,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 23:11:43,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 23:11:43,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 23:11:43,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 23:11:43,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 23:11:43,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 23:11:43,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 23:11:43,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 23:11:43,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 23:11:43,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 23:11:43,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 23:11:43,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 23:11:43,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 23:11:43,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 23:11:43,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 23:11:43,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 23:11:43,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 23:11:43,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 23:11:43,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 23:11:43,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 23:11:43,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 23:11:43,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 23:11:43,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 23:11:43,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 23:11:43,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 23:11:43,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 23:11:43,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 23:11:43,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 23:11:43,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 23:11:43,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 23:11:43,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 23:11:43,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 23:11:43,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-14 23:11:43,624 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 23:11:43,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 23:11:43,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 23:11:43,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 23:11:43,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 23:11:43,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 23:11:43,627 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 23:11:43,628 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 23:11:43,628 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 23:11:43,628 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 23:11:43,629 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 23:11:43,629 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 23:11:43,629 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 23:11:43,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 23:11:43,629 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 23:11:43,629 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 23:11:43,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 23:11:43,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 23:11:43,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 23:11:43,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 23:11:43,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 23:11:43,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 23:11:43,630 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 23:11:43,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 23:11:43,631 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 23:11:43,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 23:11:43,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 23:11:43,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 23:11:43,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 23:11:43,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 23:11:43,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 23:11:43,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 23:11:43,633 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 23:11:43,633 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bbd8ebbfdd1aa7b2aaa2f32f767526fd317d11dcf6b707f4c34423040b4383f [2021-12-14 23:11:43,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 23:11:43,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 23:11:43,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 23:11:43,885 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 23:11:43,886 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 23:11:43,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c [2021-12-14 23:11:43,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a14731bb/a31338307fcd451ab4c1870165cc0601/FLAG96da8b776 [2021-12-14 23:11:44,256 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 23:11:44,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c [2021-12-14 23:11:44,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a14731bb/a31338307fcd451ab4c1870165cc0601/FLAG96da8b776 [2021-12-14 23:11:44,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a14731bb/a31338307fcd451ab4c1870165cc0601 [2021-12-14 23:11:44,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 23:11:44,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 23:11:44,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 23:11:44,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 23:11:44,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 23:11:44,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:11:44" (1/1) ... [2021-12-14 23:11:44,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c8634c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:44, skipping insertion in model container [2021-12-14 23:11:44,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:11:44" (1/1) ... [2021-12-14 23:11:44,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 23:11:44,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 23:11:44,846 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c[14184,14197] [2021-12-14 23:11:44,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:11:44,852 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 23:11:44,870 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c[14184,14197] [2021-12-14 23:11:44,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:11:44,884 INFO L208 MainTranslator]: Completed translation [2021-12-14 23:11:44,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:44 WrapperNode [2021-12-14 23:11:44,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 23:11:44,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 23:11:44,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 23:11:44,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 23:11:44,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:44" (1/1) ... [2021-12-14 23:11:44,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:44" (1/1) ... [2021-12-14 23:11:44,913 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 135 [2021-12-14 23:11:44,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 23:11:44,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 23:11:44,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 23:11:44,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 23:11:44,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:44" (1/1) ... [2021-12-14 23:11:44,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:44" (1/1) ... [2021-12-14 23:11:44,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:44" (1/1) ... [2021-12-14 23:11:44,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:44" (1/1) ... [2021-12-14 23:11:44,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:44" (1/1) ... [2021-12-14 23:11:44,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:44" (1/1) ... [2021-12-14 23:11:44,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:44" (1/1) ... [2021-12-14 23:11:44,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 23:11:44,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 23:11:44,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 23:11:44,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 23:11:44,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:44" (1/1) ... [2021-12-14 23:11:44,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:44,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:44,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:44,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-14 23:11:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 23:11:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 23:11:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 23:11:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 23:11:45,033 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 23:11:45,035 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 23:11:45,158 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 23:11:45,168 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 23:11:45,170 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 23:11:45,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:11:45 BoogieIcfgContainer [2021-12-14 23:11:45,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 23:11:45,172 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 23:11:45,172 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 23:11:45,175 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 23:11:45,176 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:11:45,176 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 11:11:44" (1/3) ... [2021-12-14 23:11:45,177 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4b2fccf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:11:45, skipping insertion in model container [2021-12-14 23:11:45,177 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:11:45,177 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:44" (2/3) ... [2021-12-14 23:11:45,177 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4b2fccf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:11:45, skipping insertion in model container [2021-12-14 23:11:45,177 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:11:45,178 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:11:45" (3/3) ... [2021-12-14 23:11:45,179 INFO L388 chiAutomizerObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2021-12-14 23:11:45,211 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 23:11:45,211 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 23:11:45,211 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 23:11:45,211 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 23:11:45,211 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 23:11:45,211 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 23:11:45,211 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 23:11:45,212 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 23:11:45,221 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 45 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 44 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:45,232 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-12-14 23:11:45,232 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:11:45,232 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:11:45,237 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:11:45,237 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-14 23:11:45,237 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 23:11:45,237 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 45 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 44 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:45,239 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-12-14 23:11:45,242 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:11:45,242 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:11:45,242 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:11:45,243 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-14 23:11:45,248 INFO L791 eck$LassoCheckResult]: Stem: 25#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~s__verify_mode~0#1, main_~s__session__peer~0#1, main_~s__s3__tmp__new_cipher__algorithms~0#1, main_~buf~0#1, main_~cb~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~s__verify_mode~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~s__session__peer~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~s__s3__tmp__new_cipher__algorithms~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~buf~0#1;havoc main_~cb~0#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 19#L188true [2021-12-14 23:11:45,248 INFO L793 eck$LassoCheckResult]: Loop: 19#L188true assume !false; 21#L35true assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 34#L41true assume 8466 == main_~s__state~0#1; 31#L42true assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 1; 29#L90-1true main_~s__state~0#1 := 8496; 19#L188true [2021-12-14 23:11:45,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:45,252 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-14 23:11:45,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:45,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238804493] [2021-12-14 23:11:45,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:45,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:45,312 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:45,343 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:45,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:45,348 INFO L85 PathProgramCache]: Analyzing trace with hash 39285361, now seen corresponding path program 1 times [2021-12-14 23:11:45,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:45,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885477054] [2021-12-14 23:11:45,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:45,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:45,365 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:45,376 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:45,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:45,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724847, now seen corresponding path program 1 times [2021-12-14 23:11:45,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:45,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408549389] [2021-12-14 23:11:45,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:45,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:45,388 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:45,394 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:45,499 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:45,499 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:45,504 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:45,504 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:45,504 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:11:45,504 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:45,504 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:45,505 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:45,505 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration1_Loop [2021-12-14 23:11:45,505 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:45,505 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:45,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:45,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:45,567 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:45,568 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:11:45,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:45,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:45,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:45,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-14 23:11:45,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:11:45,574 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:45,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:45,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:45,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:45,615 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:45,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-14 23:11:45,617 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:11:45,617 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:45,640 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:11:45,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:45,658 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:45,659 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:45,659 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:45,659 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:45,659 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:11:45,659 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:45,659 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:45,659 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:45,659 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration1_Loop [2021-12-14 23:11:45,659 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:45,659 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:45,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:45,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:45,706 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:45,709 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:11:45,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:45,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:45,718 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:45,723 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:11:45,730 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:11:45,730 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:11:45,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:11:45,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:11:45,731 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:11:45,733 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:11:45,733 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:11:45,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-14 23:11:45,745 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:11:45,751 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:11:45,751 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:11:45,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:45,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:45,753 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:45,757 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:11:45,757 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:11:45,758 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:11:45,758 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~blastFlag~0#1) = -2*ULTIMATE.start_main_~blastFlag~0#1 + 1 Supporting invariants [] [2021-12-14 23:11:45,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-14 23:11:45,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:45,778 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:11:45,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:45,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:11:45,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:45,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:11:45,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:45,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:45,901 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-14 23:11:45,902 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 45 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 44 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:45,963 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 45 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 44 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 96 states and 154 transitions. Complement of second has 5 states. [2021-12-14 23:11:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-14 23:11:45,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:45,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2021-12-14 23:11:45,969 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 81 transitions. Stem has 2 letters. Loop has 5 letters. [2021-12-14 23:11:45,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:45,969 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 81 transitions. Stem has 7 letters. Loop has 5 letters. [2021-12-14 23:11:45,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:45,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 81 transitions. Stem has 2 letters. Loop has 10 letters. [2021-12-14 23:11:45,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:45,970 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 96 states and 154 transitions. [2021-12-14 23:11:45,979 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-12-14 23:11:45,984 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 96 states to 82 states and 129 transitions. [2021-12-14 23:11:45,985 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-12-14 23:11:45,985 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-12-14 23:11:45,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 129 transitions. [2021-12-14 23:11:45,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:45,986 INFO L681 BuchiCegarLoop]: Abstraction has 82 states and 129 transitions. [2021-12-14 23:11:45,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states and 129 transitions. [2021-12-14 23:11:46,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2021-12-14 23:11:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 80 states have (on average 1.5875) internal successors, (127), 79 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:46,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 127 transitions. [2021-12-14 23:11:46,007 INFO L704 BuchiCegarLoop]: Abstraction has 80 states and 127 transitions. [2021-12-14 23:11:46,007 INFO L587 BuchiCegarLoop]: Abstraction has 80 states and 127 transitions. [2021-12-14 23:11:46,008 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 23:11:46,008 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states and 127 transitions. [2021-12-14 23:11:46,009 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-12-14 23:11:46,009 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:11:46,009 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:11:46,009 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-14 23:11:46,009 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-14 23:11:46,010 INFO L791 eck$LassoCheckResult]: Stem: 244#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 218#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~s__verify_mode~0#1, main_~s__session__peer~0#1, main_~s__s3__tmp__new_cipher__algorithms~0#1, main_~buf~0#1, main_~cb~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~s__verify_mode~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~s__session__peer~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~s__s3__tmp__new_cipher__algorithms~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~buf~0#1;havoc main_~cb~0#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 219#L188 assume !false; 236#L35 [2021-12-14 23:11:46,010 INFO L793 eck$LassoCheckResult]: Loop: 236#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 240#L41 assume 8466 == main_~s__state~0#1; 257#L42 assume !(0 == main_~blastFlag~0#1); 253#L90-1 main_~s__state~0#1 := 8496; 188#L188 assume !false; 236#L35 [2021-12-14 23:11:46,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:46,010 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-14 23:11:46,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:46,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628646193] [2021-12-14 23:11:46,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:46,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:46,015 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:46,020 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:46,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:46,021 INFO L85 PathProgramCache]: Analyzing trace with hash 44052933, now seen corresponding path program 1 times [2021-12-14 23:11:46,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:46,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827947831] [2021-12-14 23:11:46,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:46,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:46,024 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:46,027 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:46,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:46,027 INFO L85 PathProgramCache]: Analyzing trace with hash 297897342, now seen corresponding path program 1 times [2021-12-14 23:11:46,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:46,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795072452] [2021-12-14 23:11:46,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:46,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:46,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:11:46,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795072452] [2021-12-14 23:11:46,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795072452] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:11:46,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:11:46,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:11:46,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101679399] [2021-12-14 23:11:46,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:11:46,079 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:46,079 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:46,079 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:46,080 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:46,080 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:11:46,080 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:46,080 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:46,080 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:46,080 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration2_Loop [2021-12-14 23:11:46,080 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:46,081 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:46,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:46,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:46,121 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:46,122 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:11:46,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:46,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:46,123 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:46,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-14 23:11:46,152 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:11:46,152 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:46,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:46,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:46,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:46,180 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:46,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-14 23:11:46,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:11:46,190 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:46,206 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:11:46,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-14 23:11:46,222 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:46,222 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:46,222 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:46,222 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:46,222 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:11:46,222 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:46,222 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:46,222 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:46,222 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration2_Loop [2021-12-14 23:11:46,222 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:46,222 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:46,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:46,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:46,268 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:46,268 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:11:46,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:46,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:46,270 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:46,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-14 23:11:46,273 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:11:46,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:11:46,280 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:11:46,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:11:46,280 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:11:46,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:11:46,281 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:11:46,282 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:11:46,296 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:11:46,298 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:11:46,298 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:11:46,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:46,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:46,300 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:46,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-14 23:11:46,302 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:11:46,302 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:11:46,302 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:11:46,302 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = -1*ULTIMATE.start_main_~s__state~0#1 + 8481 Supporting invariants [] [2021-12-14 23:11:46,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:46,322 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:11:46,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:46,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:46,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:11:46,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:46,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:11:46,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:46,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:46,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:46,422 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 23:11:46,422 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 80 states and 127 transitions. cyclomatic complexity: 49 Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:46,510 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 80 states and 127 transitions. cyclomatic complexity: 49. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 236 states and 345 transitions. Complement of second has 7 states. [2021-12-14 23:11:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-14 23:11:46,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:46,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2021-12-14 23:11:46,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 49 transitions. Stem has 3 letters. Loop has 5 letters. [2021-12-14 23:11:46,512 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:46,512 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 49 transitions. Stem has 8 letters. Loop has 5 letters. [2021-12-14 23:11:46,512 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:46,512 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 49 transitions. Stem has 3 letters. Loop has 10 letters. [2021-12-14 23:11:46,512 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:46,512 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 236 states and 345 transitions. [2021-12-14 23:11:46,515 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-12-14 23:11:46,516 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 236 states to 165 states and 261 transitions. [2021-12-14 23:11:46,516 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2021-12-14 23:11:46,516 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 79 [2021-12-14 23:11:46,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 165 states and 261 transitions. [2021-12-14 23:11:46,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:46,517 INFO L681 BuchiCegarLoop]: Abstraction has 165 states and 261 transitions. [2021-12-14 23:11:46,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states and 261 transitions. [2021-12-14 23:11:46,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 98. [2021-12-14 23:11:46,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 98 states have (on average 1.5510204081632653) internal successors, (152), 97 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:46,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 152 transitions. [2021-12-14 23:11:46,525 INFO L704 BuchiCegarLoop]: Abstraction has 98 states and 152 transitions. [2021-12-14 23:11:46,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:11:46,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:11:46,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:11:46,529 INFO L87 Difference]: Start difference. First operand 98 states and 152 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:46,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:11:46,551 INFO L93 Difference]: Finished difference Result 178 states and 266 transitions. [2021-12-14 23:11:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:11:46,552 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 178 states and 266 transitions. [2021-12-14 23:11:46,553 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 74 [2021-12-14 23:11:46,557 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 178 states to 175 states and 263 transitions. [2021-12-14 23:11:46,559 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2021-12-14 23:11:46,560 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 82 [2021-12-14 23:11:46,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 175 states and 263 transitions. [2021-12-14 23:11:46,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:46,561 INFO L681 BuchiCegarLoop]: Abstraction has 175 states and 263 transitions. [2021-12-14 23:11:46,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states and 263 transitions. [2021-12-14 23:11:46,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2021-12-14 23:11:46,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 173 states have (on average 1.5086705202312138) internal successors, (261), 172 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:46,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 261 transitions. [2021-12-14 23:11:46,571 INFO L704 BuchiCegarLoop]: Abstraction has 173 states and 261 transitions. [2021-12-14 23:11:46,571 INFO L587 BuchiCegarLoop]: Abstraction has 173 states and 261 transitions. [2021-12-14 23:11:46,571 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-14 23:11:46,571 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 173 states and 261 transitions. [2021-12-14 23:11:46,572 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 74 [2021-12-14 23:11:46,572 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:11:46,572 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:11:46,572 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-14 23:11:46,573 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-14 23:11:46,573 INFO L791 eck$LassoCheckResult]: Stem: 895#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 859#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~s__verify_mode~0#1, main_~s__session__peer~0#1, main_~s__s3__tmp__new_cipher__algorithms~0#1, main_~buf~0#1, main_~cb~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~s__verify_mode~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~s__session__peer~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~s__s3__tmp__new_cipher__algorithms~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~buf~0#1;havoc main_~cb~0#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 860#L188 assume !false; 879#L35 [2021-12-14 23:11:46,573 INFO L793 eck$LassoCheckResult]: Loop: 879#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 887#L41 assume !(8466 == main_~s__state~0#1); 837#L44 assume 8496 == main_~s__state~0#1; 838#L45 assume !(1 == main_~blastFlag~0#1); 891#L97-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 831#L188 assume !false; 879#L35 [2021-12-14 23:11:46,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:46,574 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2021-12-14 23:11:46,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:46,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613243874] [2021-12-14 23:11:46,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:46,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:46,595 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:46,599 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:46,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:46,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1365768499, now seen corresponding path program 1 times [2021-12-14 23:11:46,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:46,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509100656] [2021-12-14 23:11:46,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:46,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:46,602 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:46,604 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:46,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:46,605 INFO L85 PathProgramCache]: Analyzing trace with hash 645010586, now seen corresponding path program 1 times [2021-12-14 23:11:46,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:46,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042998446] [2021-12-14 23:11:46,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:46,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:46,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:11:46,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042998446] [2021-12-14 23:11:46,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042998446] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:11:46,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:11:46,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:11:46,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904794547] [2021-12-14 23:11:46,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:11:46,652 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:46,652 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:46,652 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:46,652 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:46,653 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:11:46,653 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:46,653 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:46,653 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:46,653 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration3_Loop [2021-12-14 23:11:46,653 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:46,653 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:46,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:46,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:46,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:46,693 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:46,693 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:11:46,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:46,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:46,703 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:46,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-14 23:11:46,705 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:11:46,706 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:46,713 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:11:46,713 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0#1=0} Honda state: {ULTIMATE.start_main_~s__hit~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:11:46,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:46,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:46,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:46,729 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:46,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-14 23:11:46,734 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:11:46,734 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:46,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:46,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:46,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:46,775 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:46,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-14 23:11:46,779 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:11:46,779 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:46,811 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:11:46,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-12-14 23:11:46,827 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:46,827 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:46,827 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:46,827 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:46,827 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:11:46,827 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:46,827 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:46,828 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:46,828 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration3_Loop [2021-12-14 23:11:46,828 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:46,828 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:46,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:46,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:46,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:46,899 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:46,899 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:11:46,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:46,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:46,903 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:46,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-14 23:11:46,905 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:11:46,911 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:11:46,911 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:11:46,911 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:11:46,911 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:11:46,912 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:11:46,914 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:11:46,914 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:11:46,934 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:11:46,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-12-14 23:11:46,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:46,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:46,950 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:46,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-14 23:11:46,952 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:11:46,958 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:11:46,958 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:11:46,958 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:11:46,958 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:11:46,958 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:11:46,959 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:11:46,959 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:11:46,978 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:11:46,984 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:11:46,984 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:11:46,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:46,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:46,985 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:46,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-14 23:11:46,987 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:11:46,987 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:11:46,988 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:11:46,988 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = -1*ULTIMATE.start_main_~s__state~0#1 + 8504 Supporting invariants [] [2021-12-14 23:11:47,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:47,004 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:11:47,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:47,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:11:47,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:47,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:11:47,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:47,082 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 23:11:47,083 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 173 states and 261 transitions. cyclomatic complexity: 94 Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:47,205 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 173 states and 261 transitions. cyclomatic complexity: 94. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 574 states and 822 transitions. Complement of second has 7 states. [2021-12-14 23:11:47,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-14 23:11:47,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:47,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2021-12-14 23:11:47,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 84 transitions. Stem has 3 letters. Loop has 6 letters. [2021-12-14 23:11:47,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:47,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 84 transitions. Stem has 9 letters. Loop has 6 letters. [2021-12-14 23:11:47,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:47,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 84 transitions. Stem has 3 letters. Loop has 12 letters. [2021-12-14 23:11:47,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:47,207 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 574 states and 822 transitions. [2021-12-14 23:11:47,214 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 79 [2021-12-14 23:11:47,216 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 574 states to 406 states and 614 transitions. [2021-12-14 23:11:47,216 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 149 [2021-12-14 23:11:47,217 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 179 [2021-12-14 23:11:47,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 406 states and 614 transitions. [2021-12-14 23:11:47,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:47,217 INFO L681 BuchiCegarLoop]: Abstraction has 406 states and 614 transitions. [2021-12-14 23:11:47,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states and 614 transitions. [2021-12-14 23:11:47,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 238. [2021-12-14 23:11:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 238 states have (on average 1.4789915966386555) internal successors, (352), 237 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:47,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 352 transitions. [2021-12-14 23:11:47,224 INFO L704 BuchiCegarLoop]: Abstraction has 238 states and 352 transitions. [2021-12-14 23:11:47,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:11:47,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:11:47,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:11:47,224 INFO L87 Difference]: Start difference. First operand 238 states and 352 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:47,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:47,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:11:47,272 INFO L93 Difference]: Finished difference Result 153 states and 222 transitions. [2021-12-14 23:11:47,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:11:47,275 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 153 states and 222 transitions. [2021-12-14 23:11:47,276 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2021-12-14 23:11:47,277 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 153 states to 148 states and 217 transitions. [2021-12-14 23:11:47,277 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2021-12-14 23:11:47,278 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2021-12-14 23:11:47,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 148 states and 217 transitions. [2021-12-14 23:11:47,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:47,278 INFO L681 BuchiCegarLoop]: Abstraction has 148 states and 217 transitions. [2021-12-14 23:11:47,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states and 217 transitions. [2021-12-14 23:11:47,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-12-14 23:11:47,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 148 states have (on average 1.4662162162162162) internal successors, (217), 147 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:47,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 217 transitions. [2021-12-14 23:11:47,295 INFO L704 BuchiCegarLoop]: Abstraction has 148 states and 217 transitions. [2021-12-14 23:11:47,295 INFO L587 BuchiCegarLoop]: Abstraction has 148 states and 217 transitions. [2021-12-14 23:11:47,295 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-14 23:11:47,295 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 148 states and 217 transitions. [2021-12-14 23:11:47,296 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2021-12-14 23:11:47,296 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:11:47,296 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:11:47,297 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:47,297 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-14 23:11:47,297 INFO L791 eck$LassoCheckResult]: Stem: 2084#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 2051#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~s__verify_mode~0#1, main_~s__session__peer~0#1, main_~s__s3__tmp__new_cipher__algorithms~0#1, main_~buf~0#1, main_~cb~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~s__verify_mode~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~s__session__peer~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~s__s3__tmp__new_cipher__algorithms~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~buf~0#1;havoc main_~cb~0#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 2052#L188 assume !false; 2071#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2159#L41 assume 8466 == main_~s__state~0#1; 2156#L42 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 1; 2155#L90-1 main_~s__state~0#1 := 8496; 2153#L188 assume !false; 2074#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2129#L41 assume !(8466 == main_~s__state~0#1); 2128#L44 assume !(8496 == main_~s__state~0#1); 2028#L48 [2021-12-14 23:11:47,297 INFO L793 eck$LassoCheckResult]: Loop: 2028#L48 assume 8512 == main_~s__state~0#1; 2063#L49 main_~s__state~0#1 := 8528; 2023#L188 assume !false; 2112#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2110#L41 assume !(8466 == main_~s__state~0#1); 2109#L44 assume !(8496 == main_~s__state~0#1); 2028#L48 [2021-12-14 23:11:47,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:47,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1200039737, now seen corresponding path program 1 times [2021-12-14 23:11:47,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:47,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363020733] [2021-12-14 23:11:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:47,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:47,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:47,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:11:47,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363020733] [2021-12-14 23:11:47,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363020733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:11:47,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:11:47,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 23:11:47,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165333442] [2021-12-14 23:11:47,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:11:47,319 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 23:11:47,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:47,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1809521393, now seen corresponding path program 1 times [2021-12-14 23:11:47,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:47,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914010463] [2021-12-14 23:11:47,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:47,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:47,323 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:47,325 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:47,337 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:47,337 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:47,337 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:47,338 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:47,338 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:11:47,338 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:47,338 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:47,338 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:47,338 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration4_Loop [2021-12-14 23:11:47,338 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:47,338 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:47,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:47,361 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:47,361 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:11:47,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:47,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:47,362 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:47,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-14 23:11:47,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:11:47,365 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:47,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-14 23:11:47,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:47,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:47,415 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:47,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-14 23:11:47,418 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:11:47,418 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:47,425 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:11:47,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:47,441 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:47,441 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:47,441 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:47,441 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:47,441 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:11:47,441 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:47,441 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:47,441 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:47,441 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration4_Loop [2021-12-14 23:11:47,441 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:47,441 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:47,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:47,462 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:47,462 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:11:47,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:47,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:47,463 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:47,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-14 23:11:47,472 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:11:47,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:11:47,478 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:11:47,478 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:11:47,478 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:11:47,478 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:11:47,479 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:11:47,479 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:11:47,495 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:11:47,497 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:11:47,497 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:11:47,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:47,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:47,498 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:47,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-14 23:11:47,500 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:11:47,501 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:11:47,501 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:11:47,501 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = -1*ULTIMATE.start_main_~s__state~0#1 + 8520 Supporting invariants [] [2021-12-14 23:11:47,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:47,517 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:11:47,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:47,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:11:47,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:47,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:11:47,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:47,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:47,604 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 23:11:47,604 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 148 states and 217 transitions. cyclomatic complexity: 77 Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:47,731 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 148 states and 217 transitions. cyclomatic complexity: 77. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 460 states and 687 transitions. Complement of second has 9 states. [2021-12-14 23:11:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-14 23:11:47,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:47,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2021-12-14 23:11:47,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 130 transitions. Stem has 11 letters. Loop has 6 letters. [2021-12-14 23:11:47,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:47,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 130 transitions. Stem has 17 letters. Loop has 6 letters. [2021-12-14 23:11:47,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:47,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 130 transitions. Stem has 11 letters. Loop has 12 letters. [2021-12-14 23:11:47,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:47,733 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 460 states and 687 transitions. [2021-12-14 23:11:47,735 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 62 [2021-12-14 23:11:47,736 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 460 states to 361 states and 555 transitions. [2021-12-14 23:11:47,737 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2021-12-14 23:11:47,737 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2021-12-14 23:11:47,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 361 states and 555 transitions. [2021-12-14 23:11:47,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:47,737 INFO L681 BuchiCegarLoop]: Abstraction has 361 states and 555 transitions. [2021-12-14 23:11:47,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states and 555 transitions. [2021-12-14 23:11:47,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 206. [2021-12-14 23:11:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 206 states have (on average 1.4757281553398058) internal successors, (304), 205 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:47,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 304 transitions. [2021-12-14 23:11:47,754 INFO L704 BuchiCegarLoop]: Abstraction has 206 states and 304 transitions. [2021-12-14 23:11:47,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:11:47,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:11:47,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:11:47,754 INFO L87 Difference]: Start difference. First operand 206 states and 304 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:47,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:11:47,786 INFO L93 Difference]: Finished difference Result 225 states and 313 transitions. [2021-12-14 23:11:47,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:11:47,787 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 225 states and 313 transitions. [2021-12-14 23:11:47,788 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 57 [2021-12-14 23:11:47,789 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 225 states to 210 states and 296 transitions. [2021-12-14 23:11:47,789 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 71 [2021-12-14 23:11:47,789 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 71 [2021-12-14 23:11:47,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 210 states and 296 transitions. [2021-12-14 23:11:47,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:47,789 INFO L681 BuchiCegarLoop]: Abstraction has 210 states and 296 transitions. [2021-12-14 23:11:47,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states and 296 transitions. [2021-12-14 23:11:47,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 199. [2021-12-14 23:11:47,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 199 states have (on average 1.4271356783919598) internal successors, (284), 198 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:47,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 284 transitions. [2021-12-14 23:11:47,792 INFO L704 BuchiCegarLoop]: Abstraction has 199 states and 284 transitions. [2021-12-14 23:11:47,792 INFO L587 BuchiCegarLoop]: Abstraction has 199 states and 284 transitions. [2021-12-14 23:11:47,792 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-14 23:11:47,792 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 199 states and 284 transitions. [2021-12-14 23:11:47,793 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2021-12-14 23:11:47,793 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:11:47,793 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:11:47,793 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:47,793 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:47,793 INFO L791 eck$LassoCheckResult]: Stem: 3203#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 3169#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~s__verify_mode~0#1, main_~s__session__peer~0#1, main_~s__s3__tmp__new_cipher__algorithms~0#1, main_~buf~0#1, main_~cb~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~s__verify_mode~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~s__session__peer~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~s__s3__tmp__new_cipher__algorithms~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~buf~0#1;havoc main_~cb~0#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 3170#L188 assume !false; 3331#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3223#L41 assume 8466 == main_~s__state~0#1; 3224#L42 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 1; 3333#L90-1 main_~s__state~0#1 := 8496; 3193#L188 assume !false; 3194#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3198#L41 assume !(8466 == main_~s__state~0#1); 3271#L44 assume 8496 == main_~s__state~0#1; 3270#L45 assume !(1 == main_~blastFlag~0#1); 3269#L97-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 3267#L188 assume !false; 3266#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3265#L41 assume !(8466 == main_~s__state~0#1); 3145#L44 assume !(8496 == main_~s__state~0#1); 3146#L48 assume !(8512 == main_~s__state~0#1); 3190#L52 [2021-12-14 23:11:47,794 INFO L793 eck$LassoCheckResult]: Loop: 3190#L52 assume 8528 == main_~s__state~0#1; 3229#L53 main_~s__state~0#1 := 8544; 3141#L188 assume !false; 3251#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3248#L41 assume !(8466 == main_~s__state~0#1); 3246#L44 assume !(8496 == main_~s__state~0#1); 3243#L48 assume !(8512 == main_~s__state~0#1); 3190#L52 [2021-12-14 23:11:47,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:47,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1540003514, now seen corresponding path program 1 times [2021-12-14 23:11:47,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:47,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280019952] [2021-12-14 23:11:47,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:47,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:47,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:11:47,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280019952] [2021-12-14 23:11:47,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280019952] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:11:47,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:11:47,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:11:47,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734695933] [2021-12-14 23:11:47,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:11:47,831 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 23:11:47,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:47,831 INFO L85 PathProgramCache]: Analyzing trace with hash 460397777, now seen corresponding path program 1 times [2021-12-14 23:11:47,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:47,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516460162] [2021-12-14 23:11:47,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:47,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:47,835 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:47,841 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:47,856 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:47,856 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:47,857 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:47,857 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:47,857 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:11:47,857 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:47,857 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:47,857 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:47,857 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration5_Loop [2021-12-14 23:11:47,857 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:47,857 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:47,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:47,869 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:47,870 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:11:47,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:47,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:47,871 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:47,878 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:11:47,878 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:47,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-14 23:11:47,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:47,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:47,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:47,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:47,931 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:47,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-14 23:11:47,932 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:11:47,933 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:47,954 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:11:47,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:47,988 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:47,988 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:47,988 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:47,988 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:47,988 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:11:47,988 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:47,988 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:47,988 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:47,988 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration5_Loop [2021-12-14 23:11:47,988 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:47,988 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:47,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:48,002 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:48,003 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:11:48,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:48,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:48,016 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:48,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-14 23:11:48,018 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:11:48,024 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:11:48,024 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:11:48,024 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:11:48,024 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:11:48,024 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:11:48,026 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:11:48,026 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:11:48,039 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:11:48,041 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:11:48,041 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:11:48,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:48,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:48,043 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:48,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-14 23:11:48,045 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:11:48,045 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:11:48,045 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:11:48,045 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = -1*ULTIMATE.start_main_~s__state~0#1 + 8536 Supporting invariants [] [2021-12-14 23:11:48,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:48,064 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:11:48,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:48,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:11:48,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:48,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:11:48,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:48,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:48,153 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 23:11:48,153 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 199 states and 284 transitions. cyclomatic complexity: 93 Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:48,271 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 199 states and 284 transitions. cyclomatic complexity: 93. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 529 states and 778 transitions. Complement of second has 9 states. [2021-12-14 23:11:48,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-14 23:11:48,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:48,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2021-12-14 23:11:48,273 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 135 transitions. Stem has 18 letters. Loop has 7 letters. [2021-12-14 23:11:48,273 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:48,273 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 135 transitions. Stem has 25 letters. Loop has 7 letters. [2021-12-14 23:11:48,273 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:48,273 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 135 transitions. Stem has 18 letters. Loop has 14 letters. [2021-12-14 23:11:48,274 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:48,274 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 529 states and 778 transitions. [2021-12-14 23:11:48,277 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 80 [2021-12-14 23:11:48,279 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 529 states to 438 states and 654 transitions. [2021-12-14 23:11:48,279 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 125 [2021-12-14 23:11:48,279 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 158 [2021-12-14 23:11:48,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 438 states and 654 transitions. [2021-12-14 23:11:48,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:48,280 INFO L681 BuchiCegarLoop]: Abstraction has 438 states and 654 transitions. [2021-12-14 23:11:48,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states and 654 transitions. [2021-12-14 23:11:48,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 285. [2021-12-14 23:11:48,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 285 states have (on average 1.4280701754385965) internal successors, (407), 284 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:48,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 407 transitions. [2021-12-14 23:11:48,283 INFO L704 BuchiCegarLoop]: Abstraction has 285 states and 407 transitions. [2021-12-14 23:11:48,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:11:48,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:11:48,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:11:48,284 INFO L87 Difference]: Start difference. First operand 285 states and 407 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:48,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:11:48,293 INFO L93 Difference]: Finished difference Result 342 states and 464 transitions. [2021-12-14 23:11:48,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:11:48,294 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 342 states and 464 transitions. [2021-12-14 23:11:48,295 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 70 [2021-12-14 23:11:48,297 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 342 states to 342 states and 464 transitions. [2021-12-14 23:11:48,297 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 105 [2021-12-14 23:11:48,297 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 105 [2021-12-14 23:11:48,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 464 transitions. [2021-12-14 23:11:48,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:48,297 INFO L681 BuchiCegarLoop]: Abstraction has 342 states and 464 transitions. [2021-12-14 23:11:48,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 464 transitions. [2021-12-14 23:11:48,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2021-12-14 23:11:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 342 states have (on average 1.3567251461988303) internal successors, (464), 341 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:48,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 464 transitions. [2021-12-14 23:11:48,300 INFO L704 BuchiCegarLoop]: Abstraction has 342 states and 464 transitions. [2021-12-14 23:11:48,300 INFO L587 BuchiCegarLoop]: Abstraction has 342 states and 464 transitions. [2021-12-14 23:11:48,300 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-14 23:11:48,300 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 342 states and 464 transitions. [2021-12-14 23:11:48,301 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 70 [2021-12-14 23:11:48,301 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:11:48,301 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:11:48,302 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:48,302 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:48,302 INFO L791 eck$LassoCheckResult]: Stem: 4662#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 4627#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~s__verify_mode~0#1, main_~s__session__peer~0#1, main_~s__s3__tmp__new_cipher__algorithms~0#1, main_~buf~0#1, main_~cb~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~s__verify_mode~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~s__session__peer~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~s__s3__tmp__new_cipher__algorithms~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~buf~0#1;havoc main_~cb~0#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 4628#L188 assume !false; 4649#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 4680#L41 assume 8466 == main_~s__state~0#1; 4681#L42 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 1; 4853#L90-1 main_~s__state~0#1 := 8496; 4851#L188 assume !false; 4849#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 4847#L41 assume !(8466 == main_~s__state~0#1); 4843#L44 assume 8496 == main_~s__state~0#1; 4838#L45 assume 1 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 4837#L97-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 4834#L188 assume !false; 4832#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 4829#L41 assume !(8466 == main_~s__state~0#1); 4826#L44 assume !(8496 == main_~s__state~0#1); 4827#L48 assume !(8512 == main_~s__state~0#1); 4653#L52 assume !(8528 == main_~s__state~0#1); 4609#L56 [2021-12-14 23:11:48,302 INFO L793 eck$LassoCheckResult]: Loop: 4609#L56 assume 8544 == main_~s__state~0#1; 4610#L57 assume !(0 != 1 + main_~s__verify_mode~0#1);main_~s__state~0#1 := 8560; 4599#L188 assume !false; 4701#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 4699#L41 assume !(8466 == main_~s__state~0#1); 4697#L44 assume !(8496 == main_~s__state~0#1); 4695#L48 assume !(8512 == main_~s__state~0#1); 4694#L52 assume !(8528 == main_~s__state~0#1); 4609#L56 [2021-12-14 23:11:48,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:48,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1304815340, now seen corresponding path program 1 times [2021-12-14 23:11:48,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:48,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363717716] [2021-12-14 23:11:48,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:48,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:48,307 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:48,312 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:48,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:48,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1040610643, now seen corresponding path program 1 times [2021-12-14 23:11:48,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:48,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314202366] [2021-12-14 23:11:48,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:48,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:48,315 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:48,317 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:48,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:48,317 INFO L85 PathProgramCache]: Analyzing trace with hash 290150040, now seen corresponding path program 1 times [2021-12-14 23:11:48,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:48,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50357752] [2021-12-14 23:11:48,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:48,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 23:11:48,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:11:48,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50357752] [2021-12-14 23:11:48,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50357752] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:11:48,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:11:48,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:11:48,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127448900] [2021-12-14 23:11:48,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:11:48,368 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:48,368 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:48,368 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:48,368 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:48,368 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:11:48,368 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:48,368 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:48,368 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:48,368 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration6_Loop [2021-12-14 23:11:48,369 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:48,369 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:48,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:48,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:48,385 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:48,385 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:11:48,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:48,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:48,387 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:48,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-14 23:11:48,389 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:11:48,389 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:48,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:48,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:48,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:48,419 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:48,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-14 23:11:48,421 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:11:48,421 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:48,437 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:11:48,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:48,453 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:48,453 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:48,453 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:48,453 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:48,453 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:11:48,453 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:48,453 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:48,453 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:48,453 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration6_Loop [2021-12-14 23:11:48,453 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:48,454 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:48,454 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:48,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:48,482 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:48,482 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:11:48,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:48,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:48,512 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:48,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-14 23:11:48,515 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:11:48,521 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:11:48,521 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:11:48,521 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:11:48,521 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:11:48,521 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:11:48,522 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:11:48,522 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:11:48,533 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:11:48,535 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:11:48,535 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:11:48,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:48,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:48,536 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:48,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-14 23:11:48,538 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:11:48,538 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:11:48,538 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:11:48,538 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = -1*ULTIMATE.start_main_~s__state~0#1 + 8552 Supporting invariants [] [2021-12-14 23:11:48,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:48,555 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:11:48,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:48,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:11:48,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:48,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:11:48,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:48,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:48,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:48,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:48,700 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 23:11:48,700 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 342 states and 464 transitions. cyclomatic complexity: 134 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:48,814 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 342 states and 464 transitions. cyclomatic complexity: 134. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 692 states and 980 transitions. Complement of second has 9 states. [2021-12-14 23:11:48,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-14 23:11:48,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:48,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2021-12-14 23:11:48,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 142 transitions. Stem has 19 letters. Loop has 8 letters. [2021-12-14 23:11:48,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:48,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 142 transitions. Stem has 27 letters. Loop has 8 letters. [2021-12-14 23:11:48,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:48,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 142 transitions. Stem has 19 letters. Loop has 16 letters. [2021-12-14 23:11:48,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:48,816 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 692 states and 980 transitions. [2021-12-14 23:11:48,819 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 98 [2021-12-14 23:11:48,821 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 692 states to 609 states and 865 transitions. [2021-12-14 23:11:48,821 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 164 [2021-12-14 23:11:48,821 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 193 [2021-12-14 23:11:48,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 609 states and 865 transitions. [2021-12-14 23:11:48,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:48,822 INFO L681 BuchiCegarLoop]: Abstraction has 609 states and 865 transitions. [2021-12-14 23:11:48,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states and 865 transitions. [2021-12-14 23:11:48,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 469. [2021-12-14 23:11:48,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 469 states have (on average 1.3773987206823028) internal successors, (646), 468 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 646 transitions. [2021-12-14 23:11:48,827 INFO L704 BuchiCegarLoop]: Abstraction has 469 states and 646 transitions. [2021-12-14 23:11:48,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:11:48,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:11:48,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:11:48,828 INFO L87 Difference]: Start difference. First operand 469 states and 646 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:48,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:11:48,875 INFO L93 Difference]: Finished difference Result 583 states and 762 transitions. [2021-12-14 23:11:48,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:11:48,875 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 583 states and 762 transitions. [2021-12-14 23:11:48,877 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 100 [2021-12-14 23:11:48,879 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 583 states to 547 states and 726 transitions. [2021-12-14 23:11:48,879 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 169 [2021-12-14 23:11:48,880 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 173 [2021-12-14 23:11:48,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 547 states and 726 transitions. [2021-12-14 23:11:48,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:48,880 INFO L681 BuchiCegarLoop]: Abstraction has 547 states and 726 transitions. [2021-12-14 23:11:48,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states and 726 transitions. [2021-12-14 23:11:48,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 493. [2021-12-14 23:11:48,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 493 states have (on average 1.359026369168357) internal successors, (670), 492 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 670 transitions. [2021-12-14 23:11:48,885 INFO L704 BuchiCegarLoop]: Abstraction has 493 states and 670 transitions. [2021-12-14 23:11:48,885 INFO L587 BuchiCegarLoop]: Abstraction has 493 states and 670 transitions. [2021-12-14 23:11:48,886 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-14 23:11:48,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 493 states and 670 transitions. [2021-12-14 23:11:48,887 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 98 [2021-12-14 23:11:48,887 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:11:48,887 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:11:48,888 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:48,888 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:48,888 INFO L791 eck$LassoCheckResult]: Stem: 6857#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 6823#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~s__verify_mode~0#1, main_~s__session__peer~0#1, main_~s__s3__tmp__new_cipher__algorithms~0#1, main_~buf~0#1, main_~cb~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~s__verify_mode~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~s__session__peer~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~s__s3__tmp__new_cipher__algorithms~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~buf~0#1;havoc main_~cb~0#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 6824#L188 assume !false; 7173#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 7172#L41 assume 8466 == main_~s__state~0#1; 7171#L42 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 1; 7169#L90-1 main_~s__state~0#1 := 8496; 7168#L188 assume !false; 7166#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 7164#L41 assume !(8466 == main_~s__state~0#1); 7162#L44 assume 8496 == main_~s__state~0#1; 7153#L45 assume 1 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 7149#L97-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 6845#L188 [2021-12-14 23:11:48,888 INFO L793 eck$LassoCheckResult]: Loop: 6845#L188 assume !false; 6846#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 6851#L41 assume !(8466 == main_~s__state~0#1); 6800#L44 assume !(8496 == main_~s__state~0#1); 6801#L48 assume !(8512 == main_~s__state~0#1); 6849#L52 assume !(8528 == main_~s__state~0#1); 6807#L56 assume !(8544 == main_~s__state~0#1); 6808#L60 assume !(8560 == main_~s__state~0#1); 6858#L64 assume !(8576 == main_~s__state~0#1); 6859#L68 assume !(8592 == main_~s__state~0#1); 6868#L72 assume !(8608 == main_~s__state~0#1); 6880#L76 assume !(8640 == main_~s__state~0#1); 6829#L80 assume 8656 == main_~s__state~0#1; 6830#L81 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 6862#L174-1 main_~s__state~0#1 := 8672; 6845#L188 [2021-12-14 23:11:48,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:48,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2108014467, now seen corresponding path program 1 times [2021-12-14 23:11:48,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:48,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402841927] [2021-12-14 23:11:48,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:48,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:48,893 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:48,897 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:48,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:48,897 INFO L85 PathProgramCache]: Analyzing trace with hash -318790614, now seen corresponding path program 1 times [2021-12-14 23:11:48,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:48,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059710763] [2021-12-14 23:11:48,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:48,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:48,900 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:48,902 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:48,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:48,903 INFO L85 PathProgramCache]: Analyzing trace with hash -444277714, now seen corresponding path program 1 times [2021-12-14 23:11:48,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:48,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874996162] [2021-12-14 23:11:48,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:48,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:48,907 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:48,912 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:48,937 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:48,937 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:48,937 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:48,937 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:48,937 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:11:48,937 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:48,937 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:48,938 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:48,938 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration7_Loop [2021-12-14 23:11:48,938 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:48,938 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:48,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:48,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:48,961 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:48,961 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:11:48,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:48,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:48,968 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:48,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-12-14 23:11:48,970 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:11:48,970 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:49,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:49,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:49,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:49,005 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:49,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-12-14 23:11:49,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:11:49,008 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:49,016 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:11:49,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:49,034 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:49,034 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:49,034 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:49,034 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:49,034 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:11:49,034 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:49,034 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:49,034 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:49,034 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration7_Loop [2021-12-14 23:11:49,034 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:49,034 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:49,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:49,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:49,064 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:49,065 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:11:49,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:49,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:49,066 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:49,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-12-14 23:11:49,068 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:11:49,074 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:11:49,074 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:11:49,074 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:11:49,074 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:11:49,074 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:11:49,075 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:11:49,075 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:11:49,081 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:11:49,083 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:11:49,083 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:11:49,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:49,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:49,084 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:49,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-12-14 23:11:49,085 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:11:49,086 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:11:49,086 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:11:49,086 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~blastFlag~0#1) = -2*ULTIMATE.start_main_~blastFlag~0#1 + 5 Supporting invariants [] [2021-12-14 23:11:49,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:49,103 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:11:49,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:49,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:11:49,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:49,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:11:49,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:49,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:49,229 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-14 23:11:49,229 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 493 states and 670 transitions. cyclomatic complexity: 193 Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:49,264 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 493 states and 670 transitions. cyclomatic complexity: 193. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 751 states and 1024 transitions. Complement of second has 4 states. [2021-12-14 23:11:49,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-14 23:11:49,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:49,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2021-12-14 23:11:49,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 129 transitions. Stem has 13 letters. Loop has 15 letters. [2021-12-14 23:11:49,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:49,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 129 transitions. Stem has 28 letters. Loop has 15 letters. [2021-12-14 23:11:49,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:49,267 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 129 transitions. Stem has 13 letters. Loop has 30 letters. [2021-12-14 23:11:49,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:49,267 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 751 states and 1024 transitions. [2021-12-14 23:11:49,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:49,272 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 155 [2021-12-14 23:11:49,274 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 751 states to 684 states and 933 transitions. [2021-12-14 23:11:49,274 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 205 [2021-12-14 23:11:49,274 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 208 [2021-12-14 23:11:49,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 684 states and 933 transitions. [2021-12-14 23:11:49,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:49,276 INFO L681 BuchiCegarLoop]: Abstraction has 684 states and 933 transitions. [2021-12-14 23:11:49,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states and 933 transitions. [2021-12-14 23:11:49,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 678. [2021-12-14 23:11:49,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 678 states have (on average 1.3657817109144543) internal successors, (926), 677 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 926 transitions. [2021-12-14 23:11:49,283 INFO L704 BuchiCegarLoop]: Abstraction has 678 states and 926 transitions. [2021-12-14 23:11:49,283 INFO L587 BuchiCegarLoop]: Abstraction has 678 states and 926 transitions. [2021-12-14 23:11:49,284 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-14 23:11:49,284 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 678 states and 926 transitions. [2021-12-14 23:11:49,286 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 155 [2021-12-14 23:11:49,286 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:11:49,286 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:11:49,287 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:49,287 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:49,287 INFO L791 eck$LassoCheckResult]: Stem: 8214#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 8170#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~s__verify_mode~0#1, main_~s__session__peer~0#1, main_~s__s3__tmp__new_cipher__algorithms~0#1, main_~buf~0#1, main_~cb~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~s__verify_mode~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~s__session__peer~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~s__s3__tmp__new_cipher__algorithms~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~buf~0#1;havoc main_~cb~0#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 8171#L188 assume !false; 8474#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 8460#L41 assume 8466 == main_~s__state~0#1; 8459#L42 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 1; 8457#L90-1 main_~s__state~0#1 := 8496; 8456#L188 assume !false; 8455#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 8454#L41 assume !(8466 == main_~s__state~0#1); 8443#L44 assume 8496 == main_~s__state~0#1; 8437#L45 assume 1 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 8435#L97-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 8278#L188 assume !false; 8525#L35 [2021-12-14 23:11:49,287 INFO L793 eck$LassoCheckResult]: Loop: 8525#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 8523#L41 assume !(8466 == main_~s__state~0#1); 8479#L44 assume !(8496 == main_~s__state~0#1); 8477#L48 assume !(8512 == main_~s__state~0#1); 8475#L52 assume !(8528 == main_~s__state~0#1); 8476#L56 assume !(8544 == main_~s__state~0#1); 8514#L60 assume !(8560 == main_~s__state~0#1); 8512#L64 assume !(8576 == main_~s__state~0#1); 8511#L68 assume !(8592 == main_~s__state~0#1); 8510#L72 assume !(8608 == main_~s__state~0#1); 8471#L76 assume !(8640 == main_~s__state~0#1); 8468#L80 assume 8656 == main_~s__state~0#1; 8219#L81 assume !(2 == main_~blastFlag~0#1); 8220#L174-1 main_~s__state~0#1 := 8672; 8212#L188 assume !false; 8525#L35 [2021-12-14 23:11:49,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:49,287 INFO L85 PathProgramCache]: Analyzing trace with hash -923939026, now seen corresponding path program 2 times [2021-12-14 23:11:49,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:49,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983038339] [2021-12-14 23:11:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:49,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:49,296 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:49,308 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:49,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:49,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1835507732, now seen corresponding path program 1 times [2021-12-14 23:11:49,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:49,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209038674] [2021-12-14 23:11:49,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:49,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:49,311 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:49,313 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:49,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:49,313 INFO L85 PathProgramCache]: Analyzing trace with hash -887705313, now seen corresponding path program 1 times [2021-12-14 23:11:49,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:49,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376191156] [2021-12-14 23:11:49,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:49,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:49,356 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 23:11:49,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:11:49,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376191156] [2021-12-14 23:11:49,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376191156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:11:49,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:11:49,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:11:49,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718531968] [2021-12-14 23:11:49,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:11:49,380 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:49,380 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:49,380 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:49,380 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:49,380 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:11:49,380 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:49,380 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:49,380 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:49,381 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration8_Loop [2021-12-14 23:11:49,381 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:49,381 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:49,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:49,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:49,399 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:49,399 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:11:49,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:49,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:49,400 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:49,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-12-14 23:11:49,402 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:11:49,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:49,412 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:11:49,412 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~blastFlag~0#1=3} Honda state: {ULTIMATE.start_main_~blastFlag~0#1=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:11:49,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-12-14 23:11:49,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:49,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:49,427 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:49,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-12-14 23:11:49,435 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:11:49,435 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:49,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-12-14 23:11:49,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:49,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:49,457 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:49,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-12-14 23:11:49,459 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:11:49,459 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:49,467 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:11:49,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-12-14 23:11:49,481 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:49,481 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:49,481 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:49,481 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:49,481 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:11:49,481 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:49,481 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:49,481 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:49,481 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration8_Loop [2021-12-14 23:11:49,481 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:49,481 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:49,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:49,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:49,507 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:49,507 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:11:49,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:49,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:49,508 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:49,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-12-14 23:11:49,510 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:11:49,515 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:11:49,515 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:11:49,515 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:11:49,516 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-14 23:11:49,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:11:49,517 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-14 23:11:49,517 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:11:49,533 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:11:49,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:49,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:49,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:49,562 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:49,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-12-14 23:11:49,565 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:11:49,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:11:49,570 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:11:49,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:11:49,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:11:49,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:11:49,572 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:11:49,572 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:11:49,582 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:11:49,583 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:11:49,583 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:11:49,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:49,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:49,585 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:49,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-12-14 23:11:49,586 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:11:49,586 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:11:49,586 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:11:49,586 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = -1*ULTIMATE.start_main_~s__state~0#1 + 8664 Supporting invariants [] [2021-12-14 23:11:49,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:49,601 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:11:49,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:49,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:11:49,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:49,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:11:49,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:49,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:49,728 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 23:11:49,728 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 678 states and 926 transitions. cyclomatic complexity: 267 Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:49,823 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 678 states and 926 transitions. cyclomatic complexity: 267. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1562 states and 2071 transitions. Complement of second has 9 states. [2021-12-14 23:11:49,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-14 23:11:49,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2021-12-14 23:11:49,824 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 99 transitions. Stem has 14 letters. Loop has 15 letters. [2021-12-14 23:11:49,824 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:49,825 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 99 transitions. Stem has 29 letters. Loop has 15 letters. [2021-12-14 23:11:49,825 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:49,825 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 99 transitions. Stem has 14 letters. Loop has 30 letters. [2021-12-14 23:11:49,825 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:49,825 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1562 states and 2071 transitions. [2021-12-14 23:11:49,830 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 190 [2021-12-14 23:11:49,834 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1562 states to 1337 states and 1769 transitions. [2021-12-14 23:11:49,834 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 280 [2021-12-14 23:11:49,835 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 291 [2021-12-14 23:11:49,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1337 states and 1769 transitions. [2021-12-14 23:11:49,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:49,835 INFO L681 BuchiCegarLoop]: Abstraction has 1337 states and 1769 transitions. [2021-12-14 23:11:49,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states and 1769 transitions. [2021-12-14 23:11:49,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1292. [2021-12-14 23:11:49,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 1292 states have (on average 1.3212074303405572) internal successors, (1707), 1291 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:49,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1707 transitions. [2021-12-14 23:11:49,848 INFO L704 BuchiCegarLoop]: Abstraction has 1292 states and 1707 transitions. [2021-12-14 23:11:49,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:11:49,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:11:49,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:11:49,848 INFO L87 Difference]: Start difference. First operand 1292 states and 1707 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:49,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:11:49,868 INFO L93 Difference]: Finished difference Result 1457 states and 1909 transitions. [2021-12-14 23:11:49,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:11:49,868 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1457 states and 1909 transitions. [2021-12-14 23:11:49,873 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 301 [2021-12-14 23:11:49,877 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1457 states to 1274 states and 1665 transitions. [2021-12-14 23:11:49,877 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 359 [2021-12-14 23:11:49,877 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 374 [2021-12-14 23:11:49,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1274 states and 1665 transitions. [2021-12-14 23:11:49,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:49,878 INFO L681 BuchiCegarLoop]: Abstraction has 1274 states and 1665 transitions. [2021-12-14 23:11:49,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states and 1665 transitions. [2021-12-14 23:11:49,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1262. [2021-12-14 23:11:49,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1262 states have (on average 1.309825673534073) internal successors, (1653), 1261 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:49,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1653 transitions. [2021-12-14 23:11:49,925 INFO L704 BuchiCegarLoop]: Abstraction has 1262 states and 1653 transitions. [2021-12-14 23:11:49,925 INFO L587 BuchiCegarLoop]: Abstraction has 1262 states and 1653 transitions. [2021-12-14 23:11:49,925 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-14 23:11:49,926 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1262 states and 1653 transitions. [2021-12-14 23:11:49,928 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 301 [2021-12-14 23:11:49,933 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:11:49,933 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:11:49,934 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:49,934 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:49,934 INFO L791 eck$LassoCheckResult]: Stem: 13316#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 13275#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~s__verify_mode~0#1, main_~s__session__peer~0#1, main_~s__s3__tmp__new_cipher__algorithms~0#1, main_~buf~0#1, main_~cb~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~s__verify_mode~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~s__session__peer~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~s__s3__tmp__new_cipher__algorithms~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~buf~0#1;havoc main_~cb~0#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 13276#L188 assume !false; 13796#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 13797#L41 assume 8466 == main_~s__state~0#1; 14132#L42 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 1; 14129#L90-1 main_~s__state~0#1 := 8496; 13300#L188 assume !false; 13301#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 14498#L41 assume !(8466 == main_~s__state~0#1); 14497#L44 assume 8496 == main_~s__state~0#1; 14496#L45 assume 1 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 13345#L97-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 13891#L188 assume !false; 13304#L35 [2021-12-14 23:11:49,934 INFO L793 eck$LassoCheckResult]: Loop: 13304#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 13305#L41 assume !(8466 == main_~s__state~0#1); 13254#L44 assume !(8496 == main_~s__state~0#1); 13255#L48 assume !(8512 == main_~s__state~0#1); 13339#L52 assume !(8528 == main_~s__state~0#1); 13260#L56 assume !(8544 == main_~s__state~0#1); 13261#L60 assume !(8560 == main_~s__state~0#1); 13317#L64 assume !(8576 == main_~s__state~0#1); 13318#L68 assume !(8592 == main_~s__state~0#1); 13328#L72 assume !(8608 == main_~s__state~0#1); 13351#L76 assume !(8640 == main_~s__state~0#1); 13359#L80 assume !(8656 == main_~s__state~0#1); 13574#L84 assume 8672 == main_~s__state~0#1; 13572#L85 assume !(4 == main_~blastFlag~0#1); 13570#L184 assume !(5 == main_~blastFlag~0#1); 13346#L181-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 13347#L188 assume !false; 13590#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 13588#L41 assume !(8466 == main_~s__state~0#1); 13586#L44 assume 8496 == main_~s__state~0#1; 13587#L45 assume !(1 == main_~blastFlag~0#1); 13591#L97-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 13313#L188 assume !false; 13304#L35 [2021-12-14 23:11:49,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:49,935 INFO L85 PathProgramCache]: Analyzing trace with hash -923939026, now seen corresponding path program 3 times [2021-12-14 23:11:49,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:49,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469616336] [2021-12-14 23:11:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:49,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:49,939 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:49,942 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:49,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:49,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1607513209, now seen corresponding path program 1 times [2021-12-14 23:11:49,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:49,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895299334] [2021-12-14 23:11:49,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:49,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:49,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:49,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:49,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:11:49,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895299334] [2021-12-14 23:11:49,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895299334] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:11:49,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:11:49,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:11:49,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962578086] [2021-12-14 23:11:49,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:11:49,957 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:11:49,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:11:49,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:11:49,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:11:49,958 INFO L87 Difference]: Start difference. First operand 1262 states and 1653 transitions. cyclomatic complexity: 420 Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:49,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:11:50,000 INFO L93 Difference]: Finished difference Result 1036 states and 1257 transitions. [2021-12-14 23:11:50,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:11:50,000 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1036 states and 1257 transitions. [2021-12-14 23:11:50,004 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 202 [2021-12-14 23:11:50,006 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1036 states to 654 states and 800 transitions. [2021-12-14 23:11:50,006 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 257 [2021-12-14 23:11:50,006 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 261 [2021-12-14 23:11:50,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 654 states and 800 transitions. [2021-12-14 23:11:50,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:50,007 INFO L681 BuchiCegarLoop]: Abstraction has 654 states and 800 transitions. [2021-12-14 23:11:50,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states and 800 transitions. [2021-12-14 23:11:50,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 651. [2021-12-14 23:11:50,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 651 states have (on average 1.2211981566820276) internal successors, (795), 650 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:50,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 795 transitions. [2021-12-14 23:11:50,013 INFO L704 BuchiCegarLoop]: Abstraction has 651 states and 795 transitions. [2021-12-14 23:11:50,013 INFO L587 BuchiCegarLoop]: Abstraction has 651 states and 795 transitions. [2021-12-14 23:11:50,013 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-14 23:11:50,013 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 651 states and 795 transitions. [2021-12-14 23:11:50,015 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 202 [2021-12-14 23:11:50,015 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:11:50,015 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:11:50,016 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:50,016 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:50,016 INFO L791 eck$LassoCheckResult]: Stem: 15621#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 15578#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~s__verify_mode~0#1, main_~s__session__peer~0#1, main_~s__s3__tmp__new_cipher__algorithms~0#1, main_~buf~0#1, main_~cb~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~s__verify_mode~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~s__session__peer~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~s__s3__tmp__new_cipher__algorithms~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~buf~0#1;havoc main_~cb~0#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 15579#L188 assume !false; 15874#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 15871#L41 assume 8466 == main_~s__state~0#1; 15869#L42 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 1; 15630#L90-1 main_~s__state~0#1 := 8496; 15600#L188 assume !false; 15601#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 16161#L41 assume !(8466 == main_~s__state~0#1); 16159#L44 assume 8496 == main_~s__state~0#1; 16157#L45 assume 1 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 16156#L97-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 15614#L188 assume !false; 16039#L35 [2021-12-14 23:11:50,016 INFO L793 eck$LassoCheckResult]: Loop: 16039#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 16038#L41 assume !(8466 == main_~s__state~0#1); 16037#L44 assume !(8496 == main_~s__state~0#1); 16036#L48 assume !(8512 == main_~s__state~0#1); 16012#L52 assume !(8528 == main_~s__state~0#1); 16011#L56 assume !(8544 == main_~s__state~0#1); 16009#L60 assume !(8560 == main_~s__state~0#1); 16006#L64 assume !(8576 == main_~s__state~0#1); 16007#L68 assume !(8592 == main_~s__state~0#1); 16017#L72 assume !(8608 == main_~s__state~0#1); 15985#L76 assume !(8640 == main_~s__state~0#1); 15984#L80 assume !(8656 == main_~s__state~0#1); 15615#L84 assume 8672 == main_~s__state~0#1; 15568#L85 assume !(4 == main_~blastFlag~0#1); 15569#L184 assume !(5 == main_~blastFlag~0#1); 15598#L181-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 15648#L188 assume !false; 16035#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 16034#L41 assume !(8466 == main_~s__state~0#1); 16033#L44 assume !(8496 == main_~s__state~0#1); 16031#L48 assume !(8512 == main_~s__state~0#1); 16029#L52 assume !(8528 == main_~s__state~0#1); 16027#L56 assume !(8544 == main_~s__state~0#1); 16025#L60 assume !(8560 == main_~s__state~0#1); 16023#L64 assume !(8576 == main_~s__state~0#1); 16004#L68 assume !(8592 == main_~s__state~0#1); 15987#L72 assume !(8608 == main_~s__state~0#1); 15988#L76 assume 8640 == main_~s__state~0#1; 15580#L77 assume !(3 == main_~blastFlag~0#1); 15581#L163-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8656; 16041#L188 assume !false; 16039#L35 [2021-12-14 23:11:50,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:50,017 INFO L85 PathProgramCache]: Analyzing trace with hash -923939026, now seen corresponding path program 4 times [2021-12-14 23:11:50,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:50,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971069615] [2021-12-14 23:11:50,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:50,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:50,020 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:50,023 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:50,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:50,023 INFO L85 PathProgramCache]: Analyzing trace with hash 530770115, now seen corresponding path program 1 times [2021-12-14 23:11:50,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:50,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801561217] [2021-12-14 23:11:50,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:50,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:50,033 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:50,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:11:50,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801561217] [2021-12-14 23:11:50,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801561217] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:11:50,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:11:50,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:11:50,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179018796] [2021-12-14 23:11:50,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:11:50,034 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:11:50,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:11:50,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:11:50,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:11:50,035 INFO L87 Difference]: Start difference. First operand 651 states and 795 transitions. cyclomatic complexity: 166 Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:50,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:11:50,040 INFO L93 Difference]: Finished difference Result 634 states and 773 transitions. [2021-12-14 23:11:50,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:11:50,041 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 634 states and 773 transitions. [2021-12-14 23:11:50,043 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 170 [2021-12-14 23:11:50,044 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 634 states to 622 states and 758 transitions. [2021-12-14 23:11:50,044 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 247 [2021-12-14 23:11:50,045 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 247 [2021-12-14 23:11:50,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 622 states and 758 transitions. [2021-12-14 23:11:50,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:50,045 INFO L681 BuchiCegarLoop]: Abstraction has 622 states and 758 transitions. [2021-12-14 23:11:50,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states and 758 transitions. [2021-12-14 23:11:50,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 567. [2021-12-14 23:11:50,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 567 states have (on average 1.2380952380952381) internal successors, (702), 566 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:50,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 702 transitions. [2021-12-14 23:11:50,050 INFO L704 BuchiCegarLoop]: Abstraction has 567 states and 702 transitions. [2021-12-14 23:11:50,050 INFO L587 BuchiCegarLoop]: Abstraction has 567 states and 702 transitions. [2021-12-14 23:11:50,050 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-12-14 23:11:50,050 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 567 states and 702 transitions. [2021-12-14 23:11:50,052 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 146 [2021-12-14 23:11:50,052 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:11:50,052 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:11:50,052 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:50,052 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:50,052 INFO L791 eck$LassoCheckResult]: Stem: 16912#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 16869#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~s__verify_mode~0#1, main_~s__session__peer~0#1, main_~s__s3__tmp__new_cipher__algorithms~0#1, main_~buf~0#1, main_~cb~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~s__verify_mode~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~s__session__peer~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~s__s3__tmp__new_cipher__algorithms~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~buf~0#1;havoc main_~cb~0#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 16870#L188 assume !false; 17317#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 17318#L41 assume 8466 == main_~s__state~0#1; 17320#L42 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 1; 16921#L90-1 main_~s__state~0#1 := 8496; 16892#L188 assume !false; 16893#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 17395#L41 assume !(8466 == main_~s__state~0#1); 17394#L44 assume 8496 == main_~s__state~0#1; 17380#L45 assume 1 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 17381#L97-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 17146#L188 assume !false; 17278#L35 [2021-12-14 23:11:50,053 INFO L793 eck$LassoCheckResult]: Loop: 17278#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 17343#L41 assume !(8466 == main_~s__state~0#1); 17336#L44 assume !(8496 == main_~s__state~0#1); 16896#L48 assume !(8512 == main_~s__state~0#1); 16897#L52 assume !(8528 == main_~s__state~0#1); 16855#L56 assume !(8544 == main_~s__state~0#1); 16856#L60 assume !(8560 == main_~s__state~0#1); 16935#L64 assume !(8576 == main_~s__state~0#1); 17325#L68 assume !(8592 == main_~s__state~0#1); 17323#L72 assume !(8608 == main_~s__state~0#1); 17322#L76 assume !(8640 == main_~s__state~0#1); 17321#L80 assume !(8656 == main_~s__state~0#1); 16908#L84 assume 8672 == main_~s__state~0#1; 16859#L85 assume !(4 == main_~blastFlag~0#1); 16860#L184 assume !(5 == main_~blastFlag~0#1); 16885#L181-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 16943#L188 assume !false; 17278#L35 [2021-12-14 23:11:50,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:50,053 INFO L85 PathProgramCache]: Analyzing trace with hash -923939026, now seen corresponding path program 5 times [2021-12-14 23:11:50,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:50,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730675601] [2021-12-14 23:11:50,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:50,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:50,056 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:50,059 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:50,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:50,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1282190981, now seen corresponding path program 1 times [2021-12-14 23:11:50,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:50,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476123813] [2021-12-14 23:11:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:50,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:50,062 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:50,064 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:50,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:50,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1587248888, now seen corresponding path program 1 times [2021-12-14 23:11:50,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:50,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279752295] [2021-12-14 23:11:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:50,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:50,086 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 23:11:50,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:11:50,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279752295] [2021-12-14 23:11:50,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279752295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:11:50,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:11:50,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:11:50,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377779092] [2021-12-14 23:11:50,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:11:50,116 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:50,116 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:50,116 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:50,116 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:50,116 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:11:50,116 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:50,116 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:50,116 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:50,116 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration11_Loop [2021-12-14 23:11:50,116 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:50,117 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:50,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:50,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:50,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:50,155 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:50,155 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:11:50,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:50,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:50,156 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:50,167 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:11:50,167 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:50,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-12-14 23:11:50,183 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:11:50,183 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0#1=-1} Honda state: {ULTIMATE.start_main_~s__hit~0#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:11:50,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:50,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:50,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:50,199 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:50,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-12-14 23:11:50,201 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:11:50,201 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:50,211 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:11:50,211 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~blastFlag~0#1=6} Honda state: {ULTIMATE.start_main_~blastFlag~0#1=6} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:11:50,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:50,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:50,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:50,227 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:50,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-12-14 23:11:50,231 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:11:50,231 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:50,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:50,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:50,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:50,257 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:50,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-12-14 23:11:50,260 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:11:50,260 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:50,269 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:11:50,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-12-14 23:11:50,285 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:50,285 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:50,285 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:50,285 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:50,285 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:11:50,285 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:50,285 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:50,285 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:50,285 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration11_Loop [2021-12-14 23:11:50,285 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:50,285 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:50,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:50,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:50,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:50,330 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:50,330 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:11:50,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:50,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:50,331 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:50,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-12-14 23:11:50,333 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:11:50,339 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:11:50,340 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:11:50,340 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:11:50,340 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-14 23:11:50,340 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:11:50,340 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-14 23:11:50,340 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:11:50,342 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:11:50,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-12-14 23:11:50,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:50,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:50,358 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:50,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-12-14 23:11:50,360 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:11:50,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:11:50,366 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:11:50,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:11:50,366 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-14 23:11:50,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:11:50,367 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-14 23:11:50,367 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:11:50,368 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:11:50,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:50,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:50,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:50,385 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:50,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-12-14 23:11:50,387 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:11:50,393 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:11:50,393 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:11:50,393 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:11:50,393 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:11:50,394 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:11:50,394 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:11:50,394 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:11:50,415 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:11:50,421 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-14 23:11:50,421 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:11:50,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:50,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:50,432 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:50,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-12-14 23:11:50,434 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:11:50,434 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:11:50,434 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:11:50,434 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = 1*ULTIMATE.start_main_~s__state~0#1 Supporting invariants [] [2021-12-14 23:11:50,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:50,450 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:11:50,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:50,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:11:50,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:50,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:11:50,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:50,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:50,591 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 23:11:50,591 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 567 states and 702 transitions. cyclomatic complexity: 157 Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:50,598 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 567 states and 702 transitions. cyclomatic complexity: 157. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 573 states and 708 transitions. Complement of second has 5 states. [2021-12-14 23:11:50,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-14 23:11:50,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:50,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-14 23:11:50,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 14 letters. Loop has 17 letters. [2021-12-14 23:11:50,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:50,599 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:11:50,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:50,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:11:50,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:50,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:11:50,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:50,714 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 23:11:50,714 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 567 states and 702 transitions. cyclomatic complexity: 157 Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:50,730 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 567 states and 702 transitions. cyclomatic complexity: 157. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 573 states and 708 transitions. Complement of second has 5 states. [2021-12-14 23:11:50,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-14 23:11:50,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:50,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-14 23:11:50,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 14 letters. Loop has 17 letters. [2021-12-14 23:11:50,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:50,732 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:11:50,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:50,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:11:50,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:50,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:11:50,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:50,839 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 23:11:50,839 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 567 states and 702 transitions. cyclomatic complexity: 157 Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:50,898 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 567 states and 702 transitions. cyclomatic complexity: 157. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1051 states and 1283 transitions. Complement of second has 8 states. [2021-12-14 23:11:50,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-14 23:11:50,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2021-12-14 23:11:50,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 108 transitions. Stem has 14 letters. Loop has 17 letters. [2021-12-14 23:11:50,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:50,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 108 transitions. Stem has 31 letters. Loop has 17 letters. [2021-12-14 23:11:50,901 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:50,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 108 transitions. Stem has 14 letters. Loop has 34 letters. [2021-12-14 23:11:50,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:50,903 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1051 states and 1283 transitions. [2021-12-14 23:11:50,912 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 142 [2021-12-14 23:11:50,914 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1051 states to 686 states and 832 transitions. [2021-12-14 23:11:50,914 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 137 [2021-12-14 23:11:50,914 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 213 [2021-12-14 23:11:50,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 686 states and 832 transitions. [2021-12-14 23:11:50,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:50,914 INFO L681 BuchiCegarLoop]: Abstraction has 686 states and 832 transitions. [2021-12-14 23:11:50,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states and 832 transitions. [2021-12-14 23:11:50,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 594. [2021-12-14 23:11:50,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 594 states have (on average 1.245791245791246) internal successors, (740), 593 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:50,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 740 transitions. [2021-12-14 23:11:50,922 INFO L704 BuchiCegarLoop]: Abstraction has 594 states and 740 transitions. [2021-12-14 23:11:50,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:11:50,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:11:50,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:11:50,923 INFO L87 Difference]: Start difference. First operand 594 states and 740 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:50,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:11:50,952 INFO L93 Difference]: Finished difference Result 587 states and 730 transitions. [2021-12-14 23:11:50,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:11:50,953 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 587 states and 730 transitions. [2021-12-14 23:11:50,954 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 140 [2021-12-14 23:11:50,956 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 587 states to 565 states and 708 transitions. [2021-12-14 23:11:50,956 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 166 [2021-12-14 23:11:50,956 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 166 [2021-12-14 23:11:50,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 565 states and 708 transitions. [2021-12-14 23:11:50,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:50,957 INFO L681 BuchiCegarLoop]: Abstraction has 565 states and 708 transitions. [2021-12-14 23:11:50,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states and 708 transitions. [2021-12-14 23:11:50,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 564. [2021-12-14 23:11:50,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 564 states have (on average 1.25354609929078) internal successors, (707), 563 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:50,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 707 transitions. [2021-12-14 23:11:50,963 INFO L704 BuchiCegarLoop]: Abstraction has 564 states and 707 transitions. [2021-12-14 23:11:50,963 INFO L587 BuchiCegarLoop]: Abstraction has 564 states and 707 transitions. [2021-12-14 23:11:50,964 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-12-14 23:11:50,964 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 564 states and 707 transitions. [2021-12-14 23:11:50,965 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 140 [2021-12-14 23:11:50,965 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:11:50,966 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:11:50,966 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:50,967 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:50,967 INFO L791 eck$LassoCheckResult]: Stem: 21170#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 21134#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~s__verify_mode~0#1, main_~s__session__peer~0#1, main_~s__s3__tmp__new_cipher__algorithms~0#1, main_~buf~0#1, main_~cb~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~s__verify_mode~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~s__session__peer~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~s__s3__tmp__new_cipher__algorithms~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~buf~0#1;havoc main_~cb~0#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 21135#L188 assume !false; 21562#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 21563#L41 assume 8466 == main_~s__state~0#1; 21645#L42 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 1; 21643#L90-1 main_~s__state~0#1 := 8496; 21641#L188 assume !false; 21640#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 21638#L41 assume !(8466 == main_~s__state~0#1); 21637#L44 assume 8496 == main_~s__state~0#1; 21622#L45 assume 1 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 21164#L97-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 21165#L188 assume !false; 21159#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 21160#L41 assume !(8466 == main_~s__state~0#1); 21115#L44 assume !(8496 == main_~s__state~0#1); 21116#L48 assume !(8512 == main_~s__state~0#1); 21369#L52 assume !(8528 == main_~s__state~0#1); 21278#L56 assume !(8544 == main_~s__state~0#1); 21209#L60 [2021-12-14 23:11:50,967 INFO L793 eck$LassoCheckResult]: Loop: 21209#L60 assume 8560 == main_~s__state~0#1; 21119#L61 main_~s__state~0#1 := 8576; 21111#L188 assume !false; 21241#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 21235#L41 assume !(8466 == main_~s__state~0#1); 21228#L44 assume !(8496 == main_~s__state~0#1); 21223#L48 assume !(8512 == main_~s__state~0#1); 21218#L52 assume !(8528 == main_~s__state~0#1); 21212#L56 assume !(8544 == main_~s__state~0#1); 21209#L60 [2021-12-14 23:11:50,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:50,968 INFO L85 PathProgramCache]: Analyzing trace with hash 985223291, now seen corresponding path program 1 times [2021-12-14 23:11:50,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:50,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617624015] [2021-12-14 23:11:50,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:50,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 23:11:50,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:11:50,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617624015] [2021-12-14 23:11:50,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617624015] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:11:50,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:11:50,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:11:50,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972449555] [2021-12-14 23:11:50,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:11:50,990 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 23:11:50,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:50,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1708032834, now seen corresponding path program 1 times [2021-12-14 23:11:50,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:50,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818532543] [2021-12-14 23:11:50,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:50,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:50,992 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:50,994 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:51,006 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:51,006 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:51,006 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:51,006 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:51,006 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:11:51,006 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:51,006 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:51,006 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:51,006 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration12_Loop [2021-12-14 23:11:51,006 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:51,006 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:51,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:51,017 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:51,017 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:11:51,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:51,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:51,018 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:51,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-12-14 23:11:51,020 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:11:51,020 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:51,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:51,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:51,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:51,066 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:51,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-12-14 23:11:51,068 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:11:51,068 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:51,075 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:11:51,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-12-14 23:11:51,091 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:51,091 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:51,091 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:51,091 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:51,091 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:11:51,091 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:51,091 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:51,091 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:51,091 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration12_Loop [2021-12-14 23:11:51,091 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:51,091 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:51,091 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:51,106 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:51,106 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:11:51,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:51,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:51,107 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:51,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-12-14 23:11:51,110 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:11:51,116 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:11:51,116 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:11:51,116 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:11:51,116 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:11:51,116 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:11:51,117 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:11:51,117 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:11:51,132 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:11:51,133 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:11:51,133 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:11:51,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:51,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:51,134 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:51,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-12-14 23:11:51,136 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:11:51,136 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:11:51,136 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:11:51,136 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = -1*ULTIMATE.start_main_~s__state~0#1 + 8568 Supporting invariants [] [2021-12-14 23:11:51,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:51,158 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:11:51,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:51,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:11:51,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:51,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:11:51,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:51,282 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 23:11:51,283 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 564 states and 707 transitions. cyclomatic complexity: 163 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:51,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:51,411 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 564 states and 707 transitions. cyclomatic complexity: 163. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 975 states and 1257 transitions. Complement of second has 9 states. [2021-12-14 23:11:51,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-14 23:11:51,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:51,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2021-12-14 23:11:51,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 157 transitions. Stem has 20 letters. Loop has 9 letters. [2021-12-14 23:11:51,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:51,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 157 transitions. Stem has 29 letters. Loop has 9 letters. [2021-12-14 23:11:51,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:51,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 157 transitions. Stem has 20 letters. Loop has 18 letters. [2021-12-14 23:11:51,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:51,413 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 975 states and 1257 transitions. [2021-12-14 23:11:51,417 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 180 [2021-12-14 23:11:51,419 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 975 states to 839 states and 1084 transitions. [2021-12-14 23:11:51,419 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 238 [2021-12-14 23:11:51,419 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 249 [2021-12-14 23:11:51,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 839 states and 1084 transitions. [2021-12-14 23:11:51,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:51,420 INFO L681 BuchiCegarLoop]: Abstraction has 839 states and 1084 transitions. [2021-12-14 23:11:51,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states and 1084 transitions. [2021-12-14 23:11:51,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 668. [2021-12-14 23:11:51,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 668 states have (on average 1.2889221556886228) internal successors, (861), 667 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:51,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 861 transitions. [2021-12-14 23:11:51,426 INFO L704 BuchiCegarLoop]: Abstraction has 668 states and 861 transitions. [2021-12-14 23:11:51,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:11:51,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:11:51,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:11:51,427 INFO L87 Difference]: Start difference. First operand 668 states and 861 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:51,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:11:51,456 INFO L93 Difference]: Finished difference Result 718 states and 900 transitions. [2021-12-14 23:11:51,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:11:51,457 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 718 states and 900 transitions. [2021-12-14 23:11:51,459 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 171 [2021-12-14 23:11:51,461 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 718 states to 694 states and 871 transitions. [2021-12-14 23:11:51,461 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 206 [2021-12-14 23:11:51,461 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 212 [2021-12-14 23:11:51,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 694 states and 871 transitions. [2021-12-14 23:11:51,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:51,462 INFO L681 BuchiCegarLoop]: Abstraction has 694 states and 871 transitions. [2021-12-14 23:11:51,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states and 871 transitions. [2021-12-14 23:11:51,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 686. [2021-12-14 23:11:51,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 686 states have (on average 1.2565597667638484) internal successors, (862), 685 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:51,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 862 transitions. [2021-12-14 23:11:51,468 INFO L704 BuchiCegarLoop]: Abstraction has 686 states and 862 transitions. [2021-12-14 23:11:51,468 INFO L587 BuchiCegarLoop]: Abstraction has 686 states and 862 transitions. [2021-12-14 23:11:51,468 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-12-14 23:11:51,468 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 686 states and 862 transitions. [2021-12-14 23:11:51,470 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 170 [2021-12-14 23:11:51,470 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:11:51,470 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:11:51,470 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:51,470 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:51,471 INFO L791 eck$LassoCheckResult]: Stem: 24210#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 24174#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~s__verify_mode~0#1, main_~s__session__peer~0#1, main_~s__s3__tmp__new_cipher__algorithms~0#1, main_~buf~0#1, main_~cb~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~s__verify_mode~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~s__session__peer~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~s__s3__tmp__new_cipher__algorithms~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~buf~0#1;havoc main_~cb~0#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 24175#L188 assume !false; 24715#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 24716#L41 assume 8466 == main_~s__state~0#1; 24222#L42 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 1; 24223#L90-1 main_~s__state~0#1 := 8496; 24714#L188 assume !false; 24713#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 24711#L41 assume !(8466 == main_~s__state~0#1); 24157#L44 assume 8496 == main_~s__state~0#1; 24158#L45 assume 1 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 24202#L97-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 24203#L188 assume !false; 24199#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 24200#L41 assume !(8466 == main_~s__state~0#1); 24226#L44 assume !(8496 == main_~s__state~0#1); 24196#L48 assume 8512 == main_~s__state~0#1; 24197#L49 main_~s__state~0#1 := 8528; 24563#L188 assume !false; 24561#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 24558#L41 assume !(8466 == main_~s__state~0#1); 24556#L44 assume !(8496 == main_~s__state~0#1); 24553#L48 assume !(8512 == main_~s__state~0#1); 24554#L52 assume !(8528 == main_~s__state~0#1); 24393#L56 assume !(8544 == main_~s__state~0#1); 24349#L60 assume !(8560 == main_~s__state~0#1); 24254#L64 [2021-12-14 23:11:51,471 INFO L793 eck$LassoCheckResult]: Loop: 24254#L64 assume 8576 == main_~s__state~0#1; 24251#L65 main_~tmp___1~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1; 24188#L147 assume !(2 == main_~tmp___1~0#1);main_~s__state~0#1 := 8592; 24155#L188 assume !false; 24308#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 24305#L41 assume !(8466 == main_~s__state~0#1); 24303#L44 assume !(8496 == main_~s__state~0#1); 24301#L48 assume !(8512 == main_~s__state~0#1); 24298#L52 assume !(8528 == main_~s__state~0#1); 24291#L56 assume !(8544 == main_~s__state~0#1); 24253#L60 assume !(8560 == main_~s__state~0#1); 24254#L64 [2021-12-14 23:11:51,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:51,471 INFO L85 PathProgramCache]: Analyzing trace with hash 368372739, now seen corresponding path program 1 times [2021-12-14 23:11:51,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:51,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205273983] [2021-12-14 23:11:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:51,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:51,481 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-14 23:11:51,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:11:51,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205273983] [2021-12-14 23:11:51,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205273983] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:11:51,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:11:51,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:11:51,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040174599] [2021-12-14 23:11:51,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:11:51,482 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 23:11:51,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:51,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1797154313, now seen corresponding path program 1 times [2021-12-14 23:11:51,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:51,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555726862] [2021-12-14 23:11:51,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:51,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:51,484 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:51,486 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:51,507 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:51,507 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:51,507 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:51,507 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:51,508 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:11:51,508 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:51,508 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:51,508 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:51,508 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration13_Loop [2021-12-14 23:11:51,508 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:51,508 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:51,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:51,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:51,535 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:51,535 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:11:51,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:51,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:51,537 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:51,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-12-14 23:11:51,539 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:11:51,539 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:51,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:51,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:51,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:51,575 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:51,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-12-14 23:11:51,577 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:11:51,577 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:51,598 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:11:51,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:51,613 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:51,613 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:51,613 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:51,613 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:51,613 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:11:51,614 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:51,614 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:51,614 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:51,614 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration13_Loop [2021-12-14 23:11:51,614 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:51,614 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:51,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:51,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:51,642 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:51,642 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:11:51,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:51,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:51,643 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:51,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-12-14 23:11:51,645 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:11:51,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:11:51,651 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:11:51,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:11:51,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:11:51,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:11:51,652 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:11:51,652 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:11:51,667 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:11:51,668 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:11:51,668 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:11:51,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:51,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:51,669 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:51,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-12-14 23:11:51,672 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:11:51,672 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:11:51,672 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:11:51,672 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = -1*ULTIMATE.start_main_~s__state~0#1 + 8584 Supporting invariants [] [2021-12-14 23:11:51,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:51,687 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:11:51,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:51,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:11:51,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:51,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:11:51,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:51,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:51,806 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 23:11:51,806 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 686 states and 862 transitions. cyclomatic complexity: 196 Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:51,917 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 686 states and 862 transitions. cyclomatic complexity: 196. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1151 states and 1475 transitions. Complement of second has 9 states. [2021-12-14 23:11:51,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-14 23:11:51,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:51,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2021-12-14 23:11:51,918 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 162 transitions. Stem has 27 letters. Loop has 11 letters. [2021-12-14 23:11:51,918 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:51,918 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 162 transitions. Stem has 38 letters. Loop has 11 letters. [2021-12-14 23:11:51,919 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:51,919 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 162 transitions. Stem has 27 letters. Loop has 22 letters. [2021-12-14 23:11:51,919 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:51,919 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1151 states and 1475 transitions. [2021-12-14 23:11:51,923 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 228 [2021-12-14 23:11:51,925 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1151 states to 1010 states and 1297 transitions. [2021-12-14 23:11:51,925 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 300 [2021-12-14 23:11:51,926 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 308 [2021-12-14 23:11:51,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1010 states and 1297 transitions. [2021-12-14 23:11:51,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:51,926 INFO L681 BuchiCegarLoop]: Abstraction has 1010 states and 1297 transitions. [2021-12-14 23:11:51,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states and 1297 transitions. [2021-12-14 23:11:51,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 829. [2021-12-14 23:11:51,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:51,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 829 states have (on average 1.2882991556091676) internal successors, (1068), 828 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1068 transitions. [2021-12-14 23:11:51,960 INFO L704 BuchiCegarLoop]: Abstraction has 829 states and 1068 transitions. [2021-12-14 23:11:51,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:11:51,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:11:51,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:11:51,960 INFO L87 Difference]: Start difference. First operand 829 states and 1068 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:51,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:11:51,993 INFO L93 Difference]: Finished difference Result 886 states and 1109 transitions. [2021-12-14 23:11:51,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:11:51,994 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 886 states and 1109 transitions. [2021-12-14 23:11:51,996 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 212 [2021-12-14 23:11:51,998 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 886 states to 851 states and 1068 transitions. [2021-12-14 23:11:51,998 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 262 [2021-12-14 23:11:51,998 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 264 [2021-12-14 23:11:51,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 851 states and 1068 transitions. [2021-12-14 23:11:51,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:51,999 INFO L681 BuchiCegarLoop]: Abstraction has 851 states and 1068 transitions. [2021-12-14 23:11:51,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states and 1068 transitions. [2021-12-14 23:11:52,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 836. [2021-12-14 23:11:52,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 836 states have (on average 1.2583732057416268) internal successors, (1052), 835 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:52,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1052 transitions. [2021-12-14 23:11:52,005 INFO L704 BuchiCegarLoop]: Abstraction has 836 states and 1052 transitions. [2021-12-14 23:11:52,005 INFO L587 BuchiCegarLoop]: Abstraction has 836 states and 1052 transitions. [2021-12-14 23:11:52,005 INFO L425 BuchiCegarLoop]: ======== Iteration 14============ [2021-12-14 23:11:52,006 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 836 states and 1052 transitions. [2021-12-14 23:11:52,007 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 211 [2021-12-14 23:11:52,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:11:52,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:11:52,007 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:52,007 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:52,008 INFO L791 eck$LassoCheckResult]: Stem: 27906#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 27869#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~s__verify_mode~0#1, main_~s__session__peer~0#1, main_~s__s3__tmp__new_cipher__algorithms~0#1, main_~buf~0#1, main_~cb~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~s__verify_mode~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~s__session__peer~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~s__s3__tmp__new_cipher__algorithms~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~buf~0#1;havoc main_~cb~0#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 27870#L188 assume !false; 28320#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 28318#L41 assume 8466 == main_~s__state~0#1; 28314#L42 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 1; 28311#L90-1 main_~s__state~0#1 := 8496; 28308#L188 assume !false; 28305#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 28303#L41 assume !(8466 == main_~s__state~0#1); 28300#L44 assume 8496 == main_~s__state~0#1; 28298#L45 assume 1 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 28295#L97-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 28292#L188 assume !false; 28289#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 28287#L41 assume !(8466 == main_~s__state~0#1); 28285#L44 assume !(8496 == main_~s__state~0#1); 28283#L48 assume 8512 == main_~s__state~0#1; 28282#L49 main_~s__state~0#1 := 8528; 28281#L188 assume !false; 28279#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 28272#L41 assume !(8466 == main_~s__state~0#1); 28270#L44 assume !(8496 == main_~s__state~0#1); 28267#L48 assume !(8512 == main_~s__state~0#1); 28245#L52 assume 8528 == main_~s__state~0#1; 28234#L53 main_~s__state~0#1 := 8544; 28226#L188 assume !false; 28221#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 28214#L41 assume !(8466 == main_~s__state~0#1); 28205#L44 assume !(8496 == main_~s__state~0#1); 28204#L48 assume !(8512 == main_~s__state~0#1); 28148#L52 assume !(8528 == main_~s__state~0#1); 28149#L56 assume !(8544 == main_~s__state~0#1); 28108#L60 assume !(8560 == main_~s__state~0#1); 28035#L64 assume 8576 == main_~s__state~0#1; 27953#L65 [2021-12-14 23:11:52,008 INFO L793 eck$LassoCheckResult]: Loop: 27953#L65 main_~tmp___1~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1; 28134#L147 assume 2 == main_~tmp___1~0#1;main_~s__state~0#1 := 8466; 28131#L188 assume !false; 28129#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 28125#L41 assume 8466 == main_~s__state~0#1; 28024#L42 assume !(0 == main_~blastFlag~0#1); 28118#L90-1 main_~s__state~0#1 := 8496; 28114#L188 assume !false; 28109#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 28106#L41 assume !(8466 == main_~s__state~0#1); 28105#L44 assume 8496 == main_~s__state~0#1; 28019#L45 assume !(1 == main_~blastFlag~0#1); 28099#L97-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 28096#L188 assume !false; 28092#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 28088#L41 assume !(8466 == main_~s__state~0#1); 28086#L44 assume !(8496 == main_~s__state~0#1); 28081#L48 assume 8512 == main_~s__state~0#1; 28014#L49 main_~s__state~0#1 := 8528; 28072#L188 assume !false; 28069#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 28065#L41 assume !(8466 == main_~s__state~0#1); 28061#L44 assume !(8496 == main_~s__state~0#1); 28056#L48 assume !(8512 == main_~s__state~0#1); 28048#L52 assume 8528 == main_~s__state~0#1; 28009#L53 main_~s__state~0#1 := 8544; 28032#L188 assume !false; 28029#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 28023#L41 assume !(8466 == main_~s__state~0#1); 28018#L44 assume !(8496 == main_~s__state~0#1); 28013#L48 assume !(8512 == main_~s__state~0#1); 28008#L52 assume !(8528 == main_~s__state~0#1); 28003#L56 assume !(8544 == main_~s__state~0#1); 27998#L60 assume !(8560 == main_~s__state~0#1); 27995#L64 assume 8576 == main_~s__state~0#1; 27953#L65 [2021-12-14 23:11:52,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:52,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1975408204, now seen corresponding path program 1 times [2021-12-14 23:11:52,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:52,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816643498] [2021-12-14 23:11:52,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:52,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:52,019 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-14 23:11:52,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:11:52,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816643498] [2021-12-14 23:11:52,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816643498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:11:52,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:11:52,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:11:52,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031293503] [2021-12-14 23:11:52,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:11:52,020 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 23:11:52,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2135132753, now seen corresponding path program 1 times [2021-12-14 23:11:52,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:52,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775394472] [2021-12-14 23:11:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:52,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:52,030 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-14 23:11:52,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:11:52,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775394472] [2021-12-14 23:11:52,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775394472] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:11:52,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:11:52,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:11:52,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891554129] [2021-12-14 23:11:52,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:11:52,031 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:11:52,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:11:52,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:11:52,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:11:52,032 INFO L87 Difference]: Start difference. First operand 836 states and 1052 transitions. cyclomatic complexity: 236 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:11:52,062 INFO L93 Difference]: Finished difference Result 878 states and 1072 transitions. [2021-12-14 23:11:52,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:11:52,063 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 878 states and 1072 transitions. [2021-12-14 23:11:52,065 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 206 [2021-12-14 23:11:52,067 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 878 states to 831 states and 1019 transitions. [2021-12-14 23:11:52,067 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 258 [2021-12-14 23:11:52,067 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 260 [2021-12-14 23:11:52,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 831 states and 1019 transitions. [2021-12-14 23:11:52,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:52,068 INFO L681 BuchiCegarLoop]: Abstraction has 831 states and 1019 transitions. [2021-12-14 23:11:52,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states and 1019 transitions. [2021-12-14 23:11:52,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 808. [2021-12-14 23:11:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 808 states have (on average 1.2314356435643565) internal successors, (995), 807 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:52,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 995 transitions. [2021-12-14 23:11:52,075 INFO L704 BuchiCegarLoop]: Abstraction has 808 states and 995 transitions. [2021-12-14 23:11:52,075 INFO L587 BuchiCegarLoop]: Abstraction has 808 states and 995 transitions. [2021-12-14 23:11:52,075 INFO L425 BuchiCegarLoop]: ======== Iteration 15============ [2021-12-14 23:11:52,075 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 808 states and 995 transitions. [2021-12-14 23:11:52,078 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 205 [2021-12-14 23:11:52,078 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:11:52,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:11:52,079 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:52,079 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:52,079 INFO L791 eck$LassoCheckResult]: Stem: 29627#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 29590#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~s__verify_mode~0#1, main_~s__session__peer~0#1, main_~s__s3__tmp__new_cipher__algorithms~0#1, main_~buf~0#1, main_~cb~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~s__verify_mode~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~s__session__peer~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~s__s3__tmp__new_cipher__algorithms~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~buf~0#1;havoc main_~cb~0#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 29591#L188 assume !false; 30012#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 30006#L41 assume 8466 == main_~s__state~0#1; 30000#L42 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 1; 29936#L90-1 main_~s__state~0#1 := 8496; 29934#L188 assume !false; 29931#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 29929#L41 assume !(8466 == main_~s__state~0#1); 29926#L44 assume 8496 == main_~s__state~0#1; 29925#L45 assume 1 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 29922#L97-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 29918#L188 assume !false; 29916#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 29914#L41 assume !(8466 == main_~s__state~0#1); 29913#L44 assume !(8496 == main_~s__state~0#1); 29912#L48 assume 8512 == main_~s__state~0#1; 29910#L49 main_~s__state~0#1 := 8528; 29908#L188 assume !false; 29907#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 29905#L41 assume !(8466 == main_~s__state~0#1); 29903#L44 assume !(8496 == main_~s__state~0#1); 29901#L48 assume !(8512 == main_~s__state~0#1); 29899#L52 assume 8528 == main_~s__state~0#1; 29897#L53 main_~s__state~0#1 := 8544; 29896#L188 assume !false; 29894#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 29892#L41 assume !(8466 == main_~s__state~0#1); 29890#L44 assume !(8496 == main_~s__state~0#1); 29888#L48 assume !(8512 == main_~s__state~0#1); 29886#L52 assume !(8528 == main_~s__state~0#1); 29884#L56 assume 8544 == main_~s__state~0#1; 29875#L57 assume !(0 != 1 + main_~s__verify_mode~0#1);main_~s__state~0#1 := 8560; 29871#L188 assume !false; 29869#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 29867#L41 assume !(8466 == main_~s__state~0#1); 29860#L44 assume !(8496 == main_~s__state~0#1); 29855#L48 assume !(8512 == main_~s__state~0#1); 29851#L52 assume !(8528 == main_~s__state~0#1); 29827#L56 assume !(8544 == main_~s__state~0#1); 29828#L60 assume !(8560 == main_~s__state~0#1); 29764#L64 assume 8576 == main_~s__state~0#1; 29666#L65 [2021-12-14 23:11:52,079 INFO L793 eck$LassoCheckResult]: Loop: 29666#L65 main_~tmp___1~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1; 29605#L147 assume 2 == main_~tmp___1~0#1;main_~s__state~0#1 := 8466; 29606#L188 assume !false; 29911#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 29909#L41 assume 8466 == main_~s__state~0#1; 29742#L42 assume !(0 == main_~blastFlag~0#1); 29906#L90-1 main_~s__state~0#1 := 8496; 29904#L188 assume !false; 29902#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 29900#L41 assume !(8466 == main_~s__state~0#1); 29898#L44 assume 8496 == main_~s__state~0#1; 29737#L45 assume !(1 == main_~blastFlag~0#1); 29895#L97-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 29893#L188 assume !false; 29891#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 29889#L41 assume !(8466 == main_~s__state~0#1); 29887#L44 assume !(8496 == main_~s__state~0#1); 29885#L48 assume 8512 == main_~s__state~0#1; 29732#L49 main_~s__state~0#1 := 8528; 29882#L188 assume !false; 29881#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 29880#L41 assume !(8466 == main_~s__state~0#1); 29873#L44 assume !(8496 == main_~s__state~0#1); 29870#L48 assume !(8512 == main_~s__state~0#1); 29868#L52 assume 8528 == main_~s__state~0#1; 29727#L53 main_~s__state~0#1 := 8544; 29856#L188 assume !false; 29852#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 29847#L41 assume !(8466 == main_~s__state~0#1); 29845#L44 assume !(8496 == main_~s__state~0#1); 29842#L48 assume !(8512 == main_~s__state~0#1); 29839#L52 assume !(8528 == main_~s__state~0#1); 29772#L56 assume 8544 == main_~s__state~0#1; 29722#L57 assume !(0 != 1 + main_~s__verify_mode~0#1);main_~s__state~0#1 := 8560; 29751#L188 assume !false; 29746#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 29741#L41 assume !(8466 == main_~s__state~0#1); 29736#L44 assume !(8496 == main_~s__state~0#1); 29731#L48 assume !(8512 == main_~s__state~0#1); 29726#L52 assume !(8528 == main_~s__state~0#1); 29721#L56 assume !(8544 == main_~s__state~0#1); 29716#L60 assume !(8560 == main_~s__state~0#1); 29713#L64 assume 8576 == main_~s__state~0#1; 29666#L65 [2021-12-14 23:11:52,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:52,080 INFO L85 PathProgramCache]: Analyzing trace with hash 242898568, now seen corresponding path program 1 times [2021-12-14 23:11:52,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:52,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567213403] [2021-12-14 23:11:52,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:52,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:52,094 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 23:11:52,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:11:52,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567213403] [2021-12-14 23:11:52,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567213403] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:11:52,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:11:52,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:11:52,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540705115] [2021-12-14 23:11:52,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:11:52,095 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 23:11:52,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1911359613, now seen corresponding path program 1 times [2021-12-14 23:11:52,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:52,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697567959] [2021-12-14 23:11:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:52,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:52,105 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 23:11:52,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:11:52,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697567959] [2021-12-14 23:11:52,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697567959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:11:52,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:11:52,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:11:52,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285893948] [2021-12-14 23:11:52,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:11:52,106 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:11:52,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:11:52,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:11:52,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:11:52,107 INFO L87 Difference]: Start difference. First operand 808 states and 995 transitions. cyclomatic complexity: 204 Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:52,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:11:52,141 INFO L93 Difference]: Finished difference Result 889 states and 1061 transitions. [2021-12-14 23:11:52,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:11:52,141 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 889 states and 1061 transitions. [2021-12-14 23:11:52,143 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 182 [2021-12-14 23:11:52,145 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 889 states to 825 states and 988 transitions. [2021-12-14 23:11:52,145 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 243 [2021-12-14 23:11:52,146 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 244 [2021-12-14 23:11:52,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 825 states and 988 transitions. [2021-12-14 23:11:52,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:52,146 INFO L681 BuchiCegarLoop]: Abstraction has 825 states and 988 transitions. [2021-12-14 23:11:52,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states and 988 transitions. [2021-12-14 23:11:52,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 816. [2021-12-14 23:11:52,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 816 states have (on average 1.1997549019607843) internal successors, (979), 815 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:52,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 979 transitions. [2021-12-14 23:11:52,153 INFO L704 BuchiCegarLoop]: Abstraction has 816 states and 979 transitions. [2021-12-14 23:11:52,153 INFO L587 BuchiCegarLoop]: Abstraction has 816 states and 979 transitions. [2021-12-14 23:11:52,153 INFO L425 BuchiCegarLoop]: ======== Iteration 16============ [2021-12-14 23:11:52,153 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 816 states and 979 transitions. [2021-12-14 23:11:52,154 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 182 [2021-12-14 23:11:52,154 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:11:52,154 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:11:52,155 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:52,155 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:52,155 INFO L791 eck$LassoCheckResult]: Stem: 31333#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 31295#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~s__verify_mode~0#1, main_~s__session__peer~0#1, main_~s__s3__tmp__new_cipher__algorithms~0#1, main_~buf~0#1, main_~cb~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~s__verify_mode~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~s__session__peer~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~s__s3__tmp__new_cipher__algorithms~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~buf~0#1;havoc main_~cb~0#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 31296#L188 assume !false; 31586#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 31587#L41 assume 8466 == main_~s__state~0#1; 31345#L42 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 1; 31340#L90-1 main_~s__state~0#1 := 8496; 31315#L188 assume !false; 31316#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 32019#L41 assume !(8466 == main_~s__state~0#1); 32015#L44 assume 8496 == main_~s__state~0#1; 32012#L45 assume 1 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 31329#L97-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 31331#L188 assume !false; 32083#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 32082#L41 assume !(8466 == main_~s__state~0#1); 32081#L44 assume !(8496 == main_~s__state~0#1); 31319#L48 assume !(8512 == main_~s__state~0#1); 31320#L52 assume !(8528 == main_~s__state~0#1); 31284#L56 assume !(8544 == main_~s__state~0#1); 31285#L60 assume !(8560 == main_~s__state~0#1); 31336#L64 assume !(8576 == main_~s__state~0#1); 31337#L68 assume !(8592 == main_~s__state~0#1); 31344#L72 assume !(8608 == main_~s__state~0#1); 32062#L76 assume !(8640 == main_~s__state~0#1); 32060#L80 assume 8656 == main_~s__state~0#1; 32058#L81 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 32056#L174-1 main_~s__state~0#1 := 8672; 31939#L188 assume !false; 31937#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 31935#L41 assume !(8466 == main_~s__state~0#1); 31933#L44 assume !(8496 == main_~s__state~0#1); 31931#L48 assume !(8512 == main_~s__state~0#1); 31929#L52 assume !(8528 == main_~s__state~0#1); 31927#L56 assume !(8544 == main_~s__state~0#1); 31925#L60 assume !(8560 == main_~s__state~0#1); 31923#L64 assume !(8576 == main_~s__state~0#1); 31921#L68 assume !(8592 == main_~s__state~0#1); 31919#L72 assume !(8608 == main_~s__state~0#1); 31917#L76 assume !(8640 == main_~s__state~0#1); 31915#L80 assume !(8656 == main_~s__state~0#1); 31913#L84 assume 8672 == main_~s__state~0#1; 31911#L85 assume 4 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 5; 31907#L181-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 31902#L188 assume !false; 31876#L35 [2021-12-14 23:11:52,155 INFO L793 eck$LassoCheckResult]: Loop: 31876#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 31875#L41 assume !(8466 == main_~s__state~0#1); 31781#L44 assume !(8496 == main_~s__state~0#1); 31778#L48 assume !(8512 == main_~s__state~0#1); 31776#L52 assume !(8528 == main_~s__state~0#1); 31774#L56 assume !(8544 == main_~s__state~0#1); 31772#L60 assume !(8560 == main_~s__state~0#1); 31770#L64 assume !(8576 == main_~s__state~0#1); 31768#L68 assume !(8592 == main_~s__state~0#1); 31359#L72 assume !(8608 == main_~s__state~0#1); 31360#L76 assume !(8640 == main_~s__state~0#1); 31299#L80 assume 8656 == main_~s__state~0#1; 31300#L81 assume !(2 == main_~blastFlag~0#1); 31338#L174-1 main_~s__state~0#1 := 8672; 31350#L188 assume !false; 31904#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 31935#L41 assume !(8466 == main_~s__state~0#1); 31933#L44 assume !(8496 == main_~s__state~0#1); 31931#L48 assume !(8512 == main_~s__state~0#1); 31929#L52 assume !(8528 == main_~s__state~0#1); 31927#L56 assume !(8544 == main_~s__state~0#1); 31925#L60 assume !(8560 == main_~s__state~0#1); 31923#L64 assume !(8576 == main_~s__state~0#1); 31921#L68 assume !(8592 == main_~s__state~0#1); 31919#L72 assume !(8608 == main_~s__state~0#1); 31917#L76 assume !(8640 == main_~s__state~0#1); 31915#L80 assume !(8656 == main_~s__state~0#1); 31913#L84 assume 8672 == main_~s__state~0#1; 31911#L85 assume 4 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 5; 31907#L181-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 31902#L188 assume !false; 31876#L35 [2021-12-14 23:11:52,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:52,156 INFO L85 PathProgramCache]: Analyzing trace with hash -359758799, now seen corresponding path program 1 times [2021-12-14 23:11:52,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:52,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688088938] [2021-12-14 23:11:52,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:52,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:52,168 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-14 23:11:52,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:11:52,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688088938] [2021-12-14 23:11:52,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688088938] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:11:52,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:11:52,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:11:52,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587762124] [2021-12-14 23:11:52,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:11:52,169 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 23:11:52,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:52,169 INFO L85 PathProgramCache]: Analyzing trace with hash 944749696, now seen corresponding path program 1 times [2021-12-14 23:11:52,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:52,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178233072] [2021-12-14 23:11:52,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:52,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:52,172 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:52,174 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:52,225 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:52,225 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:52,225 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:52,226 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:52,226 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:11:52,226 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:52,226 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:52,226 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:52,226 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration16_Loop [2021-12-14 23:11:52,226 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:52,226 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:52,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:52,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:52,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:52,260 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:52,261 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:11:52,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:52,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:52,262 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:52,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-12-14 23:11:52,264 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:11:52,264 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:52,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:52,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:52,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:52,307 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:52,312 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:11:52,312 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:11:52,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-12-14 23:11:52,327 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:11:52,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:52,342 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:11:52,342 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:11:52,343 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:11:52,343 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:11:52,343 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:11:52,343 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:52,343 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:11:52,343 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:11:52,343 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration16_Loop [2021-12-14 23:11:52,343 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:11:52,343 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:11:52,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:52,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:52,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:11:52,376 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:11:52,377 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:11:52,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:52,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:52,378 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:52,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-12-14 23:11:52,380 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:11:52,386 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:11:52,386 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:11:52,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:11:52,387 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:11:52,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:11:52,387 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:11:52,387 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:11:52,402 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:11:52,404 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-14 23:11:52,404 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:11:52,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:11:52,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:11:52,416 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:11:52,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-12-14 23:11:52,422 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:11:52,423 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:11:52,423 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:11:52,423 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = 1*ULTIMATE.start_main_~s__state~0#1 Supporting invariants [] [2021-12-14 23:11:52,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:52,438 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:11:52,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:52,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:11:52,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:52,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:11:52,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:52,608 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:52,608 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 23:11:52,609 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 816 states and 979 transitions. cyclomatic complexity: 179 Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:52,628 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 816 states and 979 transitions. cyclomatic complexity: 179. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 822 states and 985 transitions. Complement of second has 5 states. [2021-12-14 23:11:52,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-14 23:11:52,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:52,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-14 23:11:52,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 45 letters. Loop has 31 letters. [2021-12-14 23:11:52,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:52,629 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:11:52,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:52,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:11:52,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:52,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:11:52,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:52,812 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 23:11:52,812 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 816 states and 979 transitions. cyclomatic complexity: 179 Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:52,818 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 816 states and 979 transitions. cyclomatic complexity: 179. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 822 states and 985 transitions. Complement of second has 5 states. [2021-12-14 23:11:52,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-14 23:11:52,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-14 23:11:52,819 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 45 letters. Loop has 31 letters. [2021-12-14 23:11:52,819 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:52,819 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:11:52,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:52,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:11:52,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:11:52,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:11:52,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:11:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:11:53,001 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 23:11:53,001 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 816 states and 979 transitions. cyclomatic complexity: 179 Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:53,080 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 816 states and 979 transitions. cyclomatic complexity: 179. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1762 states and 2064 transitions. Complement of second has 18 states. [2021-12-14 23:11:53,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-14 23:11:53,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:53,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2021-12-14 23:11:53,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 128 transitions. Stem has 45 letters. Loop has 31 letters. [2021-12-14 23:11:53,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:53,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 128 transitions. Stem has 76 letters. Loop has 31 letters. [2021-12-14 23:11:53,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:53,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 128 transitions. Stem has 45 letters. Loop has 62 letters. [2021-12-14 23:11:53,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:11:53,083 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1762 states and 2064 transitions. [2021-12-14 23:11:53,087 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 146 [2021-12-14 23:11:53,089 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1762 states to 1036 states and 1214 transitions. [2021-12-14 23:11:53,089 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 227 [2021-12-14 23:11:53,090 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 256 [2021-12-14 23:11:53,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1036 states and 1214 transitions. [2021-12-14 23:11:53,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:53,090 INFO L681 BuchiCegarLoop]: Abstraction has 1036 states and 1214 transitions. [2021-12-14 23:11:53,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states and 1214 transitions. [2021-12-14 23:11:53,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 864. [2021-12-14 23:11:53,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 864 states have (on average 1.2025462962962963) internal successors, (1039), 863 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:53,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1039 transitions. [2021-12-14 23:11:53,099 INFO L704 BuchiCegarLoop]: Abstraction has 864 states and 1039 transitions. [2021-12-14 23:11:53,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:11:53,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:11:53,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:11:53,100 INFO L87 Difference]: Start difference. First operand 864 states and 1039 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:53,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:11:53,111 INFO L93 Difference]: Finished difference Result 861 states and 1025 transitions. [2021-12-14 23:11:53,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:11:53,112 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 861 states and 1025 transitions. [2021-12-14 23:11:53,114 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 146 [2021-12-14 23:11:53,117 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 861 states to 798 states and 957 transitions. [2021-12-14 23:11:53,117 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 230 [2021-12-14 23:11:53,117 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 230 [2021-12-14 23:11:53,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 798 states and 957 transitions. [2021-12-14 23:11:53,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:11:53,117 INFO L681 BuchiCegarLoop]: Abstraction has 798 states and 957 transitions. [2021-12-14 23:11:53,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states and 957 transitions. [2021-12-14 23:11:53,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 719. [2021-12-14 23:11:53,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 719 states have (on average 1.21557719054242) internal successors, (874), 718 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:11:53,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 874 transitions. [2021-12-14 23:11:53,142 INFO L704 BuchiCegarLoop]: Abstraction has 719 states and 874 transitions. [2021-12-14 23:11:53,142 INFO L587 BuchiCegarLoop]: Abstraction has 719 states and 874 transitions. [2021-12-14 23:11:53,143 INFO L425 BuchiCegarLoop]: ======== Iteration 17============ [2021-12-14 23:11:53,143 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 719 states and 874 transitions. [2021-12-14 23:11:53,144 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 131 [2021-12-14 23:11:53,144 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:11:53,144 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:11:53,144 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:53,144 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:11:53,144 INFO L791 eck$LassoCheckResult]: Stem: 38012#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 37976#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~s__verify_mode~0#1, main_~s__session__peer~0#1, main_~s__s3__tmp__new_cipher__algorithms~0#1, main_~buf~0#1, main_~cb~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~s__verify_mode~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~s__session__peer~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~s__s3__tmp__new_cipher__algorithms~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~buf~0#1;havoc main_~cb~0#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 37977#L188 assume !false; 38350#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 38347#L41 assume 8466 == main_~s__state~0#1; 38345#L42 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 1; 38342#L90-1 main_~s__state~0#1 := 8496; 38340#L188 assume !false; 38337#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 38334#L41 assume !(8466 == main_~s__state~0#1); 38330#L44 assume 8496 == main_~s__state~0#1; 38035#L45 assume 1 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 38007#L97-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 38008#L188 assume !false; 38376#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 38374#L41 assume !(8466 == main_~s__state~0#1); 38373#L44 assume !(8496 == main_~s__state~0#1); 38372#L48 assume 8512 == main_~s__state~0#1; 37984#L49 main_~s__state~0#1 := 8528; 37985#L188 assume !false; 38241#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 38239#L41 assume !(8466 == main_~s__state~0#1); 38237#L44 assume !(8496 == main_~s__state~0#1); 38235#L48 assume !(8512 == main_~s__state~0#1); 38233#L52 assume 8528 == main_~s__state~0#1; 38045#L53 main_~s__state~0#1 := 8544; 38046#L188 assume !false; 38396#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 38395#L41 assume !(8466 == main_~s__state~0#1); 38394#L44 assume !(8496 == main_~s__state~0#1); 38393#L48 assume !(8512 == main_~s__state~0#1); 38392#L52 assume !(8528 == main_~s__state~0#1); 38390#L56 assume 8544 == main_~s__state~0#1; 38383#L57 assume 0 != 1 + main_~s__verify_mode~0#1; 38384#L117 assume !(0 != main_~s__session__peer~0#1); 38388#L124 assume !(0 != (256 + main_~s__s3__tmp__new_cipher__algorithms~0#1) % 4294967296); 38386#L132 main_~s__state~0#1 := 8576; 38410#L188 assume !false; 38003#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 38004#L41 assume !(8466 == main_~s__state~0#1); 37956#L44 assume !(8496 == main_~s__state~0#1); 37957#L48 assume !(8512 == main_~s__state~0#1); 38001#L52 assume !(8528 == main_~s__state~0#1); 37964#L56 assume !(8544 == main_~s__state~0#1); 37965#L60 assume !(8560 == main_~s__state~0#1); 38212#L64 assume 8576 == main_~s__state~0#1; 38056#L65 [2021-12-14 23:11:53,144 INFO L793 eck$LassoCheckResult]: Loop: 38056#L65 main_~tmp___1~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1; 37993#L147 assume 2 == main_~tmp___1~0#1;main_~s__state~0#1 := 8466; 37994#L188 assume !false; 38229#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 38227#L41 assume 8466 == main_~s__state~0#1; 38102#L42 assume !(0 == main_~blastFlag~0#1); 38223#L90-1 main_~s__state~0#1 := 8496; 38222#L188 assume !false; 38221#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 38219#L41 assume !(8466 == main_~s__state~0#1); 38217#L44 assume 8496 == main_~s__state~0#1; 38097#L45 assume !(1 == main_~blastFlag~0#1); 38215#L97-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 38210#L188 assume !false; 38207#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 38203#L41 assume !(8466 == main_~s__state~0#1); 38202#L44 assume !(8496 == main_~s__state~0#1); 38201#L48 assume 8512 == main_~s__state~0#1; 38090#L49 main_~s__state~0#1 := 8528; 38195#L188 assume !false; 38193#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 38192#L41 assume !(8466 == main_~s__state~0#1); 38190#L44 assume !(8496 == main_~s__state~0#1); 38188#L48 assume !(8512 == main_~s__state~0#1); 38186#L52 assume 8528 == main_~s__state~0#1; 38086#L53 main_~s__state~0#1 := 8544; 38183#L188 assume !false; 38178#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 38174#L41 assume !(8466 == main_~s__state~0#1); 38169#L44 assume !(8496 == main_~s__state~0#1); 38165#L48 assume !(8512 == main_~s__state~0#1); 38160#L52 assume !(8528 == main_~s__state~0#1); 38117#L56 assume 8544 == main_~s__state~0#1; 38042#L57 assume 0 != 1 + main_~s__verify_mode~0#1; 37970#L117 assume !(0 != main_~s__session__peer~0#1); 37971#L124 assume !(0 != (256 + main_~s__s3__tmp__new_cipher__algorithms~0#1) % 4294967296); 38111#L132 main_~s__state~0#1 := 8576; 38107#L188 assume !false; 38104#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 38101#L41 assume !(8466 == main_~s__state~0#1); 38096#L44 assume !(8496 == main_~s__state~0#1); 38089#L48 assume !(8512 == main_~s__state~0#1); 38085#L52 assume !(8528 == main_~s__state~0#1); 38082#L56 assume !(8544 == main_~s__state~0#1); 38078#L60 assume !(8560 == main_~s__state~0#1); 38074#L64 assume 8576 == main_~s__state~0#1; 38056#L65 [2021-12-14 23:11:53,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:53,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1923687841, now seen corresponding path program 1 times [2021-12-14 23:11:53,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:53,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263813420] [2021-12-14 23:11:53,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:53,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:53,152 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:53,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-12-14 23:11:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:53,162 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:53,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:53,162 INFO L85 PathProgramCache]: Analyzing trace with hash -180445498, now seen corresponding path program 1 times [2021-12-14 23:11:53,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:53,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048115621] [2021-12-14 23:11:53,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:53,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:53,165 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:53,168 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:53,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:11:53,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1007086694, now seen corresponding path program 1 times [2021-12-14 23:11:53,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:11:53,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802729289] [2021-12-14 23:11:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:11:53,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:11:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:53,173 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:11:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:11:53,179 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:11:53,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 11:11:53 BoogieIcfgContainer [2021-12-14 23:11:53,501 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 23:11:53,502 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 23:11:53,502 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 23:11:53,502 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 23:11:53,502 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:11:45" (3/4) ... [2021-12-14 23:11:53,504 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-14 23:11:53,528 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 23:11:53,528 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 23:11:53,528 INFO L158 Benchmark]: Toolchain (without parser) took 8843.42ms. Allocated memory was 90.2MB in the beginning and 138.4MB in the end (delta: 48.2MB). Free memory was 57.5MB in the beginning and 54.1MB in the end (delta: 3.5MB). Peak memory consumption was 53.7MB. Max. memory is 16.1GB. [2021-12-14 23:11:53,529 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:11:53,529 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.41ms. Allocated memory is still 90.2MB. Free memory was 57.4MB in the beginning and 65.8MB in the end (delta: -8.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 23:11:53,529 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.98ms. Allocated memory is still 90.2MB. Free memory was 65.8MB in the beginning and 64.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:11:53,529 INFO L158 Benchmark]: Boogie Preprocessor took 19.86ms. Allocated memory is still 90.2MB. Free memory was 64.1MB in the beginning and 63.1MB in the end (delta: 921.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:11:53,530 INFO L158 Benchmark]: RCFGBuilder took 237.27ms. Allocated memory is still 90.2MB. Free memory was 63.1MB in the beginning and 51.4MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 23:11:53,530 INFO L158 Benchmark]: BuchiAutomizer took 8329.49ms. Allocated memory was 90.2MB in the beginning and 138.4MB in the end (delta: 48.2MB). Free memory was 51.4MB in the beginning and 57.2MB in the end (delta: -5.8MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2021-12-14 23:11:53,530 INFO L158 Benchmark]: Witness Printer took 26.50ms. Allocated memory is still 138.4MB. Free memory was 57.2MB in the beginning and 54.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-14 23:11:53,531 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.41ms. Allocated memory is still 90.2MB. Free memory was 57.4MB in the beginning and 65.8MB in the end (delta: -8.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.98ms. Allocated memory is still 90.2MB. Free memory was 65.8MB in the beginning and 64.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.86ms. Allocated memory is still 90.2MB. Free memory was 64.1MB in the beginning and 63.1MB in the end (delta: 921.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 237.27ms. Allocated memory is still 90.2MB. Free memory was 63.1MB in the beginning and 51.4MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 8329.49ms. Allocated memory was 90.2MB in the beginning and 138.4MB in the end (delta: 48.2MB). Free memory was 51.4MB in the beginning and 57.2MB in the end (delta: -5.8MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Witness Printer took 26.50ms. Allocated memory is still 138.4MB. Free memory was 57.2MB in the beginning and 54.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 26 terminating modules (14 trivial, 10 deterministic, 2 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -2 * blastFlag + 1 and consists of 4 locations. One deterministic module has affine ranking function -1 * s__state + 8481 and consists of 4 locations. One deterministic module has affine ranking function -1 * s__state + 8504 and consists of 4 locations. One deterministic module has affine ranking function -1 * s__state + 8520 and consists of 5 locations. One deterministic module has affine ranking function -1 * s__state + 8536 and consists of 5 locations. One deterministic module has affine ranking function 8552 + -1 * s__state and consists of 5 locations. One deterministic module has affine ranking function 5 + -2 * blastFlag and consists of 3 locations. One deterministic module has affine ranking function 8664 + -1 * s__state and consists of 5 locations. One deterministic module has affine ranking function -1 * s__state + 8568 and consists of 5 locations. One deterministic module has affine ranking function 8584 + -1 * s__state and consists of 5 locations. One nondeterministic module has affine ranking function s__state and consists of 4 locations. One nondeterministic module has affine ranking function s__state and consists of 5 locations. 14 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 719 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.2s and 17 iterations. TraceHistogramMax:6. Analysis of lassos took 4.0s. Construction of modules took 0.9s. Büchi inclusion checks took 2.6s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 26. Automata minimization 0.3s AutomataMinimizationTime, 26 MinimizatonAttempts, 1624 StatesRemovedByMinimization, 24 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 1262 states and ocurred in iteration 8. Nontrivial modules had stage [10, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/13 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1351 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1335 mSDsluCounter, 2894 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1015 mSDsCounter, 205 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1994 IncrementalHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 205 mSolverCounterUnsat, 1879 mSDtfsCounter, 1994 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT2 conc0 concLT5 SILN0 SILU0 SILI2 SILT5 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax100 hnf100 lsp67 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq193 hnf89 smp100 dnf118 smp91 tf113 neg99 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 12 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 64]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4bfc3f2d=0, s__verify_mode=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d8d78de=0, buf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3fbefaab=2, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@482aeff1=0, s__hit=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@249a7f20=0, s__state=8576, tmp___1=2, NULL=1, \result=0, s__session__peer=0, NULL=0, s__s3__tmp__new_cipher__algorithms=-256, cb=0, blastFlag=2} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 64]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L21] int s__state ; [L22] int s__hit = __VERIFIER_nondet_int() ; [L23] int s__verify_mode = __VERIFIER_nondet_int() ; [L24] int s__session__peer = __VERIFIER_nondet_int() ; [L25] unsigned long s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_long() ; [L26] int buf ; [L27] int cb ; [L28] int blastFlag ; [L29] int tmp___1; [L31] s__state = 8466 [L32] blastFlag = 0 [L34] COND TRUE 1 [L35] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L41] COND TRUE s__state == 8466 [L90] COND TRUE blastFlag == 0 [L91] blastFlag = 1 [L93] s__state = 8496 [L34] COND TRUE 1 [L35] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L41] COND FALSE !(s__state == 8466) [L44] COND TRUE s__state == 8496 [L97] COND TRUE blastFlag == 1 [L98] blastFlag = 2 [L100] COND FALSE !(\read(s__hit)) [L103] s__state = 8512 [L34] COND TRUE 1 [L35] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L41] COND FALSE !(s__state == 8466) [L44] COND FALSE !(s__state == 8496) [L48] COND TRUE s__state == 8512 [L108] s__state = 8528 [L34] COND TRUE 1 [L35] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L41] COND FALSE !(s__state == 8466) [L44] COND FALSE !(s__state == 8496) [L48] COND FALSE !(s__state == 8512) [L52] COND TRUE s__state == 8528 [L112] s__state = 8544 [L34] COND TRUE 1 [L35] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L41] COND FALSE !(s__state == 8466) [L44] COND FALSE !(s__state == 8496) [L48] COND FALSE !(s__state == 8512) [L52] COND FALSE !(s__state == 8528) [L56] COND TRUE s__state == 8544 [L116] COND TRUE s__verify_mode + 1 [L117] COND FALSE !(s__session__peer != 0) [L125] COND FALSE !(s__s3__tmp__new_cipher__algorithms + 256UL) [L133] s__state = 8576 [L34] COND TRUE 1 [L35] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L41] COND FALSE !(s__state == 8466) [L44] COND FALSE !(s__state == 8496) [L48] COND FALSE !(s__state == 8512) [L52] COND FALSE !(s__state == 8528) [L56] COND FALSE !(s__state == 8544) [L60] COND FALSE !(s__state == 8560) [L64] COND TRUE s__state == 8576 Loop: [L146] tmp___1 = __VERIFIER_nondet_int() [L147] COND TRUE tmp___1 == 2 [L148] s__state = 8466 [L34] COND TRUE 1 [L35] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L41] COND TRUE s__state == 8466 [L90] COND FALSE !(blastFlag == 0) [L93] s__state = 8496 [L34] COND TRUE 1 [L35] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L41] COND FALSE !(s__state == 8466) [L44] COND TRUE s__state == 8496 [L97] COND FALSE !(blastFlag == 1) [L100] COND FALSE !(\read(s__hit)) [L103] s__state = 8512 [L34] COND TRUE 1 [L35] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L41] COND FALSE !(s__state == 8466) [L44] COND FALSE !(s__state == 8496) [L48] COND TRUE s__state == 8512 [L108] s__state = 8528 [L34] COND TRUE 1 [L35] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L41] COND FALSE !(s__state == 8466) [L44] COND FALSE !(s__state == 8496) [L48] COND FALSE !(s__state == 8512) [L52] COND TRUE s__state == 8528 [L112] s__state = 8544 [L34] COND TRUE 1 [L35] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L41] COND FALSE !(s__state == 8466) [L44] COND FALSE !(s__state == 8496) [L48] COND FALSE !(s__state == 8512) [L52] COND FALSE !(s__state == 8528) [L56] COND TRUE s__state == 8544 [L116] COND TRUE s__verify_mode + 1 [L117] COND FALSE !(s__session__peer != 0) [L125] COND FALSE !(s__s3__tmp__new_cipher__algorithms + 256UL) [L133] s__state = 8576 [L34] COND TRUE 1 [L35] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L41] COND FALSE !(s__state == 8466) [L44] COND FALSE !(s__state == 8496) [L48] COND FALSE !(s__state == 8512) [L52] COND FALSE !(s__state == 8528) [L56] COND FALSE !(s__state == 8544) [L60] COND FALSE !(s__state == 8560) [L64] COND TRUE s__state == 8576 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-14 23:11:53,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)