./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 c3fed411 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-tmp.no-commuhash-c3fed41 [2021-12-19 17:57:16,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 17:57:16,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 17:57:16,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 17:57:16,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 17:57:16,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 17:57:16,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 17:57:16,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 17:57:16,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 17:57:16,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 17:57:16,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 17:57:16,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 17:57:16,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 17:57:16,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 17:57:16,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 17:57:16,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 17:57:16,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 17:57:16,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 17:57:16,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 17:57:16,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 17:57:16,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 17:57:16,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 17:57:16,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 17:57:16,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 17:57:16,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 17:57:16,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 17:57:16,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 17:57:16,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 17:57:16,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 17:57:16,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 17:57:16,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 17:57:16,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 17:57:16,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 17:57:16,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 17:57:16,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 17:57:16,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 17:57:16,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 17:57:16,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 17:57:16,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 17:57:16,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 17:57:16,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 17:57:16,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-19 17:57:16,324 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 17:57:16,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 17:57:16,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 17:57:16,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 17:57:16,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 17:57:16,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 17:57:16,332 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 17:57:16,332 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 17:57:16,333 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 17:57:16,333 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 17:57:16,333 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 17:57:16,333 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 17:57:16,333 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 17:57:16,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 17:57:16,333 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 17:57:16,334 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 17:57:16,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 17:57:16,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 17:57:16,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 17:57:16,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 17:57:16,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 17:57:16,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 17:57:16,334 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 17:57:16,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 17:57:16,335 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 17:57:16,335 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 17:57:16,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 17:57:16,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 17:57:16,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 17:57:16,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 17:57:16,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 17:57:16,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 17:57:16,336 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 17:57:16,337 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bbd8ebbfdd1aa7b2aaa2f32f767526fd317d11dcf6b707f4c34423040b4383f [2021-12-19 17:57:16,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 17:57:16,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 17:57:16,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 17:57:16,538 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 17:57:16,538 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 17:57:16,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c [2021-12-19 17:57:16,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9e92c0fe/d981f79686ee4d81b6fd38d5b5d48c45/FLAGb3d15985d [2021-12-19 17:57:16,947 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 17:57:16,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c [2021-12-19 17:57:16,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9e92c0fe/d981f79686ee4d81b6fd38d5b5d48c45/FLAGb3d15985d [2021-12-19 17:57:17,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9e92c0fe/d981f79686ee4d81b6fd38d5b5d48c45 [2021-12-19 17:57:17,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 17:57:17,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 17:57:17,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 17:57:17,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 17:57:17,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 17:57:17,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:57:17" (1/1) ... [2021-12-19 17:57:17,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2938fa1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:57:17, skipping insertion in model container [2021-12-19 17:57:17,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:57:17" (1/1) ... [2021-12-19 17:57:17,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 17:57:17,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 17:57:17,548 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] [2021-12-19 17:57:17,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:57:17,555 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 17:57:17,567 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] [2021-12-19 17:57:17,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:57:17,576 INFO L208 MainTranslator]: Completed translation [2021-12-19 17:57:17,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:57:17 WrapperNode [2021-12-19 17:57:17,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 17:57:17,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 17:57:17,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 17:57:17,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 17:57:17,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:57:17" (1/1) ... [2021-12-19 17:57:17,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:57:17" (1/1) ... [2021-12-19 17:57:17,597 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 135 [2021-12-19 17:57:17,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 17:57:17,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 17:57:17,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 17:57:17,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 17:57:17,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:57:17" (1/1) ... [2021-12-19 17:57:17,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:57:17" (1/1) ... [2021-12-19 17:57:17,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:57:17" (1/1) ... [2021-12-19 17:57:17,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:57:17" (1/1) ... [2021-12-19 17:57:17,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:57:17" (1/1) ... [2021-12-19 17:57:17,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:57:17" (1/1) ... [2021-12-19 17:57:17,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:57:17" (1/1) ... [2021-12-19 17:57:17,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 17:57:17,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 17:57:17,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 17:57:17,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 17:57:17,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:57:17" (1/1) ... [2021-12-19 17:57:17,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:17,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:17,646 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) [2021-12-19 17:57:17,649 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 [2021-12-19 17:57:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 17:57:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 17:57:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 17:57:17,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 17:57:17,721 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 17:57:17,722 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 17:57:17,888 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 17:57:17,892 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 17:57:17,892 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-19 17:57:17,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:57:17 BoogieIcfgContainer [2021-12-19 17:57:17,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 17:57:17,894 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 17:57:17,894 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 17:57:17,909 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 17:57:17,909 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:57:17,909 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 05:57:17" (1/3) ... [2021-12-19 17:57:17,910 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@bd47ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:57:17, skipping insertion in model container [2021-12-19 17:57:17,910 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:57:17,910 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:57:17" (2/3) ... [2021-12-19 17:57:17,911 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@bd47ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:57:17, skipping insertion in model container [2021-12-19 17:57:17,911 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:57:17,911 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:57:17" (3/3) ... [2021-12-19 17:57:17,912 INFO L388 chiAutomizerObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2021-12-19 17:57:17,937 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 17:57:17,937 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 17:57:17,937 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 17:57:17,938 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 17:57:17,938 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 17:57:17,938 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 17:57:17,938 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 17:57:17,938 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 17:57:17,950 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) [2021-12-19 17:57:17,962 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-12-19 17:57:17,962 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:57:17,963 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:57:17,967 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:57:17,969 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-19 17:57:17,969 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 17:57:17,969 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) [2021-12-19 17:57:17,971 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-12-19 17:57:17,972 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:57:17,973 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:57:17,973 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:57:17,973 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-19 17:57:17,979 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 [2021-12-19 17:57:17,980 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 [2021-12-19 17:57:17,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:17,990 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-19 17:57:17,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:18,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337526433] [2021-12-19 17:57:18,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:18,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:18,067 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:18,083 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:18,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:18,085 INFO L85 PathProgramCache]: Analyzing trace with hash 39285361, now seen corresponding path program 1 times [2021-12-19 17:57:18,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:18,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234582870] [2021-12-19 17:57:18,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:18,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:18,101 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:18,104 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:18,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:18,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724847, now seen corresponding path program 1 times [2021-12-19 17:57:18,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:18,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408292959] [2021-12-19 17:57:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:18,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:18,113 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:18,120 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:18,171 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:18,172 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:18,172 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:18,172 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:18,172 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:57:18,172 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:18,172 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:18,172 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:18,173 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration1_Loop [2021-12-19 17:57:18,173 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:18,173 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:18,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:18,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:18,223 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:18,223 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:57:18,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:18,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:18,226 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) [2021-12-19 17:57:18,235 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 [2021-12-19 17:57:18,236 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:57:18,236 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:18,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-12-19 17:57:18,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:18,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:18,262 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) [2021-12-19 17:57:18,281 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 [2021-12-19 17:57:18,282 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:57:18,282 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:18,305 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:57:18,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-19 17:57:18,323 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:18,324 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:18,324 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:18,324 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:18,324 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:57:18,324 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:18,324 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:18,324 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:18,324 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration1_Loop [2021-12-19 17:57:18,324 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:18,324 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:18,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:18,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:18,380 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:18,383 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:57:18,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:18,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:18,396 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) [2021-12-19 17:57:18,431 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 [2021-12-19 17:57:18,431 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 [2021-12-19 17:57:18,438 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:57:18,438 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:57:18,439 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:57:18,439 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:57:18,439 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:57:18,442 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:57:18,442 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:57:18,453 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:57:18,474 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:57:18,475 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:57:18,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:18,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:18,485 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) [2021-12-19 17:57:18,486 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 [2021-12-19 17:57:18,528 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:57:18,528 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:57:18,528 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:57:18,529 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 [] [2021-12-19 17:57:18,544 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 [2021-12-19 17:57:18,547 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:57:18,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:18,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:57:18,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:18,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:57:18,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:18,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:18,669 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 [2021-12-19 17:57:18,671 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) [2021-12-19 17:57:18,748 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. [2021-12-19 17:57:18,750 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 [2021-12-19 17:57:18,753 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) [2021-12-19 17:57:18,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2021-12-19 17:57:18,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 81 transitions. Stem has 2 letters. Loop has 5 letters. [2021-12-19 17:57:18,756 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:18,756 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 81 transitions. Stem has 7 letters. Loop has 5 letters. [2021-12-19 17:57:18,756 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:18,756 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 81 transitions. Stem has 2 letters. Loop has 10 letters. [2021-12-19 17:57:18,756 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:18,757 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 96 states and 154 transitions. [2021-12-19 17:57:18,761 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-12-19 17:57:18,765 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 96 states to 82 states and 129 transitions. [2021-12-19 17:57:18,766 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-12-19 17:57:18,766 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-12-19 17:57:18,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 129 transitions. [2021-12-19 17:57:18,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:18,767 INFO L681 BuchiCegarLoop]: Abstraction has 82 states and 129 transitions. [2021-12-19 17:57:18,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states and 129 transitions. [2021-12-19 17:57:18,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2021-12-19 17:57:18,788 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) [2021-12-19 17:57:18,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 127 transitions. [2021-12-19 17:57:18,793 INFO L704 BuchiCegarLoop]: Abstraction has 80 states and 127 transitions. [2021-12-19 17:57:18,793 INFO L587 BuchiCegarLoop]: Abstraction has 80 states and 127 transitions. [2021-12-19 17:57:18,793 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-19 17:57:18,794 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states and 127 transitions. [2021-12-19 17:57:18,795 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-12-19 17:57:18,798 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:57:18,798 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:57:18,798 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-19 17:57:18,799 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-19 17:57:18,799 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 [2021-12-19 17:57:18,799 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 [2021-12-19 17:57:18,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:18,800 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-19 17:57:18,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:18,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544546682] [2021-12-19 17:57:18,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:18,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:18,810 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:18,815 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:18,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:18,816 INFO L85 PathProgramCache]: Analyzing trace with hash 44052933, now seen corresponding path program 1 times [2021-12-19 17:57:18,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:18,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993670885] [2021-12-19 17:57:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:18,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:18,819 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:18,821 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:18,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:18,822 INFO L85 PathProgramCache]: Analyzing trace with hash 297897342, now seen corresponding path program 1 times [2021-12-19 17:57:18,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:18,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42411754] [2021-12-19 17:57:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:18,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:18,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:57:18,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42411754] [2021-12-19 17:57:18,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42411754] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:57:18,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:57:18,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:57:18,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471275584] [2021-12-19 17:57:18,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:57:18,906 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:18,906 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:18,906 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:18,906 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:18,906 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:57:18,906 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:18,906 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:18,906 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:18,907 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration2_Loop [2021-12-19 17:57:18,907 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:18,907 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:18,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:18,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:18,944 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:18,944 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:57:18,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:18,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:18,960 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) [2021-12-19 17:57:18,961 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 [2021-12-19 17:57:18,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:57:18,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:19,000 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 [2021-12-19 17:57:19,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:19,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:19,002 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) [2021-12-19 17:57:19,003 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 [2021-12-19 17:57:19,005 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:57:19,005 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:19,023 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:57:19,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-19 17:57:19,040 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:19,040 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:19,040 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:19,040 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:19,043 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:57:19,043 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:19,043 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:19,043 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:19,043 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration2_Loop [2021-12-19 17:57:19,043 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:19,043 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:19,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:19,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:19,090 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:19,090 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:57:19,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:19,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:19,091 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) [2021-12-19 17:57:19,093 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 [2021-12-19 17:57:19,095 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 [2021-12-19 17:57:19,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:57:19,101 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:57:19,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:57:19,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:57:19,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:57:19,103 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:57:19,103 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:57:19,106 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:57:19,109 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:57:19,109 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:57:19,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:19,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:19,110 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) [2021-12-19 17:57:19,111 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 [2021-12-19 17:57:19,112 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:57:19,113 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:57:19,113 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:57:19,113 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 [] [2021-12-19 17:57:19,128 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 [2021-12-19 17:57:19,129 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:57:19,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:19,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:57:19,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:19,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:57:19,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:19,224 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 [2021-12-19 17:57:19,224 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) [2021-12-19 17:57:19,278 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 [2021-12-19 17:57:19,315 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 [2021-12-19 17:57:19,335 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. [2021-12-19 17:57:19,335 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 [2021-12-19 17:57:19,336 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) [2021-12-19 17:57:19,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2021-12-19 17:57:19,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 49 transitions. Stem has 3 letters. Loop has 5 letters. [2021-12-19 17:57:19,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:19,338 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 49 transitions. Stem has 8 letters. Loop has 5 letters. [2021-12-19 17:57:19,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:19,338 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 49 transitions. Stem has 3 letters. Loop has 10 letters. [2021-12-19 17:57:19,340 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:19,340 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 236 states and 345 transitions. [2021-12-19 17:57:19,346 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-12-19 17:57:19,350 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 236 states to 165 states and 261 transitions. [2021-12-19 17:57:19,352 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2021-12-19 17:57:19,352 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 79 [2021-12-19 17:57:19,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 165 states and 261 transitions. [2021-12-19 17:57:19,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:19,353 INFO L681 BuchiCegarLoop]: Abstraction has 165 states and 261 transitions. [2021-12-19 17:57:19,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states and 261 transitions. [2021-12-19 17:57:19,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 98. [2021-12-19 17:57:19,359 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) [2021-12-19 17:57:19,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 152 transitions. [2021-12-19 17:57:19,361 INFO L704 BuchiCegarLoop]: Abstraction has 98 states and 152 transitions. [2021-12-19 17:57:19,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:57:19,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:57:19,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:57:19,368 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) [2021-12-19 17:57:19,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:57:19,402 INFO L93 Difference]: Finished difference Result 178 states and 266 transitions. [2021-12-19 17:57:19,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:57:19,403 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 178 states and 266 transitions. [2021-12-19 17:57:19,408 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 74 [2021-12-19 17:57:19,413 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 178 states to 175 states and 263 transitions. [2021-12-19 17:57:19,414 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2021-12-19 17:57:19,414 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 82 [2021-12-19 17:57:19,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 175 states and 263 transitions. [2021-12-19 17:57:19,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:19,415 INFO L681 BuchiCegarLoop]: Abstraction has 175 states and 263 transitions. [2021-12-19 17:57:19,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states and 263 transitions. [2021-12-19 17:57:19,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2021-12-19 17:57:19,424 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) [2021-12-19 17:57:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 261 transitions. [2021-12-19 17:57:19,427 INFO L704 BuchiCegarLoop]: Abstraction has 173 states and 261 transitions. [2021-12-19 17:57:19,427 INFO L587 BuchiCegarLoop]: Abstraction has 173 states and 261 transitions. [2021-12-19 17:57:19,427 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-19 17:57:19,427 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 173 states and 261 transitions. [2021-12-19 17:57:19,428 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 74 [2021-12-19 17:57:19,428 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:57:19,428 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:57:19,429 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-19 17:57:19,429 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-19 17:57:19,430 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 [2021-12-19 17:57:19,431 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 [2021-12-19 17:57:19,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:19,431 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2021-12-19 17:57:19,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:19,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257832423] [2021-12-19 17:57:19,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:19,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:19,439 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:19,443 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:19,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:19,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1365768499, now seen corresponding path program 1 times [2021-12-19 17:57:19,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:19,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674372679] [2021-12-19 17:57:19,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:19,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:19,447 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:19,449 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:19,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:19,449 INFO L85 PathProgramCache]: Analyzing trace with hash 645010586, now seen corresponding path program 1 times [2021-12-19 17:57:19,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:19,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945361593] [2021-12-19 17:57:19,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:19,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:19,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:57:19,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945361593] [2021-12-19 17:57:19,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945361593] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:57:19,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:57:19,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:57:19,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094754770] [2021-12-19 17:57:19,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:57:19,489 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:19,489 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:19,489 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:19,490 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:19,490 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:57:19,490 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:19,490 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:19,490 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:19,490 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration3_Loop [2021-12-19 17:57:19,490 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:19,490 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:19,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:19,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:19,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:19,528 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:19,528 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:57:19,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:19,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:19,539 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) [2021-12-19 17:57:19,541 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 [2021-12-19 17:57:19,542 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:57:19,542 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:19,568 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:57:19,568 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: [] [2021-12-19 17:57:19,584 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 [2021-12-19 17:57:19,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:19,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:19,586 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) [2021-12-19 17:57:19,614 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:57:19,614 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:19,619 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 [2021-12-19 17:57:19,663 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 [2021-12-19 17:57:19,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:19,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:19,665 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) [2021-12-19 17:57:19,666 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 [2021-12-19 17:57:19,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:57:19,667 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:19,695 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:57:19,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-19 17:57:19,711 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:19,711 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:19,711 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:19,711 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:19,712 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:57:19,712 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:19,712 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:19,712 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:19,712 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration3_Loop [2021-12-19 17:57:19,712 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:19,712 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:19,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:19,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:19,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:19,758 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:19,758 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:57:19,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:19,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:19,760 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) [2021-12-19 17:57:19,779 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 [2021-12-19 17:57:19,780 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 [2021-12-19 17:57:19,787 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:57:19,787 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:57:19,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:57:19,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:57:19,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:57:19,788 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:57:19,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:57:19,803 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:57:19,831 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 [2021-12-19 17:57:19,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:19,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:19,833 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) [2021-12-19 17:57:19,834 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 [2021-12-19 17:57:19,836 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 [2021-12-19 17:57:19,842 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:57:19,842 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:57:19,842 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:57:19,842 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:57:19,842 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:57:19,844 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:57:19,844 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:57:19,859 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:57:19,862 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:57:19,862 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:57:19,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:19,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:19,863 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) [2021-12-19 17:57:19,865 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 [2021-12-19 17:57:19,866 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:57:19,866 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:57:19,866 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:57:19,866 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 [] [2021-12-19 17:57:19,883 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 [2021-12-19 17:57:19,883 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:57:19,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:19,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:57:19,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:19,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:57:19,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:19,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:19,958 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 [2021-12-19 17:57:19,959 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) [2021-12-19 17:57:20,062 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. [2021-12-19 17:57:20,062 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 [2021-12-19 17:57:20,063 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) [2021-12-19 17:57:20,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2021-12-19 17:57:20,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 84 transitions. Stem has 3 letters. Loop has 6 letters. [2021-12-19 17:57:20,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:20,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 84 transitions. Stem has 9 letters. Loop has 6 letters. [2021-12-19 17:57:20,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:20,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 84 transitions. Stem has 3 letters. Loop has 12 letters. [2021-12-19 17:57:20,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:20,064 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 574 states and 822 transitions. [2021-12-19 17:57:20,068 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 79 [2021-12-19 17:57:20,070 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 574 states to 406 states and 614 transitions. [2021-12-19 17:57:20,070 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 149 [2021-12-19 17:57:20,071 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 179 [2021-12-19 17:57:20,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 406 states and 614 transitions. [2021-12-19 17:57:20,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:20,071 INFO L681 BuchiCegarLoop]: Abstraction has 406 states and 614 transitions. [2021-12-19 17:57:20,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states and 614 transitions. [2021-12-19 17:57:20,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 238. [2021-12-19 17:57:20,078 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) [2021-12-19 17:57:20,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 352 transitions. [2021-12-19 17:57:20,079 INFO L704 BuchiCegarLoop]: Abstraction has 238 states and 352 transitions. [2021-12-19 17:57:20,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:57:20,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:57:20,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:57:20,080 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) [2021-12-19 17:57:20,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:57:20,109 INFO L93 Difference]: Finished difference Result 153 states and 222 transitions. [2021-12-19 17:57:20,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:57:20,110 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 153 states and 222 transitions. [2021-12-19 17:57:20,111 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2021-12-19 17:57:20,111 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 153 states to 148 states and 217 transitions. [2021-12-19 17:57:20,111 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2021-12-19 17:57:20,112 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2021-12-19 17:57:20,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 148 states and 217 transitions. [2021-12-19 17:57:20,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:20,112 INFO L681 BuchiCegarLoop]: Abstraction has 148 states and 217 transitions. [2021-12-19 17:57:20,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states and 217 transitions. [2021-12-19 17:57:20,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-12-19 17:57:20,115 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) [2021-12-19 17:57:20,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 217 transitions. [2021-12-19 17:57:20,115 INFO L704 BuchiCegarLoop]: Abstraction has 148 states and 217 transitions. [2021-12-19 17:57:20,115 INFO L587 BuchiCegarLoop]: Abstraction has 148 states and 217 transitions. [2021-12-19 17:57:20,116 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-19 17:57:20,116 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 148 states and 217 transitions. [2021-12-19 17:57:20,116 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2021-12-19 17:57:20,116 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:57:20,116 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:57:20,117 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:57:20,117 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-19 17:57:20,117 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 [2021-12-19 17:57:20,117 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 [2021-12-19 17:57:20,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:20,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1200039737, now seen corresponding path program 1 times [2021-12-19 17:57:20,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:20,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416926589] [2021-12-19 17:57:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:20,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:20,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:20,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:57:20,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416926589] [2021-12-19 17:57:20,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416926589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:57:20,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:57:20,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 17:57:20,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190737046] [2021-12-19 17:57:20,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:57:20,133 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 17:57:20,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:20,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1809521393, now seen corresponding path program 1 times [2021-12-19 17:57:20,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:20,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588095248] [2021-12-19 17:57:20,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:20,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:20,136 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:20,139 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:20,150 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:20,150 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:20,151 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:20,151 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:20,151 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:57:20,151 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:20,151 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:20,151 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:20,151 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration4_Loop [2021-12-19 17:57:20,151 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:20,151 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:20,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:20,164 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:20,164 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:57:20,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:20,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:20,176 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) [2021-12-19 17:57:20,177 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 [2021-12-19 17:57:20,178 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:57:20,178 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:20,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-12-19 17:57:20,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:20,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:20,240 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) [2021-12-19 17:57:20,241 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 [2021-12-19 17:57:20,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:57:20,242 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:20,264 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:57:20,282 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 [2021-12-19 17:57:20,282 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:20,282 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:20,282 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:20,282 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:20,282 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:57:20,282 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:20,282 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:20,282 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:20,282 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration4_Loop [2021-12-19 17:57:20,282 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:20,283 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:20,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:20,297 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:20,298 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:57:20,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:20,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:20,312 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) [2021-12-19 17:57:20,313 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 [2021-12-19 17:57:20,315 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 [2021-12-19 17:57:20,322 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:57:20,322 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:57:20,322 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:57:20,322 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:57:20,322 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:57:20,323 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:57:20,323 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:57:20,337 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:57:20,339 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:57:20,339 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:57:20,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:20,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:20,340 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) [2021-12-19 17:57:20,368 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 [2021-12-19 17:57:20,368 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:57:20,368 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:57:20,368 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:57:20,368 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 [] [2021-12-19 17:57:20,387 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 [2021-12-19 17:57:20,388 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:57:20,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:20,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:57:20,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:20,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:57:20,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:20,458 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 [2021-12-19 17:57:20,458 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) [2021-12-19 17:57:20,574 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. [2021-12-19 17:57:20,575 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 [2021-12-19 17:57:20,575 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) [2021-12-19 17:57:20,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2021-12-19 17:57:20,576 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 130 transitions. Stem has 11 letters. Loop has 6 letters. [2021-12-19 17:57:20,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:20,576 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 130 transitions. Stem has 17 letters. Loop has 6 letters. [2021-12-19 17:57:20,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:20,576 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 130 transitions. Stem has 11 letters. Loop has 12 letters. [2021-12-19 17:57:20,577 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:20,577 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 460 states and 687 transitions. [2021-12-19 17:57:20,579 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 62 [2021-12-19 17:57:20,602 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 460 states to 361 states and 555 transitions. [2021-12-19 17:57:20,603 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2021-12-19 17:57:20,603 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2021-12-19 17:57:20,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 361 states and 555 transitions. [2021-12-19 17:57:20,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:20,604 INFO L681 BuchiCegarLoop]: Abstraction has 361 states and 555 transitions. [2021-12-19 17:57:20,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states and 555 transitions. [2021-12-19 17:57:20,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 206. [2021-12-19 17:57:20,608 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) [2021-12-19 17:57:20,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 304 transitions. [2021-12-19 17:57:20,608 INFO L704 BuchiCegarLoop]: Abstraction has 206 states and 304 transitions. [2021-12-19 17:57:20,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:57:20,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:57:20,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:57:20,609 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) [2021-12-19 17:57:20,610 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 [2021-12-19 17:57:20,629 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 [2021-12-19 17:57:20,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:57:20,668 INFO L93 Difference]: Finished difference Result 225 states and 313 transitions. [2021-12-19 17:57:20,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:57:20,669 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 225 states and 313 transitions. [2021-12-19 17:57:20,670 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 57 [2021-12-19 17:57:20,671 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 225 states to 210 states and 296 transitions. [2021-12-19 17:57:20,671 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 71 [2021-12-19 17:57:20,671 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 71 [2021-12-19 17:57:20,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 210 states and 296 transitions. [2021-12-19 17:57:20,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:20,671 INFO L681 BuchiCegarLoop]: Abstraction has 210 states and 296 transitions. [2021-12-19 17:57:20,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states and 296 transitions. [2021-12-19 17:57:20,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 199. [2021-12-19 17:57:20,673 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) [2021-12-19 17:57:20,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 284 transitions. [2021-12-19 17:57:20,674 INFO L704 BuchiCegarLoop]: Abstraction has 199 states and 284 transitions. [2021-12-19 17:57:20,674 INFO L587 BuchiCegarLoop]: Abstraction has 199 states and 284 transitions. [2021-12-19 17:57:20,674 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-19 17:57:20,674 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 199 states and 284 transitions. [2021-12-19 17:57:20,675 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2021-12-19 17:57:20,675 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:57:20,675 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:57:20,676 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:57:20,676 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:57:20,676 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 [2021-12-19 17:57:20,676 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 [2021-12-19 17:57:20,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:20,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1540003514, now seen corresponding path program 1 times [2021-12-19 17:57:20,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:20,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595004768] [2021-12-19 17:57:20,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:20,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:20,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:57:20,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595004768] [2021-12-19 17:57:20,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595004768] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:57:20,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:57:20,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:57:20,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422662472] [2021-12-19 17:57:20,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:57:20,692 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 17:57:20,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:20,692 INFO L85 PathProgramCache]: Analyzing trace with hash 460397777, now seen corresponding path program 1 times [2021-12-19 17:57:20,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:20,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824035220] [2021-12-19 17:57:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:20,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:20,695 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:20,697 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:20,709 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:20,709 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:20,709 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:20,709 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:20,709 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:57:20,709 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:20,709 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:20,710 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:20,710 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration5_Loop [2021-12-19 17:57:20,710 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:20,710 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:20,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:20,721 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:20,722 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:57:20,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:20,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:20,723 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) [2021-12-19 17:57:20,728 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 [2021-12-19 17:57:20,731 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:57:20,731 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:20,755 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 [2021-12-19 17:57:20,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:20,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:20,756 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) [2021-12-19 17:57:20,756 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 [2021-12-19 17:57:20,758 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:57:20,758 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:20,766 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:57:20,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-12-19 17:57:20,782 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:20,782 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:20,783 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:20,783 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:20,783 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:57:20,783 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:20,783 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:20,783 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:20,783 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration5_Loop [2021-12-19 17:57:20,783 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:20,783 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:20,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:20,806 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:20,806 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:57:20,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:20,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:20,820 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) [2021-12-19 17:57:20,836 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 [2021-12-19 17:57:20,836 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 [2021-12-19 17:57:20,843 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:57:20,843 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:57:20,843 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:57:20,844 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:57:20,844 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:57:20,845 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:57:20,845 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:57:20,859 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:57:20,861 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:57:20,861 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:57:20,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:20,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:20,863 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) [2021-12-19 17:57:20,864 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 [2021-12-19 17:57:20,865 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:57:20,865 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:57:20,865 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:57:20,865 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 [] [2021-12-19 17:57:20,883 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 [2021-12-19 17:57:20,883 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:57:20,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:20,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:57:20,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:20,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:57:20,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:20,986 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 [2021-12-19 17:57:20,986 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) [2021-12-19 17:57:21,094 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. [2021-12-19 17:57:21,095 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 [2021-12-19 17:57:21,095 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) [2021-12-19 17:57:21,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2021-12-19 17:57:21,095 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 135 transitions. Stem has 18 letters. Loop has 7 letters. [2021-12-19 17:57:21,096 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:21,096 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 135 transitions. Stem has 25 letters. Loop has 7 letters. [2021-12-19 17:57:21,096 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:21,096 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 135 transitions. Stem has 18 letters. Loop has 14 letters. [2021-12-19 17:57:21,096 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:21,096 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 529 states and 778 transitions. [2021-12-19 17:57:21,099 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 80 [2021-12-19 17:57:21,100 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 529 states to 438 states and 654 transitions. [2021-12-19 17:57:21,100 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 125 [2021-12-19 17:57:21,101 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 158 [2021-12-19 17:57:21,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 438 states and 654 transitions. [2021-12-19 17:57:21,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:21,101 INFO L681 BuchiCegarLoop]: Abstraction has 438 states and 654 transitions. [2021-12-19 17:57:21,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states and 654 transitions. [2021-12-19 17:57:21,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 285. [2021-12-19 17:57:21,104 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) [2021-12-19 17:57:21,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 407 transitions. [2021-12-19 17:57:21,105 INFO L704 BuchiCegarLoop]: Abstraction has 285 states and 407 transitions. [2021-12-19 17:57:21,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:57:21,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:57:21,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:57:21,106 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) [2021-12-19 17:57:21,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:57:21,117 INFO L93 Difference]: Finished difference Result 342 states and 464 transitions. [2021-12-19 17:57:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:57:21,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 342 states and 464 transitions. [2021-12-19 17:57:21,119 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 70 [2021-12-19 17:57:21,120 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 342 states to 342 states and 464 transitions. [2021-12-19 17:57:21,120 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 105 [2021-12-19 17:57:21,120 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 105 [2021-12-19 17:57:21,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 464 transitions. [2021-12-19 17:57:21,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:21,120 INFO L681 BuchiCegarLoop]: Abstraction has 342 states and 464 transitions. [2021-12-19 17:57:21,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 464 transitions. [2021-12-19 17:57:21,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2021-12-19 17:57:21,123 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) [2021-12-19 17:57:21,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 464 transitions. [2021-12-19 17:57:21,124 INFO L704 BuchiCegarLoop]: Abstraction has 342 states and 464 transitions. [2021-12-19 17:57:21,124 INFO L587 BuchiCegarLoop]: Abstraction has 342 states and 464 transitions. [2021-12-19 17:57:21,124 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-19 17:57:21,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 342 states and 464 transitions. [2021-12-19 17:57:21,125 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 70 [2021-12-19 17:57:21,125 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:57:21,125 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:57:21,126 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:57:21,126 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:57:21,126 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 [2021-12-19 17:57:21,126 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 [2021-12-19 17:57:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1304815340, now seen corresponding path program 1 times [2021-12-19 17:57:21,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:21,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920136943] [2021-12-19 17:57:21,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:21,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:21,146 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:21,151 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:21,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:21,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1040610643, now seen corresponding path program 1 times [2021-12-19 17:57:21,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:21,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480797810] [2021-12-19 17:57:21,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:21,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:21,155 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:21,157 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:21,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:21,157 INFO L85 PathProgramCache]: Analyzing trace with hash 290150040, now seen corresponding path program 1 times [2021-12-19 17:57:21,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:21,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476640945] [2021-12-19 17:57:21,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:21,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-19 17:57:21,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:57:21,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476640945] [2021-12-19 17:57:21,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476640945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:57:21,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:57:21,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:57:21,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805201280] [2021-12-19 17:57:21,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:57:21,194 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:21,194 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:21,195 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:21,195 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:21,195 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:57:21,195 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:21,195 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:21,195 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:21,195 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration6_Loop [2021-12-19 17:57:21,195 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:21,195 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:21,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:21,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:21,219 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:21,219 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:57:21,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:21,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:21,240 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) [2021-12-19 17:57:21,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:57:21,242 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:21,255 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 [2021-12-19 17:57:21,297 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 [2021-12-19 17:57:21,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:21,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:21,299 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) [2021-12-19 17:57:21,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:57:21,317 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:21,326 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 [2021-12-19 17:57:21,334 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:57:21,369 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 [2021-12-19 17:57:21,369 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:21,369 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:21,369 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:21,369 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:21,369 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:57:21,369 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:21,369 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:21,369 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:21,369 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration6_Loop [2021-12-19 17:57:21,369 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:21,369 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:21,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:21,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:21,393 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:21,393 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:57:21,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:21,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:21,405 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) [2021-12-19 17:57:21,406 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 [2021-12-19 17:57:21,407 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 [2021-12-19 17:57:21,413 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:57:21,413 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:57:21,413 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:57:21,413 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:57:21,413 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:57:21,414 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:57:21,414 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:57:21,416 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:57:21,418 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:57:21,418 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:57:21,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:21,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:21,419 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) [2021-12-19 17:57:21,420 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 [2021-12-19 17:57:21,421 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:57:21,421 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:57:21,421 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:57:21,421 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 [] [2021-12-19 17:57:21,436 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 [2021-12-19 17:57:21,437 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:57:21,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:21,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:57:21,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:21,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:57:21,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:21,551 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 [2021-12-19 17:57:21,551 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) [2021-12-19 17:57:21,705 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 [2021-12-19 17:57:21,721 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. [2021-12-19 17:57:21,722 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 [2021-12-19 17:57:21,722 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) [2021-12-19 17:57:21,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2021-12-19 17:57:21,722 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 142 transitions. Stem has 19 letters. Loop has 8 letters. [2021-12-19 17:57:21,723 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:21,723 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 142 transitions. Stem has 27 letters. Loop has 8 letters. [2021-12-19 17:57:21,723 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:21,723 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 142 transitions. Stem has 19 letters. Loop has 16 letters. [2021-12-19 17:57:21,723 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:21,723 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 692 states and 980 transitions. [2021-12-19 17:57:21,726 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 98 [2021-12-19 17:57:21,729 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 692 states to 609 states and 865 transitions. [2021-12-19 17:57:21,729 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 164 [2021-12-19 17:57:21,729 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 193 [2021-12-19 17:57:21,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 609 states and 865 transitions. [2021-12-19 17:57:21,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:21,729 INFO L681 BuchiCegarLoop]: Abstraction has 609 states and 865 transitions. [2021-12-19 17:57:21,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states and 865 transitions. [2021-12-19 17:57:21,733 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 [2021-12-19 17:57:21,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 469. [2021-12-19 17:57:21,736 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) [2021-12-19 17:57:21,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 646 transitions. [2021-12-19 17:57:21,738 INFO L704 BuchiCegarLoop]: Abstraction has 469 states and 646 transitions. [2021-12-19 17:57:21,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:57:21,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:57:21,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:57:21,738 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) [2021-12-19 17:57:21,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:57:21,784 INFO L93 Difference]: Finished difference Result 583 states and 762 transitions. [2021-12-19 17:57:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:57:21,785 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 583 states and 762 transitions. [2021-12-19 17:57:21,787 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 100 [2021-12-19 17:57:21,789 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 583 states to 547 states and 726 transitions. [2021-12-19 17:57:21,789 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 169 [2021-12-19 17:57:21,790 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 173 [2021-12-19 17:57:21,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 547 states and 726 transitions. [2021-12-19 17:57:21,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:21,790 INFO L681 BuchiCegarLoop]: Abstraction has 547 states and 726 transitions. [2021-12-19 17:57:21,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states and 726 transitions. [2021-12-19 17:57:21,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 493. [2021-12-19 17:57:21,794 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) [2021-12-19 17:57:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 670 transitions. [2021-12-19 17:57:21,796 INFO L704 BuchiCegarLoop]: Abstraction has 493 states and 670 transitions. [2021-12-19 17:57:21,796 INFO L587 BuchiCegarLoop]: Abstraction has 493 states and 670 transitions. [2021-12-19 17:57:21,796 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-19 17:57:21,796 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 493 states and 670 transitions. [2021-12-19 17:57:21,797 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 98 [2021-12-19 17:57:21,797 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:57:21,797 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:57:21,798 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:57:21,798 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:57:21,798 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 [2021-12-19 17:57:21,798 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 [2021-12-19 17:57:21,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:21,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2108014467, now seen corresponding path program 1 times [2021-12-19 17:57:21,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:21,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506730801] [2021-12-19 17:57:21,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:21,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:21,804 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:21,807 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:21,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:21,808 INFO L85 PathProgramCache]: Analyzing trace with hash -318790614, now seen corresponding path program 1 times [2021-12-19 17:57:21,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:21,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621659649] [2021-12-19 17:57:21,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:21,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:21,824 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:21,827 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:21,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:21,828 INFO L85 PathProgramCache]: Analyzing trace with hash -444277714, now seen corresponding path program 1 times [2021-12-19 17:57:21,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:21,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984121138] [2021-12-19 17:57:21,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:21,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:21,832 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:21,837 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:21,881 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:21,881 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:21,881 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:21,882 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:21,882 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:57:21,882 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:21,882 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:21,882 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:21,882 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration7_Loop [2021-12-19 17:57:21,882 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:21,882 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:21,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:21,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:21,917 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:21,918 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:57:21,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:21,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:21,944 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) [2021-12-19 17:57:21,944 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 [2021-12-19 17:57:21,946 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:57:21,946 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:21,971 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 [2021-12-19 17:57:21,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:21,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:21,973 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) [2021-12-19 17:57:21,973 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 [2021-12-19 17:57:21,975 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:57:21,975 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:21,982 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:57:21,998 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 [2021-12-19 17:57:21,999 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:21,999 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:21,999 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:21,999 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:21,999 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:57:21,999 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:21,999 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:21,999 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:21,999 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration7_Loop [2021-12-19 17:57:21,999 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:21,999 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:21,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:22,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:22,033 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:22,034 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:57:22,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:22,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:22,037 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) [2021-12-19 17:57:22,038 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 [2021-12-19 17:57:22,040 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 [2021-12-19 17:57:22,045 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:57:22,046 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:57:22,046 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:57:22,046 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:57:22,046 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:57:22,047 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:57:22,047 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:57:22,058 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:57:22,059 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:57:22,059 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:57:22,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:22,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:22,070 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) [2021-12-19 17:57:22,071 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 [2021-12-19 17:57:22,072 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:57:22,072 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:57:22,072 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:57:22,072 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 [] [2021-12-19 17:57:22,089 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 [2021-12-19 17:57:22,090 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:57:22,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:22,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:57:22,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:22,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:57:22,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:22,217 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 [2021-12-19 17:57:22,217 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) [2021-12-19 17:57:22,234 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. [2021-12-19 17:57:22,234 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 [2021-12-19 17:57:22,236 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) [2021-12-19 17:57:22,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2021-12-19 17:57:22,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 129 transitions. Stem has 13 letters. Loop has 15 letters. [2021-12-19 17:57:22,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:22,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 129 transitions. Stem has 28 letters. Loop has 15 letters. [2021-12-19 17:57:22,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:22,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 129 transitions. Stem has 13 letters. Loop has 30 letters. [2021-12-19 17:57:22,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:22,237 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 751 states and 1024 transitions. [2021-12-19 17:57:22,240 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 155 [2021-12-19 17:57:22,242 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 751 states to 684 states and 933 transitions. [2021-12-19 17:57:22,243 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 205 [2021-12-19 17:57:22,243 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 208 [2021-12-19 17:57:22,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 684 states and 933 transitions. [2021-12-19 17:57:22,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:22,244 INFO L681 BuchiCegarLoop]: Abstraction has 684 states and 933 transitions. [2021-12-19 17:57:22,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states and 933 transitions. [2021-12-19 17:57:22,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 678. [2021-12-19 17:57:22,257 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) [2021-12-19 17:57:22,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 926 transitions. [2021-12-19 17:57:22,275 INFO L704 BuchiCegarLoop]: Abstraction has 678 states and 926 transitions. [2021-12-19 17:57:22,275 INFO L587 BuchiCegarLoop]: Abstraction has 678 states and 926 transitions. [2021-12-19 17:57:22,275 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-19 17:57:22,275 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 678 states and 926 transitions. [2021-12-19 17:57:22,278 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 155 [2021-12-19 17:57:22,278 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:57:22,278 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:57:22,279 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:57:22,279 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:57:22,279 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 [2021-12-19 17:57:22,279 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 [2021-12-19 17:57:22,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:22,279 INFO L85 PathProgramCache]: Analyzing trace with hash -923939026, now seen corresponding path program 2 times [2021-12-19 17:57:22,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:22,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157259958] [2021-12-19 17:57:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:22,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:22,287 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:22,301 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:22,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:22,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1835507732, now seen corresponding path program 1 times [2021-12-19 17:57:22,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:22,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193966035] [2021-12-19 17:57:22,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:22,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:22,311 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:22,321 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:22,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:22,329 INFO L85 PathProgramCache]: Analyzing trace with hash -887705313, now seen corresponding path program 1 times [2021-12-19 17:57:22,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:22,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134686615] [2021-12-19 17:57:22,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:22,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:22,364 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-19 17:57:22,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:57:22,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134686615] [2021-12-19 17:57:22,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134686615] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:57:22,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:57:22,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:57:22,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332394066] [2021-12-19 17:57:22,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:57:22,392 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:22,392 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:22,392 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:22,392 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:22,393 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:57:22,393 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:22,393 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:22,393 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:22,393 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration8_Loop [2021-12-19 17:57:22,393 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:22,393 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:22,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:22,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:22,423 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:22,423 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:57:22,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:22,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:22,424 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) [2021-12-19 17:57:22,426 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 [2021-12-19 17:57:22,428 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:57:22,428 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:22,439 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:57:22,439 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: [] [2021-12-19 17:57:22,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-12-19 17:57:22,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:22,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:22,456 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) [2021-12-19 17:57:22,457 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 [2021-12-19 17:57:22,458 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:57:22,458 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:22,480 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 [2021-12-19 17:57:22,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:22,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:22,481 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) [2021-12-19 17:57:22,482 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 [2021-12-19 17:57:22,483 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:57:22,483 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:22,491 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:57:22,506 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 [2021-12-19 17:57:22,506 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:22,507 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:22,507 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:22,507 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:22,507 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:57:22,507 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:22,507 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:22,507 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:22,507 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration8_Loop [2021-12-19 17:57:22,507 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:22,507 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:22,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:22,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:22,545 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:22,546 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:57:22,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:22,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:22,547 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) [2021-12-19 17:57:22,563 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 [2021-12-19 17:57:22,564 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 [2021-12-19 17:57:22,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:57:22,570 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:57:22,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:57:22,570 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-19 17:57:22,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:57:22,571 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-19 17:57:22,571 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:57:22,582 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:57:22,598 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 [2021-12-19 17:57:22,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:22,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:22,599 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) [2021-12-19 17:57:22,600 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 [2021-12-19 17:57:22,602 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 [2021-12-19 17:57:22,607 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:57:22,608 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:57:22,608 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:57:22,608 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:57:22,608 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:57:22,609 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:57:22,609 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:57:22,635 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:57:22,640 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:57:22,640 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:57:22,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:22,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:22,641 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) [2021-12-19 17:57:22,655 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 [2021-12-19 17:57:22,655 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:57:22,656 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:57:22,656 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:57:22,656 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 [] [2021-12-19 17:57:22,692 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 [2021-12-19 17:57:22,693 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:57:22,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:22,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:57:22,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:22,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:57:22,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:22,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:22,802 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 [2021-12-19 17:57:22,802 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) [2021-12-19 17:57:22,897 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. [2021-12-19 17:57:22,898 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 [2021-12-19 17:57:22,898 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) [2021-12-19 17:57:22,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2021-12-19 17:57:22,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 99 transitions. Stem has 14 letters. Loop has 15 letters. [2021-12-19 17:57:22,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:22,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 99 transitions. Stem has 29 letters. Loop has 15 letters. [2021-12-19 17:57:22,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:22,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 99 transitions. Stem has 14 letters. Loop has 30 letters. [2021-12-19 17:57:22,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:22,899 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1562 states and 2071 transitions. [2021-12-19 17:57:22,905 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 190 [2021-12-19 17:57:22,933 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1562 states to 1337 states and 1769 transitions. [2021-12-19 17:57:22,933 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 280 [2021-12-19 17:57:22,933 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 291 [2021-12-19 17:57:22,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1337 states and 1769 transitions. [2021-12-19 17:57:22,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:22,934 INFO L681 BuchiCegarLoop]: Abstraction has 1337 states and 1769 transitions. [2021-12-19 17:57:22,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states and 1769 transitions. [2021-12-19 17:57:22,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1292. [2021-12-19 17:57:22,949 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) [2021-12-19 17:57:22,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1707 transitions. [2021-12-19 17:57:22,951 INFO L704 BuchiCegarLoop]: Abstraction has 1292 states and 1707 transitions. [2021-12-19 17:57:22,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:57:22,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:57:22,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:57:22,952 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) [2021-12-19 17:57:22,960 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 [2021-12-19 17:57:22,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:57:22,983 INFO L93 Difference]: Finished difference Result 1457 states and 1909 transitions. [2021-12-19 17:57:22,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:57:22,984 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1457 states and 1909 transitions. [2021-12-19 17:57:22,989 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 301 [2021-12-19 17:57:22,992 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1457 states to 1274 states and 1665 transitions. [2021-12-19 17:57:22,992 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 359 [2021-12-19 17:57:22,993 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 374 [2021-12-19 17:57:22,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1274 states and 1665 transitions. [2021-12-19 17:57:22,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:22,993 INFO L681 BuchiCegarLoop]: Abstraction has 1274 states and 1665 transitions. [2021-12-19 17:57:22,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states and 1665 transitions. [2021-12-19 17:57:22,999 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 [2021-12-19 17:57:23,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1262. [2021-12-19 17:57:23,005 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) [2021-12-19 17:57:23,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1653 transitions. [2021-12-19 17:57:23,007 INFO L704 BuchiCegarLoop]: Abstraction has 1262 states and 1653 transitions. [2021-12-19 17:57:23,007 INFO L587 BuchiCegarLoop]: Abstraction has 1262 states and 1653 transitions. [2021-12-19 17:57:23,007 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-19 17:57:23,007 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1262 states and 1653 transitions. [2021-12-19 17:57:23,010 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 301 [2021-12-19 17:57:23,010 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:57:23,010 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:57:23,011 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:57:23,011 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] [2021-12-19 17:57:23,012 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 [2021-12-19 17:57:23,012 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 [2021-12-19 17:57:23,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:23,012 INFO L85 PathProgramCache]: Analyzing trace with hash -923939026, now seen corresponding path program 3 times [2021-12-19 17:57:23,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:23,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719597874] [2021-12-19 17:57:23,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:23,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:23,017 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:23,031 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:23,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:23,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1607513209, now seen corresponding path program 1 times [2021-12-19 17:57:23,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:23,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30875303] [2021-12-19 17:57:23,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:23,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:23,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:57:23,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30875303] [2021-12-19 17:57:23,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30875303] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:57:23,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:57:23,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:57:23,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532687290] [2021-12-19 17:57:23,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:57:23,048 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 17:57:23,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:57:23,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:57:23,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:57:23,049 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) [2021-12-19 17:57:23,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:57:23,091 INFO L93 Difference]: Finished difference Result 1036 states and 1257 transitions. [2021-12-19 17:57:23,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:57:23,092 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1036 states and 1257 transitions. [2021-12-19 17:57:23,095 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 202 [2021-12-19 17:57:23,097 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1036 states to 654 states and 800 transitions. [2021-12-19 17:57:23,097 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 257 [2021-12-19 17:57:23,097 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 261 [2021-12-19 17:57:23,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 654 states and 800 transitions. [2021-12-19 17:57:23,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:23,098 INFO L681 BuchiCegarLoop]: Abstraction has 654 states and 800 transitions. [2021-12-19 17:57:23,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states and 800 transitions. [2021-12-19 17:57:23,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 651. [2021-12-19 17:57:23,103 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) [2021-12-19 17:57:23,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 795 transitions. [2021-12-19 17:57:23,104 INFO L704 BuchiCegarLoop]: Abstraction has 651 states and 795 transitions. [2021-12-19 17:57:23,104 INFO L587 BuchiCegarLoop]: Abstraction has 651 states and 795 transitions. [2021-12-19 17:57:23,105 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-19 17:57:23,105 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 651 states and 795 transitions. [2021-12-19 17:57:23,106 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 202 [2021-12-19 17:57:23,106 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:57:23,106 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:57:23,108 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:57:23,108 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] [2021-12-19 17:57:23,108 INFO L791 eck$LassoCheckResult]: Stem: 15621#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 15578#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~s__verify_mode~0#1, main_~s__session__peer~0#1, main_~s__s3__tmp__new_cipher__algorithms~0#1, main_~buf~0#1, main_~cb~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~s__verify_mode~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~s__session__peer~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~s__s3__tmp__new_cipher__algorithms~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~buf~0#1;havoc main_~cb~0#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 15579#L188 assume !false; 15874#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 15871#L41 assume 8466 == main_~s__state~0#1; 15869#L42 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 1; 15630#L90-1 main_~s__state~0#1 := 8496; 15600#L188 assume !false; 15601#L35 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 16161#L41 assume !(8466 == main_~s__state~0#1); 16159#L44 assume 8496 == main_~s__state~0#1; 16157#L45 assume 1 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 16156#L97-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 15614#L188 assume !false; 16039#L35 [2021-12-19 17:57:23,109 INFO L793 eck$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 [2021-12-19 17:57:23,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:23,109 INFO L85 PathProgramCache]: Analyzing trace with hash -923939026, now seen corresponding path program 4 times [2021-12-19 17:57:23,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:23,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560865696] [2021-12-19 17:57:23,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:23,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:23,115 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:23,120 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:23,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:23,121 INFO L85 PathProgramCache]: Analyzing trace with hash 530770115, now seen corresponding path program 1 times [2021-12-19 17:57:23,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:23,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175691655] [2021-12-19 17:57:23,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:23,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:23,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:23,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:57:23,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175691655] [2021-12-19 17:57:23,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175691655] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:57:23,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:57:23,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:57:23,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607502670] [2021-12-19 17:57:23,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:57:23,138 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 17:57:23,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:57:23,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:57:23,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:57:23,139 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) [2021-12-19 17:57:23,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:57:23,145 INFO L93 Difference]: Finished difference Result 634 states and 773 transitions. [2021-12-19 17:57:23,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:57:23,145 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 634 states and 773 transitions. [2021-12-19 17:57:23,148 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 170 [2021-12-19 17:57:23,149 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 634 states to 622 states and 758 transitions. [2021-12-19 17:57:23,149 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 247 [2021-12-19 17:57:23,150 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 247 [2021-12-19 17:57:23,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 622 states and 758 transitions. [2021-12-19 17:57:23,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:23,150 INFO L681 BuchiCegarLoop]: Abstraction has 622 states and 758 transitions. [2021-12-19 17:57:23,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states and 758 transitions. [2021-12-19 17:57:23,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 567. [2021-12-19 17:57:23,155 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) [2021-12-19 17:57:23,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 702 transitions. [2021-12-19 17:57:23,156 INFO L704 BuchiCegarLoop]: Abstraction has 567 states and 702 transitions. [2021-12-19 17:57:23,156 INFO L587 BuchiCegarLoop]: Abstraction has 567 states and 702 transitions. [2021-12-19 17:57:23,156 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-12-19 17:57:23,157 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 567 states and 702 transitions. [2021-12-19 17:57:23,158 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 146 [2021-12-19 17:57:23,158 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:57:23,158 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:57:23,160 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:57:23,160 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:57:23,161 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 [2021-12-19 17:57:23,161 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 [2021-12-19 17:57:23,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:23,162 INFO L85 PathProgramCache]: Analyzing trace with hash -923939026, now seen corresponding path program 5 times [2021-12-19 17:57:23,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:23,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315584519] [2021-12-19 17:57:23,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:23,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:23,168 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:23,173 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:23,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:23,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1282190981, now seen corresponding path program 1 times [2021-12-19 17:57:23,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:23,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569136809] [2021-12-19 17:57:23,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:23,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:23,178 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:23,181 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:23,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:23,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1587248888, now seen corresponding path program 1 times [2021-12-19 17:57:23,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:23,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409817841] [2021-12-19 17:57:23,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:23,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-19 17:57:23,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:57:23,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409817841] [2021-12-19 17:57:23,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409817841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:57:23,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:57:23,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:57:23,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450770182] [2021-12-19 17:57:23,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:57:23,229 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:23,229 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:23,229 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:23,229 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:23,229 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:57:23,229 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:23,229 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:23,229 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:23,229 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration11_Loop [2021-12-19 17:57:23,230 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:23,230 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:23,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:23,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:23,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:23,273 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:23,273 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:57:23,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:23,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:23,274 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) [2021-12-19 17:57:23,275 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 [2021-12-19 17:57:23,276 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:57:23,276 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:23,290 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:57:23,291 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0#1=4} Honda state: {ULTIMATE.start_main_~s__hit~0#1=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:57:23,308 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 [2021-12-19 17:57:23,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:23,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:23,309 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) [2021-12-19 17:57:23,310 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 [2021-12-19 17:57:23,311 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:57:23,311 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:23,322 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:57:23,322 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: [] [2021-12-19 17:57:23,339 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 [2021-12-19 17:57:23,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:23,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:23,341 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) [2021-12-19 17:57:23,343 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 [2021-12-19 17:57:23,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:57:23,347 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:23,373 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 [2021-12-19 17:57:23,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:23,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:23,374 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) [2021-12-19 17:57:23,376 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 [2021-12-19 17:57:23,377 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:57:23,377 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:23,384 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:57:23,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-12-19 17:57:23,400 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:23,400 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:23,400 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:23,401 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:23,401 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:57:23,401 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:23,401 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:23,401 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:23,401 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration11_Loop [2021-12-19 17:57:23,401 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:23,401 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:23,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:23,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:23,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:23,452 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:23,452 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:57:23,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:23,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:23,453 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) [2021-12-19 17:57:23,454 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 [2021-12-19 17:57:23,455 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 [2021-12-19 17:57:23,462 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:57:23,462 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:57:23,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:57:23,462 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-19 17:57:23,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:57:23,463 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-19 17:57:23,463 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:57:23,478 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:57:23,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-12-19 17:57:23,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:23,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:23,522 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) [2021-12-19 17:57:23,523 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 [2021-12-19 17:57:23,526 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 [2021-12-19 17:57:23,532 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:57:23,532 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:57:23,532 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:57:23,532 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-19 17:57:23,532 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:57:23,534 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-19 17:57:23,534 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:57:23,549 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:57:23,565 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 [2021-12-19 17:57:23,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:23,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:23,566 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) [2021-12-19 17:57:23,567 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 [2021-12-19 17:57:23,569 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 [2021-12-19 17:57:23,574 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:57:23,575 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:57:23,575 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:57:23,575 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:57:23,575 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:57:23,575 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:57:23,576 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:57:23,592 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:57:23,594 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:57:23,594 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:57:23,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:23,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:23,595 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) [2021-12-19 17:57:23,596 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 [2021-12-19 17:57:23,597 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:57:23,597 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:57:23,597 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:57:23,597 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 [] [2021-12-19 17:57:23,613 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 [2021-12-19 17:57:23,614 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:57:23,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:23,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:57:23,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:23,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:57:23,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:23,730 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 [2021-12-19 17:57:23,731 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) [2021-12-19 17:57:23,737 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. [2021-12-19 17:57:23,738 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 [2021-12-19 17:57:23,738 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) [2021-12-19 17:57:23,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-19 17:57:23,738 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 14 letters. Loop has 17 letters. [2021-12-19 17:57:23,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:23,738 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:57:23,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:23,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:57:23,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:23,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:57:23,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:23,872 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 [2021-12-19 17:57:23,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:23,882 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 [2021-12-19 17:57:23,882 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) [2021-12-19 17:57:23,889 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. [2021-12-19 17:57:23,890 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 [2021-12-19 17:57:23,891 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) [2021-12-19 17:57:23,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-19 17:57:23,891 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 14 letters. Loop has 17 letters. [2021-12-19 17:57:23,891 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:23,891 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:57:23,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:23,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:57:23,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:23,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:57:23,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:24,006 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 [2021-12-19 17:57:24,006 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) [2021-12-19 17:57:24,074 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. [2021-12-19 17:57:24,075 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 [2021-12-19 17:57:24,075 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) [2021-12-19 17:57:24,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2021-12-19 17:57:24,075 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 108 transitions. Stem has 14 letters. Loop has 17 letters. [2021-12-19 17:57:24,076 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:24,076 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 108 transitions. Stem has 31 letters. Loop has 17 letters. [2021-12-19 17:57:24,076 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:24,076 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 108 transitions. Stem has 14 letters. Loop has 34 letters. [2021-12-19 17:57:24,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:24,077 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1051 states and 1283 transitions. [2021-12-19 17:57:24,081 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 142 [2021-12-19 17:57:24,083 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1051 states to 686 states and 832 transitions. [2021-12-19 17:57:24,083 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 137 [2021-12-19 17:57:24,083 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 213 [2021-12-19 17:57:24,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 686 states and 832 transitions. [2021-12-19 17:57:24,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:24,083 INFO L681 BuchiCegarLoop]: Abstraction has 686 states and 832 transitions. [2021-12-19 17:57:24,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states and 832 transitions. [2021-12-19 17:57:24,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 594. [2021-12-19 17:57:24,088 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) [2021-12-19 17:57:24,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 740 transitions. [2021-12-19 17:57:24,090 INFO L704 BuchiCegarLoop]: Abstraction has 594 states and 740 transitions. [2021-12-19 17:57:24,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:57:24,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:57:24,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:57:24,090 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) [2021-12-19 17:57:24,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:57:24,122 INFO L93 Difference]: Finished difference Result 587 states and 730 transitions. [2021-12-19 17:57:24,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:57:24,123 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 587 states and 730 transitions. [2021-12-19 17:57:24,125 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 140 [2021-12-19 17:57:24,127 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 587 states to 565 states and 708 transitions. [2021-12-19 17:57:24,127 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 166 [2021-12-19 17:57:24,127 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 166 [2021-12-19 17:57:24,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 565 states and 708 transitions. [2021-12-19 17:57:24,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:24,127 INFO L681 BuchiCegarLoop]: Abstraction has 565 states and 708 transitions. [2021-12-19 17:57:24,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states and 708 transitions. [2021-12-19 17:57:24,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 564. [2021-12-19 17:57:24,132 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) [2021-12-19 17:57:24,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 707 transitions. [2021-12-19 17:57:24,133 INFO L704 BuchiCegarLoop]: Abstraction has 564 states and 707 transitions. [2021-12-19 17:57:24,133 INFO L587 BuchiCegarLoop]: Abstraction has 564 states and 707 transitions. [2021-12-19 17:57:24,133 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-12-19 17:57:24,133 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 564 states and 707 transitions. [2021-12-19 17:57:24,134 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 140 [2021-12-19 17:57:24,134 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:57:24,135 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:57:24,135 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:57:24,135 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:57:24,135 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 [2021-12-19 17:57:24,135 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 [2021-12-19 17:57:24,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:24,136 INFO L85 PathProgramCache]: Analyzing trace with hash 985223291, now seen corresponding path program 1 times [2021-12-19 17:57:24,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:24,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933964735] [2021-12-19 17:57:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:24,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-19 17:57:24,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:57:24,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933964735] [2021-12-19 17:57:24,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933964735] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:57:24,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:57:24,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:57:24,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855843920] [2021-12-19 17:57:24,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:57:24,147 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 17:57:24,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:24,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1708032834, now seen corresponding path program 1 times [2021-12-19 17:57:24,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:24,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208387907] [2021-12-19 17:57:24,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:24,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:24,149 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:24,151 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:24,164 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:24,164 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:24,165 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:24,165 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:24,165 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:57:24,165 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:24,165 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:24,165 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:24,165 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration12_Loop [2021-12-19 17:57:24,165 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:24,165 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:24,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:24,177 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:24,177 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:57:24,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:24,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:24,178 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) [2021-12-19 17:57:24,187 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:57:24,188 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:24,196 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 [2021-12-19 17:57:24,217 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 [2021-12-19 17:57:24,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:24,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:24,218 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) [2021-12-19 17:57:24,219 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 [2021-12-19 17:57:24,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:57:24,220 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:24,242 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:57:24,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-12-19 17:57:24,258 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:24,258 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:24,258 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:24,258 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:24,258 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:57:24,258 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:24,258 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:24,258 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:24,258 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration12_Loop [2021-12-19 17:57:24,258 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:24,258 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:24,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:24,273 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:24,274 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:57:24,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:24,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:24,276 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) [2021-12-19 17:57:24,277 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 [2021-12-19 17:57:24,282 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 [2021-12-19 17:57:24,288 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:57:24,288 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:57:24,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:57:24,288 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:57:24,288 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:57:24,289 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:57:24,289 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:57:24,304 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:57:24,306 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:57:24,306 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:57:24,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:24,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:24,307 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) [2021-12-19 17:57:24,308 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 [2021-12-19 17:57:24,310 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:57:24,310 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:57:24,310 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:57:24,310 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 [] [2021-12-19 17:57:24,325 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 [2021-12-19 17:57:24,325 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:57:24,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:24,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:57:24,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:24,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:57:24,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:24,438 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 [2021-12-19 17:57:24,439 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) [2021-12-19 17:57:24,580 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. [2021-12-19 17:57:24,581 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 [2021-12-19 17:57:24,581 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) [2021-12-19 17:57:24,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2021-12-19 17:57:24,581 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 157 transitions. Stem has 20 letters. Loop has 9 letters. [2021-12-19 17:57:24,582 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:24,582 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 157 transitions. Stem has 29 letters. Loop has 9 letters. [2021-12-19 17:57:24,582 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:24,582 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 157 transitions. Stem has 20 letters. Loop has 18 letters. [2021-12-19 17:57:24,582 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:24,582 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 975 states and 1257 transitions. [2021-12-19 17:57:24,586 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 180 [2021-12-19 17:57:24,588 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 975 states to 839 states and 1084 transitions. [2021-12-19 17:57:24,588 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 238 [2021-12-19 17:57:24,588 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 249 [2021-12-19 17:57:24,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 839 states and 1084 transitions. [2021-12-19 17:57:24,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:24,589 INFO L681 BuchiCegarLoop]: Abstraction has 839 states and 1084 transitions. [2021-12-19 17:57:24,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states and 1084 transitions. [2021-12-19 17:57:24,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 668. [2021-12-19 17:57:24,595 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) [2021-12-19 17:57:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 861 transitions. [2021-12-19 17:57:24,596 INFO L704 BuchiCegarLoop]: Abstraction has 668 states and 861 transitions. [2021-12-19 17:57:24,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:57:24,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:57:24,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:57:24,597 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) [2021-12-19 17:57:24,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:57:24,629 INFO L93 Difference]: Finished difference Result 718 states and 900 transitions. [2021-12-19 17:57:24,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:57:24,630 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 718 states and 900 transitions. [2021-12-19 17:57:24,632 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 171 [2021-12-19 17:57:24,634 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 718 states to 694 states and 871 transitions. [2021-12-19 17:57:24,634 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 206 [2021-12-19 17:57:24,634 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 212 [2021-12-19 17:57:24,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 694 states and 871 transitions. [2021-12-19 17:57:24,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:24,635 INFO L681 BuchiCegarLoop]: Abstraction has 694 states and 871 transitions. [2021-12-19 17:57:24,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states and 871 transitions. [2021-12-19 17:57:24,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 686. [2021-12-19 17:57:24,640 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) [2021-12-19 17:57:24,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 862 transitions. [2021-12-19 17:57:24,641 INFO L704 BuchiCegarLoop]: Abstraction has 686 states and 862 transitions. [2021-12-19 17:57:24,641 INFO L587 BuchiCegarLoop]: Abstraction has 686 states and 862 transitions. [2021-12-19 17:57:24,642 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-12-19 17:57:24,642 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 686 states and 862 transitions. [2021-12-19 17:57:24,643 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 170 [2021-12-19 17:57:24,643 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:57:24,644 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:57:24,644 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:57:24,644 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:57:24,644 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 [2021-12-19 17:57:24,644 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 [2021-12-19 17:57:24,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:24,645 INFO L85 PathProgramCache]: Analyzing trace with hash 368372739, now seen corresponding path program 1 times [2021-12-19 17:57:24,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:24,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238941153] [2021-12-19 17:57:24,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:24,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:24,656 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-19 17:57:24,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:57:24,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238941153] [2021-12-19 17:57:24,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238941153] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:57:24,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:57:24,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:57:24,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104295646] [2021-12-19 17:57:24,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:57:24,657 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 17:57:24,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:24,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1797154313, now seen corresponding path program 1 times [2021-12-19 17:57:24,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:24,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530467257] [2021-12-19 17:57:24,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:24,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:24,659 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:24,661 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:24,684 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:24,684 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:24,684 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:24,684 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:24,684 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:57:24,684 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:24,684 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:24,684 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:24,684 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration13_Loop [2021-12-19 17:57:24,685 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:24,685 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:24,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:24,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:24,723 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:24,723 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:57:24,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:24,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:24,724 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) [2021-12-19 17:57:24,725 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 [2021-12-19 17:57:24,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:57:24,726 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:24,762 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 [2021-12-19 17:57:24,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:24,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:24,763 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) [2021-12-19 17:57:24,764 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 [2021-12-19 17:57:24,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:57:24,766 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:24,787 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:57:24,803 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 [2021-12-19 17:57:24,803 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:24,803 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:24,803 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:24,803 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:24,804 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:57:24,804 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:24,804 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:24,804 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:24,804 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration13_Loop [2021-12-19 17:57:24,804 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:24,804 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:24,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:24,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:24,835 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:24,835 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:57:24,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:24,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:24,837 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) [2021-12-19 17:57:24,838 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 [2021-12-19 17:57:24,839 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 [2021-12-19 17:57:24,845 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:57:24,845 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:57:24,845 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:57:24,845 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:57:24,845 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:57:24,846 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:57:24,846 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:57:24,853 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:57:24,855 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:57:24,855 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:57:24,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:24,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:24,857 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) [2021-12-19 17:57:24,858 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 [2021-12-19 17:57:24,859 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:57:24,859 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:57:24,859 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:57:24,859 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 [] [2021-12-19 17:57:24,874 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 [2021-12-19 17:57:24,875 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:57:24,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:24,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:57:24,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:24,953 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 [2021-12-19 17:57:24,981 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 [2021-12-19 17:57:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:24,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:57:24,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:25,050 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 [2021-12-19 17:57:25,050 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) [2021-12-19 17:57:25,170 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. [2021-12-19 17:57:25,170 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 [2021-12-19 17:57:25,170 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) [2021-12-19 17:57:25,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2021-12-19 17:57:25,171 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 162 transitions. Stem has 27 letters. Loop has 11 letters. [2021-12-19 17:57:25,171 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:25,171 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 162 transitions. Stem has 38 letters. Loop has 11 letters. [2021-12-19 17:57:25,171 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:25,171 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 162 transitions. Stem has 27 letters. Loop has 22 letters. [2021-12-19 17:57:25,171 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:25,171 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1151 states and 1475 transitions. [2021-12-19 17:57:25,175 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 228 [2021-12-19 17:57:25,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1151 states to 1010 states and 1297 transitions. [2021-12-19 17:57:25,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 300 [2021-12-19 17:57:25,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 308 [2021-12-19 17:57:25,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1010 states and 1297 transitions. [2021-12-19 17:57:25,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:25,179 INFO L681 BuchiCegarLoop]: Abstraction has 1010 states and 1297 transitions. [2021-12-19 17:57:25,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states and 1297 transitions. [2021-12-19 17:57:25,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 829. [2021-12-19 17:57:25,186 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) [2021-12-19 17:57:25,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1068 transitions. [2021-12-19 17:57:25,188 INFO L704 BuchiCegarLoop]: Abstraction has 829 states and 1068 transitions. [2021-12-19 17:57:25,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:57:25,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:57:25,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:57:25,188 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) [2021-12-19 17:57:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:57:25,223 INFO L93 Difference]: Finished difference Result 886 states and 1109 transitions. [2021-12-19 17:57:25,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:57:25,224 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 886 states and 1109 transitions. [2021-12-19 17:57:25,226 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 212 [2021-12-19 17:57:25,228 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 886 states to 851 states and 1068 transitions. [2021-12-19 17:57:25,229 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 262 [2021-12-19 17:57:25,229 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 264 [2021-12-19 17:57:25,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 851 states and 1068 transitions. [2021-12-19 17:57:25,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:25,229 INFO L681 BuchiCegarLoop]: Abstraction has 851 states and 1068 transitions. [2021-12-19 17:57:25,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states and 1068 transitions. [2021-12-19 17:57:25,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 836. [2021-12-19 17:57:25,236 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) [2021-12-19 17:57:25,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1052 transitions. [2021-12-19 17:57:25,238 INFO L704 BuchiCegarLoop]: Abstraction has 836 states and 1052 transitions. [2021-12-19 17:57:25,238 INFO L587 BuchiCegarLoop]: Abstraction has 836 states and 1052 transitions. [2021-12-19 17:57:25,238 INFO L425 BuchiCegarLoop]: ======== Iteration 14============ [2021-12-19 17:57:25,238 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 836 states and 1052 transitions. [2021-12-19 17:57:25,239 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 211 [2021-12-19 17:57:25,239 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:57:25,239 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:57:25,240 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] [2021-12-19 17:57:25,240 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] [2021-12-19 17:57:25,240 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 [2021-12-19 17:57:25,240 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 [2021-12-19 17:57:25,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:25,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1975408204, now seen corresponding path program 1 times [2021-12-19 17:57:25,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:25,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950387919] [2021-12-19 17:57:25,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:25,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-19 17:57:25,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:57:25,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950387919] [2021-12-19 17:57:25,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950387919] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:57:25,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:57:25,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:57:25,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215707757] [2021-12-19 17:57:25,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:57:25,253 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 17:57:25,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:25,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2135132753, now seen corresponding path program 1 times [2021-12-19 17:57:25,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:25,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603899743] [2021-12-19 17:57:25,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:25,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:25,264 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-19 17:57:25,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:57:25,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603899743] [2021-12-19 17:57:25,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603899743] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:57:25,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:57:25,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:57:25,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345345805] [2021-12-19 17:57:25,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:57:25,265 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 17:57:25,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:57:25,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:57:25,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:57:25,266 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) [2021-12-19 17:57:25,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:57:25,298 INFO L93 Difference]: Finished difference Result 878 states and 1072 transitions. [2021-12-19 17:57:25,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:57:25,299 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 878 states and 1072 transitions. [2021-12-19 17:57:25,301 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 206 [2021-12-19 17:57:25,303 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 878 states to 831 states and 1019 transitions. [2021-12-19 17:57:25,303 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 258 [2021-12-19 17:57:25,303 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 260 [2021-12-19 17:57:25,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 831 states and 1019 transitions. [2021-12-19 17:57:25,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:25,303 INFO L681 BuchiCegarLoop]: Abstraction has 831 states and 1019 transitions. [2021-12-19 17:57:25,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states and 1019 transitions. [2021-12-19 17:57:25,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 808. [2021-12-19 17:57:25,310 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) [2021-12-19 17:57:25,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 995 transitions. [2021-12-19 17:57:25,311 INFO L704 BuchiCegarLoop]: Abstraction has 808 states and 995 transitions. [2021-12-19 17:57:25,311 INFO L587 BuchiCegarLoop]: Abstraction has 808 states and 995 transitions. [2021-12-19 17:57:25,311 INFO L425 BuchiCegarLoop]: ======== Iteration 15============ [2021-12-19 17:57:25,311 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 808 states and 995 transitions. [2021-12-19 17:57:25,312 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 205 [2021-12-19 17:57:25,312 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:57:25,313 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:57:25,313 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] [2021-12-19 17:57:25,313 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] [2021-12-19 17:57:25,313 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 [2021-12-19 17:57:25,313 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 [2021-12-19 17:57:25,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:25,314 INFO L85 PathProgramCache]: Analyzing trace with hash 242898568, now seen corresponding path program 1 times [2021-12-19 17:57:25,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:25,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590873860] [2021-12-19 17:57:25,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:25,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-19 17:57:25,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:57:25,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590873860] [2021-12-19 17:57:25,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590873860] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:57:25,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:57:25,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:57:25,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609966449] [2021-12-19 17:57:25,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:57:25,326 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 17:57:25,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:25,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1911359613, now seen corresponding path program 1 times [2021-12-19 17:57:25,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:25,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801465588] [2021-12-19 17:57:25,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:25,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-19 17:57:25,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:57:25,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801465588] [2021-12-19 17:57:25,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801465588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:57:25,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:57:25,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:57:25,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94254858] [2021-12-19 17:57:25,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:57:25,347 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 17:57:25,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:57:25,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:57:25,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:57:25,348 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) [2021-12-19 17:57:25,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:57:25,398 INFO L93 Difference]: Finished difference Result 889 states and 1061 transitions. [2021-12-19 17:57:25,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:57:25,399 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 889 states and 1061 transitions. [2021-12-19 17:57:25,401 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 182 [2021-12-19 17:57:25,403 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 889 states to 825 states and 988 transitions. [2021-12-19 17:57:25,403 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 243 [2021-12-19 17:57:25,403 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 244 [2021-12-19 17:57:25,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 825 states and 988 transitions. [2021-12-19 17:57:25,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:25,403 INFO L681 BuchiCegarLoop]: Abstraction has 825 states and 988 transitions. [2021-12-19 17:57:25,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states and 988 transitions. [2021-12-19 17:57:25,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 816. [2021-12-19 17:57:25,424 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) [2021-12-19 17:57:25,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 979 transitions. [2021-12-19 17:57:25,425 INFO L704 BuchiCegarLoop]: Abstraction has 816 states and 979 transitions. [2021-12-19 17:57:25,425 INFO L587 BuchiCegarLoop]: Abstraction has 816 states and 979 transitions. [2021-12-19 17:57:25,425 INFO L425 BuchiCegarLoop]: ======== Iteration 16============ [2021-12-19 17:57:25,425 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 816 states and 979 transitions. [2021-12-19 17:57:25,427 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 182 [2021-12-19 17:57:25,427 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:57:25,427 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:57:25,427 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] [2021-12-19 17:57:25,427 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] [2021-12-19 17:57:25,428 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 [2021-12-19 17:57:25,428 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 [2021-12-19 17:57:25,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:25,428 INFO L85 PathProgramCache]: Analyzing trace with hash -359758799, now seen corresponding path program 1 times [2021-12-19 17:57:25,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:25,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257016720] [2021-12-19 17:57:25,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:25,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:25,456 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-19 17:57:25,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:57:25,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257016720] [2021-12-19 17:57:25,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257016720] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:57:25,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:57:25,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:57:25,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825911171] [2021-12-19 17:57:25,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:57:25,457 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 17:57:25,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:25,458 INFO L85 PathProgramCache]: Analyzing trace with hash 944749696, now seen corresponding path program 1 times [2021-12-19 17:57:25,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:25,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445782982] [2021-12-19 17:57:25,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:25,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:25,460 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:25,462 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:25,521 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:25,521 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:25,521 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:25,521 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:25,521 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:57:25,522 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:25,522 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:25,522 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:25,522 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration16_Loop [2021-12-19 17:57:25,522 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:25,522 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:25,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:25,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:25,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:25,557 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:25,558 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:57:25,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:25,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:25,559 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) [2021-12-19 17:57:25,576 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:57:25,576 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:25,587 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 [2021-12-19 17:57:25,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-12-19 17:57:25,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:25,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:25,615 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) [2021-12-19 17:57:25,616 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 [2021-12-19 17:57:25,617 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:57:25,617 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:57:25,638 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:57:25,654 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 [2021-12-19 17:57:25,654 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:57:25,654 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:57:25,654 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:57:25,654 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:57:25,654 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:57:25,654 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:25,654 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:57:25,654 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:57:25,654 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1a.cil.c_Iteration16_Loop [2021-12-19 17:57:25,655 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:57:25,655 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:57:25,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:25,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:25,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:57:25,686 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:57:25,686 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:57:25,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:25,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:25,687 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) [2021-12-19 17:57:25,688 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 [2021-12-19 17:57:25,690 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 [2021-12-19 17:57:25,700 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:57:25,701 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:57:25,701 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:57:25,701 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:57:25,701 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:57:25,709 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:57:25,709 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:57:25,711 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:57:25,714 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:57:25,714 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:57:25,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:57:25,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:57:25,715 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) [2021-12-19 17:57:25,716 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 [2021-12-19 17:57:25,717 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:57:25,717 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:57:25,717 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:57:25,717 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 [] [2021-12-19 17:57:25,732 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 [2021-12-19 17:57:25,733 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:57:25,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:25,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:57:25,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:25,850 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 [2021-12-19 17:57:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:25,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:57:25,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:25,965 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 [2021-12-19 17:57:25,965 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) [2021-12-19 17:57:25,972 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. [2021-12-19 17:57:25,973 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 [2021-12-19 17:57:25,973 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) [2021-12-19 17:57:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-19 17:57:25,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 45 letters. Loop has 31 letters. [2021-12-19 17:57:25,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:25,974 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:57:25,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:25,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:57:25,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:26,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:57:26,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:26,173 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 [2021-12-19 17:57:26,173 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) [2021-12-19 17:57:26,179 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. [2021-12-19 17:57:26,179 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 [2021-12-19 17:57:26,179 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) [2021-12-19 17:57:26,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-19 17:57:26,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 45 letters. Loop has 31 letters. [2021-12-19 17:57:26,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:26,180 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:57:26,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:26,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:57:26,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:57:26,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:57:26,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:57:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:57:26,371 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 [2021-12-19 17:57:26,371 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) [2021-12-19 17:57:26,448 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. [2021-12-19 17:57:26,448 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 [2021-12-19 17:57:26,449 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) [2021-12-19 17:57:26,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2021-12-19 17:57:26,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 128 transitions. Stem has 45 letters. Loop has 31 letters. [2021-12-19 17:57:26,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:26,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 128 transitions. Stem has 76 letters. Loop has 31 letters. [2021-12-19 17:57:26,450 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:26,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 128 transitions. Stem has 45 letters. Loop has 62 letters. [2021-12-19 17:57:26,450 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:57:26,450 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1762 states and 2064 transitions. [2021-12-19 17:57:26,455 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 146 [2021-12-19 17:57:26,457 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1762 states to 1036 states and 1214 transitions. [2021-12-19 17:57:26,458 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 227 [2021-12-19 17:57:26,458 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 256 [2021-12-19 17:57:26,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1036 states and 1214 transitions. [2021-12-19 17:57:26,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:26,458 INFO L681 BuchiCegarLoop]: Abstraction has 1036 states and 1214 transitions. [2021-12-19 17:57:26,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states and 1214 transitions. [2021-12-19 17:57:26,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 864. [2021-12-19 17:57:26,466 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) [2021-12-19 17:57:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1039 transitions. [2021-12-19 17:57:26,467 INFO L704 BuchiCegarLoop]: Abstraction has 864 states and 1039 transitions. [2021-12-19 17:57:26,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:57:26,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:57:26,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:57:26,468 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) [2021-12-19 17:57:26,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:57:26,478 INFO L93 Difference]: Finished difference Result 861 states and 1025 transitions. [2021-12-19 17:57:26,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:57:26,479 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 861 states and 1025 transitions. [2021-12-19 17:57:26,481 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 146 [2021-12-19 17:57:26,483 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 861 states to 798 states and 957 transitions. [2021-12-19 17:57:26,483 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 230 [2021-12-19 17:57:26,483 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 230 [2021-12-19 17:57:26,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 798 states and 957 transitions. [2021-12-19 17:57:26,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:57:26,483 INFO L681 BuchiCegarLoop]: Abstraction has 798 states and 957 transitions. [2021-12-19 17:57:26,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states and 957 transitions. [2021-12-19 17:57:26,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 719. [2021-12-19 17:57:26,489 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) [2021-12-19 17:57:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 874 transitions. [2021-12-19 17:57:26,490 INFO L704 BuchiCegarLoop]: Abstraction has 719 states and 874 transitions. [2021-12-19 17:57:26,490 INFO L587 BuchiCegarLoop]: Abstraction has 719 states and 874 transitions. [2021-12-19 17:57:26,490 INFO L425 BuchiCegarLoop]: ======== Iteration 17============ [2021-12-19 17:57:26,490 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 719 states and 874 transitions. [2021-12-19 17:57:26,491 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 131 [2021-12-19 17:57:26,491 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:57:26,491 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:57:26,492 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] [2021-12-19 17:57:26,492 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] [2021-12-19 17:57:26,492 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 [2021-12-19 17:57:26,492 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 [2021-12-19 17:57:26,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:26,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1923687841, now seen corresponding path program 1 times [2021-12-19 17:57:26,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:26,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835232338] [2021-12-19 17:57:26,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:26,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:26,502 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:26,507 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:26,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:26,507 INFO L85 PathProgramCache]: Analyzing trace with hash -180445498, now seen corresponding path program 1 times [2021-12-19 17:57:26,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:26,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258406170] [2021-12-19 17:57:26,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:26,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:26,511 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:26,514 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:26,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:57:26,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1007086694, now seen corresponding path program 1 times [2021-12-19 17:57:26,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:57:26,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622527400] [2021-12-19 17:57:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:57:26,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:57:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:26,520 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:57:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:57:26,528 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:57:26,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 05:57:26 BoogieIcfgContainer [2021-12-19 17:57:26,883 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 17:57:26,883 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 17:57:26,884 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 17:57:26,884 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 17:57:26,884 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:57:17" (3/4) ... [2021-12-19 17:57:26,889 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-19 17:57:26,917 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-19 17:57:26,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 17:57:26,918 INFO L158 Benchmark]: Toolchain (without parser) took 9523.30ms. Allocated memory was 153.1MB in the beginning and 222.3MB in the end (delta: 69.2MB). Free memory was 121.1MB in the beginning and 69.2MB in the end (delta: 51.9MB). Peak memory consumption was 121.5MB. Max. memory is 16.1GB. [2021-12-19 17:57:26,918 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 79.7MB. Free memory was 37.4MB in the beginning and 37.3MB in the end (delta: 36.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:57:26,918 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.88ms. Allocated memory is still 153.1MB. Free memory was 120.8MB in the beginning and 129.1MB in the end (delta: -8.3MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2021-12-19 17:57:26,918 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.82ms. Allocated memory is still 153.1MB. Free memory was 129.1MB in the beginning and 127.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:57:26,919 INFO L158 Benchmark]: Boogie Preprocessor took 15.50ms. Allocated memory is still 153.1MB. Free memory was 127.6MB in the beginning and 126.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 17:57:26,919 INFO L158 Benchmark]: RCFGBuilder took 278.76ms. Allocated memory is still 153.1MB. Free memory was 126.1MB in the beginning and 113.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-19 17:57:26,919 INFO L158 Benchmark]: BuchiAutomizer took 8989.48ms. Allocated memory was 153.1MB in the beginning and 222.3MB in the end (delta: 69.2MB). Free memory was 113.3MB in the beginning and 72.4MB in the end (delta: 41.0MB). Peak memory consumption was 109.8MB. Max. memory is 16.1GB. [2021-12-19 17:57:26,919 INFO L158 Benchmark]: Witness Printer took 33.86ms. Allocated memory is still 222.3MB. Free memory was 72.4MB in the beginning and 69.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-19 17:57:26,920 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 79.7MB. Free memory was 37.4MB in the beginning and 37.3MB in the end (delta: 36.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.88ms. Allocated memory is still 153.1MB. Free memory was 120.8MB in the beginning and 129.1MB in the end (delta: -8.3MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.82ms. Allocated memory is still 153.1MB. Free memory was 129.1MB in the beginning and 127.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.50ms. Allocated memory is still 153.1MB. Free memory was 127.6MB in the beginning and 126.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 278.76ms. Allocated memory is still 153.1MB. Free memory was 126.1MB in the beginning and 113.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 8989.48ms. Allocated memory was 153.1MB in the beginning and 222.3MB in the end (delta: 69.2MB). Free memory was 113.3MB in the beginning and 72.4MB in the end (delta: 41.0MB). Peak memory consumption was 109.8MB. Max. memory is 16.1GB. * Witness Printer took 33.86ms. Allocated memory is still 222.3MB. Free memory was 72.4MB in the beginning and 69.2MB in the end (delta: 3.1MB). 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 -1 * s__state + 8552 and consists of 5 locations. One deterministic module has affine ranking function -2 * blastFlag + 5 and consists of 3 locations. One deterministic module has affine ranking function -1 * s__state + 8664 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 -1 * s__state + 8584 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 8.9s and 17 iterations. TraceHistogramMax:6. Analysis of lassos took 4.5s. Construction of modules took 1.0s. Büchi inclusion checks took 2.7s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 26. Automata minimization 0.2s 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, 1.1s 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: 36ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 12 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - 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@4271a430=0, s__verify_mode=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@32c073a0=0, buf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49c21810=2, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f3027d3=0, s__hit=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3da77a67=0, s__state=8576, tmp___1=2, NULL=1, \result=0, s__session__peer=0, NULL=0, s__s3__tmp__new_cipher__algorithms=-4294967552, 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! [2021-12-19 17:57:26,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with 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)