./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec 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/product-lines/email_spec27_product28.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 be6af7e006d8957fd46627762a570e475a69932e .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 15:48:37,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:48:37,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:48:37,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:48:37,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:48:37,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:48:37,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:48:37,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:48:37,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:48:37,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:48:37,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:48:37,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:48:37,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:48:37,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:48:37,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:48:37,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:48:37,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:48:37,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:48:37,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:48:37,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:48:37,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:48:37,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:48:37,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:48:37,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:48:37,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:48:37,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:48:37,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:48:37,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:48:37,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:48:37,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:48:37,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:48:37,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:48:37,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:48:37,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:48:37,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:48:37,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:48:37,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:48:37,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:48:37,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:48:37,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:48:37,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:48:37,681 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:48:37,703 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:48:37,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:48:37,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:48:37,705 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:48:37,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:48:37,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:48:37,706 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:48:37,706 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:48:37,706 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:48:37,706 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:48:37,707 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:48:37,707 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:48:37,707 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:48:37,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:48:37,708 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:48:37,708 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:48:37,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:48:37,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:48:37,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:48:37,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:48:37,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:48:37,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:48:37,709 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:48:37,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:48:37,709 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:48:37,709 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:48:37,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:48:37,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:48:37,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:48:37,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:48:37,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:48:37,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:48:37,711 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:48:37,711 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be6af7e006d8957fd46627762a570e475a69932e [2021-08-27 15:48:37,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:48:37,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:48:37,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:48:37,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:48:37,973 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:48:37,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2021-08-27 15:48:38,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dc5cbefb/3fdbd64774d246bc8c1688fbd2c0b074/FLAGc99b025d0 [2021-08-27 15:48:38,497 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:48:38,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2021-08-27 15:48:38,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dc5cbefb/3fdbd64774d246bc8c1688fbd2c0b074/FLAGc99b025d0 [2021-08-27 15:48:38,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dc5cbefb/3fdbd64774d246bc8c1688fbd2c0b074 [2021-08-27 15:48:38,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:48:38,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:48:38,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:48:38,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:48:38,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:48:38,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:48:38" (1/1) ... [2021-08-27 15:48:38,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51efa72a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:38, skipping insertion in model container [2021-08-27 15:48:38,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:48:38" (1/1) ... [2021-08-27 15:48:38,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:48:38,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:48:38,936 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c[32462,32475] [2021-08-27 15:48:38,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:48:39,003 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:48:39,082 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c[32462,32475] [2021-08-27 15:48:39,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:48:39,114 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:48:39,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:39 WrapperNode [2021-08-27 15:48:39,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:48:39,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:48:39,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:48:39,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:48:39,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:39" (1/1) ... [2021-08-27 15:48:39,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:39" (1/1) ... [2021-08-27 15:48:39,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:48:39,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:48:39,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:48:39,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:48:39,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:39" (1/1) ... [2021-08-27 15:48:39,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:39" (1/1) ... [2021-08-27 15:48:39,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:39" (1/1) ... [2021-08-27 15:48:39,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:39" (1/1) ... [2021-08-27 15:48:39,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:39" (1/1) ... [2021-08-27 15:48:39,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:39" (1/1) ... [2021-08-27 15:48:39,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:39" (1/1) ... [2021-08-27 15:48:39,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:48:39,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:48:39,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:48:39,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:48:39,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:39" (1/1) ... [2021-08-27 15:48:39,285 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:39,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:39,305 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) [2021-08-27 15:48:39,352 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 [2021-08-27 15:48:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-08-27 15:48:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:48:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:48:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:48:39,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:48:40,595 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:48:40,596 INFO L299 CfgBuilder]: Removed 295 assume(true) statements. [2021-08-27 15:48:40,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:48:40 BoogieIcfgContainer [2021-08-27 15:48:40,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:48:40,598 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:48:40,598 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:48:40,600 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:48:40,601 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:48:40,601 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:48:38" (1/3) ... [2021-08-27 15:48:40,602 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@742fe6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:48:40, skipping insertion in model container [2021-08-27 15:48:40,602 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:48:40,602 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:39" (2/3) ... [2021-08-27 15:48:40,602 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@742fe6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:48:40, skipping insertion in model container [2021-08-27 15:48:40,602 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:48:40,602 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:48:40" (3/3) ... [2021-08-27 15:48:40,603 INFO L389 chiAutomizerObserver]: Analyzing ICFG email_spec27_product28.cil.c [2021-08-27 15:48:40,632 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:48:40,632 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:48:40,632 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:48:40,633 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:48:40,633 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:48:40,633 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:48:40,633 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:48:40,633 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:48:40,654 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 493 states, 492 states have (on average 1.766260162601626) internal successors, (869), 492 states have internal predecessors, (869), 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) [2021-08-27 15:48:40,694 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 208 [2021-08-27 15:48:40,696 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:48:40,696 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:48:40,702 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:48:40,702 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:48:40,702 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:48:40,703 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 493 states, 492 states have (on average 1.766260162601626) internal successors, (869), 492 states have internal predecessors, (869), 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) [2021-08-27 15:48:40,714 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 208 [2021-08-27 15:48:40,714 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:48:40,714 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:48:40,719 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:48:40,719 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:48:40,727 INFO L791 eck$LassoCheckResult]: Stem: 484#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(29);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string7.base, #t~string7.offset := #Ultimate.allocOnStack(16);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(44);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(44);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(9);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(9);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(11);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(19);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string31.base, #t~string31.offset, 1);call write~init~int(100, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(10, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string34.base, #t~string34.offset, 1);call write~init~int(100, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(10, #t~string34.base, 2 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 3 + #t~string34.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(10);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(12);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(10);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(18);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(16);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(16);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string88.base, #t~string88.offset := #Ultimate.allocOnStack(30);call #t~string89.base, #t~string89.offset := #Ultimate.allocOnStack(9);call #t~string90.base, #t~string90.offset := #Ultimate.allocOnStack(21);call #t~string91.base, #t~string91.offset := #Ultimate.allocOnStack(30);call #t~string92.base, #t~string92.offset := #Ultimate.allocOnStack(9);call #t~string93.base, #t~string93.offset := #Ultimate.allocOnStack(21);call #t~string97.base, #t~string97.offset := #Ultimate.allocOnStack(30);call #t~string98.base, #t~string98.offset := #Ultimate.allocOnStack(9);call #t~string99.base, #t~string99.offset := #Ultimate.allocOnStack(25);call #t~string100.base, #t~string100.offset := #Ultimate.allocOnStack(30);call #t~string101.base, #t~string101.offset := #Ultimate.allocOnStack(9);call #t~string102.base, #t~string102.offset := #Ultimate.allocOnStack(25);call #t~string105.base, #t~string105.offset := #Ultimate.allocOnStack(10);call #t~string111.base, #t~string111.offset := #Ultimate.allocOnStack(16);call #t~string119.base, #t~string119.offset := #Ultimate.allocOnStack(20);call #t~string128.base, #t~string128.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string128.base, #t~string128.offset, 1);call write~init~int(115, #t~string128.base, 1 + #t~string128.offset, 1);call write~init~int(10, #t~string128.base, 2 + #t~string128.offset, 1);call write~init~int(0, #t~string128.base, 3 + #t~string128.offset, 1);~__SELECTED_FEATURE_Base~0 := 0;~__SELECTED_FEATURE_Keys~0 := 0;~__SELECTED_FEATURE_Encrypt~0 := 0;~__SELECTED_FEATURE_AutoResponder~0 := 0;~__SELECTED_FEATURE_AddressBook~0 := 0;~__SELECTED_FEATURE_Sign~0 := 0;~__SELECTED_FEATURE_Forward~0 := 0;~__SELECTED_FEATURE_Verify~0 := 0;~__SELECTED_FEATURE_Decrypt~0 := 0;~__GUIDSL_ROOT_PRODUCTION~0 := 0;~__GUIDSL_NON_TERMINAL_main~0 := 0;~bob~0 := 0;~rjh~0 := 0;~chuck~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~__ste_Email_counter~0 := 0;~__ste_email_id0~0 := 0;~__ste_email_id1~0 := 0;~__ste_email_from0~0 := 0;~__ste_email_from1~0 := 0;~__ste_email_to0~0 := 0;~__ste_email_to1~0 := 0;~__ste_email_subject0~0.base, ~__ste_email_subject0~0.offset := 0, 0;~__ste_email_subject1~0.base, ~__ste_email_subject1~0.offset := 0, 0;~__ste_email_body0~0.base, ~__ste_email_body0~0.offset := 0, 0;~__ste_email_body1~0.base, ~__ste_email_body1~0.offset := 0, 0;~__ste_email_isEncrypted0~0 := 0;~__ste_email_isEncrypted1~0 := 0;~__ste_email_encryptionKey0~0 := 0;~__ste_email_encryptionKey1~0 := 0;~__ste_email_isSigned0~0 := 0;~__ste_email_isSigned1~0 := 0;~__ste_email_signKey0~0 := 0;~__ste_email_signKey1~0 := 0;~__ste_email_isSignatureVerified0~0 := 0;~__ste_email_isSignatureVerified1~0 := 0;~queue_empty~0 := 1;~queued_message~0 := 0;~queued_client~0 := 0;~__ste_Client_counter~0 := 0;~__ste_client_name0~0.base, ~__ste_client_name0~0.offset := 0, 0;~__ste_client_name1~0.base, ~__ste_client_name1~0.offset := 0, 0;~__ste_client_name2~0.base, ~__ste_client_name2~0.offset := 0, 0;~__ste_client_outbuffer0~0 := 0;~__ste_client_outbuffer1~0 := 0;~__ste_client_outbuffer2~0 := 0;~__ste_client_outbuffer3~0 := 0;~__ste_ClientAddressBook_size0~0 := 0;~__ste_ClientAddressBook_size1~0 := 0;~__ste_ClientAddressBook_size2~0 := 0;~__ste_Client_AddressBook0_Alias0~0 := 0;~__ste_Client_AddressBook0_Alias1~0 := 0;~__ste_Client_AddressBook0_Alias2~0 := 0;~__ste_Client_AddressBook1_Alias0~0 := 0;~__ste_Client_AddressBook1_Alias1~0 := 0;~__ste_Client_AddressBook1_Alias2~0 := 0;~__ste_Client_AddressBook2_Alias0~0 := 0;~__ste_Client_AddressBook2_Alias1~0 := 0;~__ste_Client_AddressBook2_Alias2~0 := 0;~__ste_Client_AddressBook0_Address0~0 := 0;~__ste_Client_AddressBook0_Address1~0 := 0;~__ste_Client_AddressBook0_Address2~0 := 0;~__ste_Client_AddressBook1_Address0~0 := 0;~__ste_Client_AddressBook1_Address1~0 := 0;~__ste_Client_AddressBook1_Address2~0 := 0;~__ste_Client_AddressBook2_Address0~0 := 0;~__ste_Client_AddressBook2_Address1~0 := 0;~__ste_Client_AddressBook2_Address2~0 := 0;~__ste_client_autoResponse0~0 := 0;~__ste_client_autoResponse1~0 := 0;~__ste_client_autoResponse2~0 := 0;~__ste_client_privateKey0~0 := 0;~__ste_client_privateKey1~0 := 0;~__ste_client_privateKey2~0 := 0;~__ste_ClientKeyring_size0~0 := 0;~__ste_ClientKeyring_size1~0 := 0;~__ste_ClientKeyring_size2~0 := 0;~__ste_Client_Keyring0_User0~0 := 0;~__ste_Client_Keyring0_User1~0 := 0;~__ste_Client_Keyring0_User2~0 := 0;~__ste_Client_Keyring1_User0~0 := 0;~__ste_Client_Keyring1_User1~0 := 0;~__ste_Client_Keyring1_User2~0 := 0;~__ste_Client_Keyring2_User0~0 := 0;~__ste_Client_Keyring2_User1~0 := 0;~__ste_Client_Keyring2_User2~0 := 0;~__ste_Client_Keyring0_PublicKey0~0 := 0;~__ste_Client_Keyring0_PublicKey1~0 := 0;~__ste_Client_Keyring0_PublicKey2~0 := 0;~__ste_Client_Keyring1_PublicKey0~0 := 0;~__ste_Client_Keyring1_PublicKey1~0 := 0;~__ste_Client_Keyring1_PublicKey2~0 := 0;~__ste_Client_Keyring2_PublicKey0~0 := 0;~__ste_Client_Keyring2_PublicKey1~0 := 0;~__ste_Client_Keyring2_PublicKey2~0 := 0;~__ste_client_forwardReceiver0~0 := 0;~__ste_client_forwardReceiver1~0 := 0;~__ste_client_forwardReceiver2~0 := 0;~__ste_client_forwardReceiver3~0 := 0;~__ste_client_idCounter0~0 := 0;~__ste_client_idCounter1~0 := 0;~__ste_client_idCounter2~0 := 0; 416#L-1true havoc main_#res;havoc main_#t~nondet25, main_#t~ret26, main_~retValue_acc~0, main_~tmp~2;main_~retValue_acc~0 := main_#t~nondet25;havoc main_#t~nondet25;havoc main_~tmp~2; 467#L1663true havoc valid_product_#res;havoc valid_product_~retValue_acc~26;havoc valid_product_~retValue_acc~26;valid_product_~retValue_acc~26 := 1;valid_product_#res := valid_product_~retValue_acc~26; 344#L1671true main_#t~ret26 := valid_product_#res;main_~tmp~2 := main_#t~ret26;havoc main_#t~ret26; 294#L255true assume 0 != main_~tmp~2;havoc setup_#t~nondet20, setup_#t~nondet22, setup_#t~nondet24, setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset, setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset, setup_~__cil_tmp3~0.base, setup_~__cil_tmp3~0.offset;havoc setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset;havoc setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset;havoc setup_~__cil_tmp3~0.base, setup_~__cil_tmp3~0.offset;~bob~0 := 1;setup_bob_#in~bob___0 := ~bob~0;havoc setup_bob_~bob___0;setup_bob_~bob___0 := setup_bob_#in~bob___0;setup_bob__wrappee__Base_#in~bob___0 := setup_bob_~bob___0;havoc setup_bob__wrappee__Base_~bob___0;setup_bob__wrappee__Base_~bob___0 := setup_bob__wrappee__Base_#in~bob___0;setClientId_#in~handle, setClientId_#in~value := setup_bob__wrappee__Base_~bob___0, setup_bob__wrappee__Base_~bob___0;havoc setClientId_~handle, setClientId_~value;setClientId_~handle := setClientId_#in~handle;setClientId_~value := setClientId_#in~value; 399#L2728true assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 417#L2734-2true setClientPrivateKey_#in~handle, setClientPrivateKey_#in~value := setup_bob_~bob___0, 123;havoc setClientPrivateKey_~handle, setClientPrivateKey_~value;setClientPrivateKey_~handle := setClientPrivateKey_#in~handle;setClientPrivateKey_~value := setClientPrivateKey_#in~value; 95#L2293true assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 122#L2299-2true setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset := #t~string19.base, #t~string19.offset;havoc setup_#t~nondet20;~rjh~0 := 2;setup_rjh_#in~rjh___0 := ~rjh~0;havoc setup_rjh_~rjh___0;setup_rjh_~rjh___0 := setup_rjh_#in~rjh___0;setup_rjh__wrappee__Base_#in~rjh___0 := setup_rjh_~rjh___0;havoc setup_rjh__wrappee__Base_~rjh___0;setup_rjh__wrappee__Base_~rjh___0 := setup_rjh__wrappee__Base_#in~rjh___0;setClientId_#in~handle, setClientId_#in~value := setup_rjh__wrappee__Base_~rjh___0, setup_rjh__wrappee__Base_~rjh___0;havoc setClientId_~handle, setClientId_~value;setClientId_~handle := setClientId_#in~handle;setClientId_~value := setClientId_#in~value; 327#L2728-2true assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 100#L2734-5true setClientPrivateKey_#in~handle, setClientPrivateKey_#in~value := setup_rjh_~rjh___0, 456;havoc setClientPrivateKey_~handle, setClientPrivateKey_~value;setClientPrivateKey_~handle := setClientPrivateKey_#in~handle;setClientPrivateKey_~value := setClientPrivateKey_#in~value; 392#L2293-2true assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 242#L2299-5true setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset := #t~string21.base, #t~string21.offset;havoc setup_#t~nondet22;~chuck~0 := 3;setup_chuck_#in~chuck___0 := ~chuck~0;havoc setup_chuck_~chuck___0;setup_chuck_~chuck___0 := setup_chuck_#in~chuck___0;setup_chuck__wrappee__Base_#in~chuck___0 := setup_chuck_~chuck___0;havoc setup_chuck__wrappee__Base_~chuck___0;setup_chuck__wrappee__Base_~chuck___0 := setup_chuck__wrappee__Base_#in~chuck___0;setClientId_#in~handle, setClientId_#in~value := setup_chuck__wrappee__Base_~chuck___0, setup_chuck__wrappee__Base_~chuck___0;havoc setClientId_~handle, setClientId_~value;setClientId_~handle := setClientId_#in~handle;setClientId_~value := setClientId_#in~value; 74#L2728-4true assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 13#L2734-8true setClientPrivateKey_#in~handle, setClientPrivateKey_#in~value := setup_chuck_~chuck___0, 789;havoc setClientPrivateKey_~handle, setClientPrivateKey_~value;setClientPrivateKey_~handle := setClientPrivateKey_#in~handle;setClientPrivateKey_~value := setClientPrivateKey_#in~value; 445#L2293-4true assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 384#L2299-8true setup_~__cil_tmp3~0.base, setup_~__cil_tmp3~0.offset := #t~string23.base, #t~string23.offset;havoc setup_#t~nondet24; 277#L242true havoc test_#t~nondet133, test_#t~nondet134, test_#t~nondet135, test_#t~nondet136, test_#t~nondet137, test_#t~nondet138, test_#t~nondet139, test_#t~nondet140, test_#t~nondet141, test_#t~nondet142, test_#t~nondet143, test_~op1~0, test_~op2~0, test_~op3~0, test_~op4~0, test_~op5~0, test_~op6~0, test_~op7~0, test_~op8~0, test_~op9~0, test_~op10~0, test_~op11~0, test_~splverifierCounter~0, test_~tmp~22, test_~tmp___0~9, test_~tmp___1~5, test_~tmp___2~3, test_~tmp___3~1, test_~tmp___4~1, test_~tmp___5~0, test_~tmp___6~0, test_~tmp___7~0, test_~tmp___8~0, test_~tmp___9~0;havoc test_~op1~0;havoc test_~op2~0;havoc test_~op3~0;havoc test_~op4~0;havoc test_~op5~0;havoc test_~op6~0;havoc test_~op7~0;havoc test_~op8~0;havoc test_~op9~0;havoc test_~op10~0;havoc test_~op11~0;havoc test_~splverifierCounter~0;havoc test_~tmp~22;havoc test_~tmp___0~9;havoc test_~tmp___1~5;havoc test_~tmp___2~3;havoc test_~tmp___3~1;havoc test_~tmp___4~1;havoc test_~tmp___5~0;havoc test_~tmp___6~0;havoc test_~tmp___7~0;havoc test_~tmp___8~0;havoc test_~tmp___9~0;test_~op1~0 := 0;test_~op2~0 := 0;test_~op3~0 := 0;test_~op4~0 := 0;test_~op5~0 := 0;test_~op6~0 := 0;test_~op7~0 := 0;test_~op8~0 := 0;test_~op9~0 := 0;test_~op10~0 := 0;test_~op11~0 := 0;test_~splverifierCounter~0 := 0; 319#L2927-1true [2021-08-27 15:48:40,728 INFO L793 eck$LassoCheckResult]: Loop: 319#L2927-1true assume !false; 109#L2785true assume test_~splverifierCounter~0 < 4; 131#L2786true test_~splverifierCounter~0 := 1 + test_~splverifierCounter~0; 272#L2792true assume !(0 == test_~op1~0); 378#L2805true assume 0 == test_~op2~0;test_~tmp___8~0 := test_#t~nondet134;havoc test_#t~nondet134; 346#L2810true assume 0 != test_~tmp___8~0;test_~op2~0 := 1; 319#L2927-1true [2021-08-27 15:48:40,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:48:40,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1291925977, now seen corresponding path program 1 times [2021-08-27 15:48:40,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:48:40,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297950531] [2021-08-27 15:48:40,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:48:40,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:48:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:48:40,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:48:40,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:48:40,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297950531] [2021-08-27 15:48:40,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297950531] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:48:40,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:48:40,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:48:40,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128322315] [2021-08-27 15:48:40,989 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 15:48:40,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:48:40,990 INFO L82 PathProgramCache]: Analyzing trace with hash 590492675, now seen corresponding path program 1 times [2021-08-27 15:48:40,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:48:40,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095397577] [2021-08-27 15:48:40,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:48:40,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:48:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:48:41,001 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:48:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:48:41,030 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:48:41,082 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:48:41,083 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:48:41,083 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:48:41,084 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:48:41,084 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:48:41,084 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:41,084 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:48:41,084 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:48:41,084 INFO L133 ssoRankerPreferences]: Filename of dumped script: email_spec27_product28.cil.c_Iteration1_Loop [2021-08-27 15:48:41,084 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:48:41,084 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:48:41,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:41,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:41,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:41,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:41,163 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:48:41,163 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:48:41,165 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:41,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:41,176 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) [2021-08-27 15:48:41,181 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 [2021-08-27 15:48:41,182 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:48:41,182 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:48:41,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-27 15:48:41,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:41,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:41,213 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) [2021-08-27 15:48:41,213 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 [2021-08-27 15:48:41,214 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:48:41,215 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:48:41,224 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:48:41,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-27 15:48:41,241 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:48:41,241 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:48:41,241 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:48:41,241 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:48:41,241 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:48:41,241 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:41,242 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:48:41,242 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:48:41,242 INFO L133 ssoRankerPreferences]: Filename of dumped script: email_spec27_product28.cil.c_Iteration1_Loop [2021-08-27 15:48:41,242 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:48:41,242 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:48:41,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:41,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:41,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:41,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:41,325 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:48:41,328 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:48:41,329 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:41,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:41,330 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) [2021-08-27 15:48:41,347 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 [2021-08-27 15:48:41,353 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:48:41,353 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:48:41,354 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:48:41,354 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:48:41,354 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:48:41,355 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:48:41,355 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:48:41,357 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:48:41,362 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 [2021-08-27 15:48:41,362 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 15:48:41,362 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 15:48:41,363 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:41,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:41,405 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) [2021-08-27 15:48:41,420 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 [2021-08-27 15:48:41,421 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:48:41,421 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:48:41,421 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:48:41,421 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_test_~op2~0) = -2*ULTIMATE.start_test_~op2~0 + 1 Supporting invariants [] [2021-08-27 15:48:41,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-08-27 15:48:41,439 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:48:41,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:48:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:48:41,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:48:41,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:48:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:48:41,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:48:41,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:48:41,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:48:41,763 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 [2021-08-27 15:48:41,765 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 493 states, 492 states have (on average 1.766260162601626) internal successors, (869), 492 states have internal predecessors, (869), 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 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) [2021-08-27 15:48:41,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-08-27 15:48:41,920 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 493 states, 492 states have (on average 1.766260162601626) internal successors, (869), 492 states have internal predecessors, (869), 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 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 2142 states and 3764 transitions. Complement of second has 7 states. [2021-08-27 15:48:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-27 15:48:41,922 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) [2021-08-27 15:48:41,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2128 transitions. [2021-08-27 15:48:41,925 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 2128 transitions. Stem has 18 letters. Loop has 6 letters. [2021-08-27 15:48:41,926 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:48:41,926 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 2128 transitions. Stem has 24 letters. Loop has 6 letters. [2021-08-27 15:48:41,926 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:48:41,926 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 2128 transitions. Stem has 18 letters. Loop has 12 letters. [2021-08-27 15:48:41,927 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:48:41,927 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2142 states and 3764 transitions. [2021-08-27 15:48:41,940 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 415 [2021-08-27 15:48:41,947 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2142 states to 863 states and 1568 transitions. [2021-08-27 15:48:41,947 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 446 [2021-08-27 15:48:41,948 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 447 [2021-08-27 15:48:41,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 863 states and 1568 transitions. [2021-08-27 15:48:41,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:48:41,949 INFO L681 BuchiCegarLoop]: Abstraction has 863 states and 1568 transitions. [2021-08-27 15:48:41,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states and 1568 transitions. [2021-08-27 15:48:41,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 448. [2021-08-27 15:48:41,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 448 states have (on average 1.8102678571428572) internal successors, (811), 447 states have internal predecessors, (811), 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) [2021-08-27 15:48:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 811 transitions. [2021-08-27 15:48:41,979 INFO L704 BuchiCegarLoop]: Abstraction has 448 states and 811 transitions. [2021-08-27 15:48:41,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:48:41,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:48:41,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:48:41,982 INFO L87 Difference]: Start difference. First operand 448 states and 811 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) [2021-08-27 15:48:42,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:48:42,014 INFO L93 Difference]: Finished difference Result 876 states and 1587 transitions. [2021-08-27 15:48:42,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:48:42,015 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 876 states and 1587 transitions. [2021-08-27 15:48:42,019 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 416 [2021-08-27 15:48:42,023 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 876 states to 876 states and 1587 transitions. [2021-08-27 15:48:42,023 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 458 [2021-08-27 15:48:42,023 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 458 [2021-08-27 15:48:42,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 876 states and 1587 transitions. [2021-08-27 15:48:42,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:48:42,024 INFO L681 BuchiCegarLoop]: Abstraction has 876 states and 1587 transitions. [2021-08-27 15:48:42,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states and 1587 transitions. [2021-08-27 15:48:42,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 447. [2021-08-27 15:48:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 447 states have (on average 1.8053691275167785) internal successors, (807), 446 states have internal predecessors, (807), 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) [2021-08-27 15:48:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 807 transitions. [2021-08-27 15:48:42,033 INFO L704 BuchiCegarLoop]: Abstraction has 447 states and 807 transitions. [2021-08-27 15:48:42,033 INFO L587 BuchiCegarLoop]: Abstraction has 447 states and 807 transitions. [2021-08-27 15:48:42,033 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:48:42,033 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 447 states and 807 transitions. [2021-08-27 15:48:42,034 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 208 [2021-08-27 15:48:42,034 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:48:42,035 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:48:42,035 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:48:42,035 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:48:42,036 INFO L791 eck$LassoCheckResult]: Stem: 4503#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(29);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string7.base, #t~string7.offset := #Ultimate.allocOnStack(16);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(44);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(44);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(9);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(9);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(11);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(19);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string31.base, #t~string31.offset, 1);call write~init~int(100, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(10, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string34.base, #t~string34.offset, 1);call write~init~int(100, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(10, #t~string34.base, 2 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 3 + #t~string34.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(10);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(12);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(10);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(18);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(16);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(16);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string88.base, #t~string88.offset := #Ultimate.allocOnStack(30);call #t~string89.base, #t~string89.offset := #Ultimate.allocOnStack(9);call #t~string90.base, #t~string90.offset := #Ultimate.allocOnStack(21);call #t~string91.base, #t~string91.offset := #Ultimate.allocOnStack(30);call #t~string92.base, #t~string92.offset := #Ultimate.allocOnStack(9);call #t~string93.base, #t~string93.offset := #Ultimate.allocOnStack(21);call #t~string97.base, #t~string97.offset := #Ultimate.allocOnStack(30);call #t~string98.base, #t~string98.offset := #Ultimate.allocOnStack(9);call #t~string99.base, #t~string99.offset := #Ultimate.allocOnStack(25);call #t~string100.base, #t~string100.offset := #Ultimate.allocOnStack(30);call #t~string101.base, #t~string101.offset := #Ultimate.allocOnStack(9);call #t~string102.base, #t~string102.offset := #Ultimate.allocOnStack(25);call #t~string105.base, #t~string105.offset := #Ultimate.allocOnStack(10);call #t~string111.base, #t~string111.offset := #Ultimate.allocOnStack(16);call #t~string119.base, #t~string119.offset := #Ultimate.allocOnStack(20);call #t~string128.base, #t~string128.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string128.base, #t~string128.offset, 1);call write~init~int(115, #t~string128.base, 1 + #t~string128.offset, 1);call write~init~int(10, #t~string128.base, 2 + #t~string128.offset, 1);call write~init~int(0, #t~string128.base, 3 + #t~string128.offset, 1);~__SELECTED_FEATURE_Base~0 := 0;~__SELECTED_FEATURE_Keys~0 := 0;~__SELECTED_FEATURE_Encrypt~0 := 0;~__SELECTED_FEATURE_AutoResponder~0 := 0;~__SELECTED_FEATURE_AddressBook~0 := 0;~__SELECTED_FEATURE_Sign~0 := 0;~__SELECTED_FEATURE_Forward~0 := 0;~__SELECTED_FEATURE_Verify~0 := 0;~__SELECTED_FEATURE_Decrypt~0 := 0;~__GUIDSL_ROOT_PRODUCTION~0 := 0;~__GUIDSL_NON_TERMINAL_main~0 := 0;~bob~0 := 0;~rjh~0 := 0;~chuck~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~__ste_Email_counter~0 := 0;~__ste_email_id0~0 := 0;~__ste_email_id1~0 := 0;~__ste_email_from0~0 := 0;~__ste_email_from1~0 := 0;~__ste_email_to0~0 := 0;~__ste_email_to1~0 := 0;~__ste_email_subject0~0.base, ~__ste_email_subject0~0.offset := 0, 0;~__ste_email_subject1~0.base, ~__ste_email_subject1~0.offset := 0, 0;~__ste_email_body0~0.base, ~__ste_email_body0~0.offset := 0, 0;~__ste_email_body1~0.base, ~__ste_email_body1~0.offset := 0, 0;~__ste_email_isEncrypted0~0 := 0;~__ste_email_isEncrypted1~0 := 0;~__ste_email_encryptionKey0~0 := 0;~__ste_email_encryptionKey1~0 := 0;~__ste_email_isSigned0~0 := 0;~__ste_email_isSigned1~0 := 0;~__ste_email_signKey0~0 := 0;~__ste_email_signKey1~0 := 0;~__ste_email_isSignatureVerified0~0 := 0;~__ste_email_isSignatureVerified1~0 := 0;~queue_empty~0 := 1;~queued_message~0 := 0;~queued_client~0 := 0;~__ste_Client_counter~0 := 0;~__ste_client_name0~0.base, ~__ste_client_name0~0.offset := 0, 0;~__ste_client_name1~0.base, ~__ste_client_name1~0.offset := 0, 0;~__ste_client_name2~0.base, ~__ste_client_name2~0.offset := 0, 0;~__ste_client_outbuffer0~0 := 0;~__ste_client_outbuffer1~0 := 0;~__ste_client_outbuffer2~0 := 0;~__ste_client_outbuffer3~0 := 0;~__ste_ClientAddressBook_size0~0 := 0;~__ste_ClientAddressBook_size1~0 := 0;~__ste_ClientAddressBook_size2~0 := 0;~__ste_Client_AddressBook0_Alias0~0 := 0;~__ste_Client_AddressBook0_Alias1~0 := 0;~__ste_Client_AddressBook0_Alias2~0 := 0;~__ste_Client_AddressBook1_Alias0~0 := 0;~__ste_Client_AddressBook1_Alias1~0 := 0;~__ste_Client_AddressBook1_Alias2~0 := 0;~__ste_Client_AddressBook2_Alias0~0 := 0;~__ste_Client_AddressBook2_Alias1~0 := 0;~__ste_Client_AddressBook2_Alias2~0 := 0;~__ste_Client_AddressBook0_Address0~0 := 0;~__ste_Client_AddressBook0_Address1~0 := 0;~__ste_Client_AddressBook0_Address2~0 := 0;~__ste_Client_AddressBook1_Address0~0 := 0;~__ste_Client_AddressBook1_Address1~0 := 0;~__ste_Client_AddressBook1_Address2~0 := 0;~__ste_Client_AddressBook2_Address0~0 := 0;~__ste_Client_AddressBook2_Address1~0 := 0;~__ste_Client_AddressBook2_Address2~0 := 0;~__ste_client_autoResponse0~0 := 0;~__ste_client_autoResponse1~0 := 0;~__ste_client_autoResponse2~0 := 0;~__ste_client_privateKey0~0 := 0;~__ste_client_privateKey1~0 := 0;~__ste_client_privateKey2~0 := 0;~__ste_ClientKeyring_size0~0 := 0;~__ste_ClientKeyring_size1~0 := 0;~__ste_ClientKeyring_size2~0 := 0;~__ste_Client_Keyring0_User0~0 := 0;~__ste_Client_Keyring0_User1~0 := 0;~__ste_Client_Keyring0_User2~0 := 0;~__ste_Client_Keyring1_User0~0 := 0;~__ste_Client_Keyring1_User1~0 := 0;~__ste_Client_Keyring1_User2~0 := 0;~__ste_Client_Keyring2_User0~0 := 0;~__ste_Client_Keyring2_User1~0 := 0;~__ste_Client_Keyring2_User2~0 := 0;~__ste_Client_Keyring0_PublicKey0~0 := 0;~__ste_Client_Keyring0_PublicKey1~0 := 0;~__ste_Client_Keyring0_PublicKey2~0 := 0;~__ste_Client_Keyring1_PublicKey0~0 := 0;~__ste_Client_Keyring1_PublicKey1~0 := 0;~__ste_Client_Keyring1_PublicKey2~0 := 0;~__ste_Client_Keyring2_PublicKey0~0 := 0;~__ste_Client_Keyring2_PublicKey1~0 := 0;~__ste_Client_Keyring2_PublicKey2~0 := 0;~__ste_client_forwardReceiver0~0 := 0;~__ste_client_forwardReceiver1~0 := 0;~__ste_client_forwardReceiver2~0 := 0;~__ste_client_forwardReceiver3~0 := 0;~__ste_client_idCounter0~0 := 0;~__ste_client_idCounter1~0 := 0;~__ste_client_idCounter2~0 := 0; 4453#L-1 havoc main_#res;havoc main_#t~nondet25, main_#t~ret26, main_~retValue_acc~0, main_~tmp~2;main_~retValue_acc~0 := main_#t~nondet25;havoc main_#t~nondet25;havoc main_~tmp~2; 4454#L1663 havoc valid_product_#res;havoc valid_product_~retValue_acc~26;havoc valid_product_~retValue_acc~26;valid_product_~retValue_acc~26 := 1;valid_product_#res := valid_product_~retValue_acc~26; 4307#L1671 main_#t~ret26 := valid_product_#res;main_~tmp~2 := main_#t~ret26;havoc main_#t~ret26; 4130#L255 assume 0 != main_~tmp~2;havoc setup_#t~nondet20, setup_#t~nondet22, setup_#t~nondet24, setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset, setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset, setup_~__cil_tmp3~0.base, setup_~__cil_tmp3~0.offset;havoc setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset;havoc setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset;havoc setup_~__cil_tmp3~0.base, setup_~__cil_tmp3~0.offset;~bob~0 := 1;setup_bob_#in~bob___0 := ~bob~0;havoc setup_bob_~bob___0;setup_bob_~bob___0 := setup_bob_#in~bob___0;setup_bob__wrappee__Base_#in~bob___0 := setup_bob_~bob___0;havoc setup_bob__wrappee__Base_~bob___0;setup_bob__wrappee__Base_~bob___0 := setup_bob__wrappee__Base_#in~bob___0;setClientId_#in~handle, setClientId_#in~value := setup_bob__wrappee__Base_~bob___0, setup_bob__wrappee__Base_~bob___0;havoc setClientId_~handle, setClientId_~value;setClientId_~handle := setClientId_#in~handle;setClientId_~value := setClientId_#in~value; 4131#L2728 assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 4339#L2734-2 setClientPrivateKey_#in~handle, setClientPrivateKey_#in~value := setup_bob_~bob___0, 123;havoc setClientPrivateKey_~handle, setClientPrivateKey_~value;setClientPrivateKey_~handle := setClientPrivateKey_#in~handle;setClientPrivateKey_~value := setClientPrivateKey_#in~value; 4313#L2293 assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 4314#L2299-2 setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset := #t~string19.base, #t~string19.offset;havoc setup_#t~nondet20;~rjh~0 := 2;setup_rjh_#in~rjh___0 := ~rjh~0;havoc setup_rjh_~rjh___0;setup_rjh_~rjh___0 := setup_rjh_#in~rjh___0;setup_rjh__wrappee__Base_#in~rjh___0 := setup_rjh_~rjh___0;havoc setup_rjh__wrappee__Base_~rjh___0;setup_rjh__wrappee__Base_~rjh___0 := setup_rjh__wrappee__Base_#in~rjh___0;setClientId_#in~handle, setClientId_#in~value := setup_rjh__wrappee__Base_~rjh___0, setup_rjh__wrappee__Base_~rjh___0;havoc setClientId_~handle, setClientId_~value;setClientId_~handle := setClientId_#in~handle;setClientId_~value := setClientId_#in~value; 4275#L2728-2 assume !(1 == setClientId_~handle); 4276#L2731-2 assume 2 == setClientId_~handle;~__ste_client_idCounter1~0 := setClientId_~value; 4326#L2734-5 setClientPrivateKey_#in~handle, setClientPrivateKey_#in~value := setup_rjh_~rjh___0, 456;havoc setClientPrivateKey_~handle, setClientPrivateKey_~value;setClientPrivateKey_~handle := setClientPrivateKey_#in~handle;setClientPrivateKey_~value := setClientPrivateKey_#in~value; 4327#L2293-2 assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 4200#L2299-5 setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset := #t~string21.base, #t~string21.offset;havoc setup_#t~nondet22;~chuck~0 := 3;setup_chuck_#in~chuck___0 := ~chuck~0;havoc setup_chuck_~chuck___0;setup_chuck_~chuck___0 := setup_chuck_#in~chuck___0;setup_chuck__wrappee__Base_#in~chuck___0 := setup_chuck_~chuck___0;havoc setup_chuck__wrappee__Base_~chuck___0;setup_chuck__wrappee__Base_~chuck___0 := setup_chuck__wrappee__Base_#in~chuck___0;setClientId_#in~handle, setClientId_#in~value := setup_chuck__wrappee__Base_~chuck___0, setup_chuck__wrappee__Base_~chuck___0;havoc setClientId_~handle, setClientId_~value;setClientId_~handle := setClientId_#in~handle;setClientId_~value := setClientId_#in~value; 4267#L2728-4 assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 4102#L2734-8 setClientPrivateKey_#in~handle, setClientPrivateKey_#in~value := setup_chuck_~chuck___0, 789;havoc setClientPrivateKey_~handle, setClientPrivateKey_~value;setClientPrivateKey_~handle := setClientPrivateKey_#in~handle;setClientPrivateKey_~value := setClientPrivateKey_#in~value; 4103#L2293-4 assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 4161#L2299-8 setup_~__cil_tmp3~0.base, setup_~__cil_tmp3~0.offset := #t~string23.base, #t~string23.offset;havoc setup_#t~nondet24; 4401#L242 havoc test_#t~nondet133, test_#t~nondet134, test_#t~nondet135, test_#t~nondet136, test_#t~nondet137, test_#t~nondet138, test_#t~nondet139, test_#t~nondet140, test_#t~nondet141, test_#t~nondet142, test_#t~nondet143, test_~op1~0, test_~op2~0, test_~op3~0, test_~op4~0, test_~op5~0, test_~op6~0, test_~op7~0, test_~op8~0, test_~op9~0, test_~op10~0, test_~op11~0, test_~splverifierCounter~0, test_~tmp~22, test_~tmp___0~9, test_~tmp___1~5, test_~tmp___2~3, test_~tmp___3~1, test_~tmp___4~1, test_~tmp___5~0, test_~tmp___6~0, test_~tmp___7~0, test_~tmp___8~0, test_~tmp___9~0;havoc test_~op1~0;havoc test_~op2~0;havoc test_~op3~0;havoc test_~op4~0;havoc test_~op5~0;havoc test_~op6~0;havoc test_~op7~0;havoc test_~op8~0;havoc test_~op9~0;havoc test_~op10~0;havoc test_~op11~0;havoc test_~splverifierCounter~0;havoc test_~tmp~22;havoc test_~tmp___0~9;havoc test_~tmp___1~5;havoc test_~tmp___2~3;havoc test_~tmp___3~1;havoc test_~tmp___4~1;havoc test_~tmp___5~0;havoc test_~tmp___6~0;havoc test_~tmp___7~0;havoc test_~tmp___8~0;havoc test_~tmp___9~0;test_~op1~0 := 0;test_~op2~0 := 0;test_~op3~0 := 0;test_~op4~0 := 0;test_~op5~0 := 0;test_~op6~0 := 0;test_~op7~0 := 0;test_~op8~0 := 0;test_~op9~0 := 0;test_~op10~0 := 0;test_~op11~0 := 0;test_~splverifierCounter~0 := 0; 4504#L2927-1 assume !false; 4251#L2785 [2021-08-27 15:48:42,036 INFO L793 eck$LassoCheckResult]: Loop: 4251#L2785 assume test_~splverifierCounter~0 < 4; 4334#L2786 test_~splverifierCounter~0 := 1 + test_~splverifierCounter~0; 4394#L2792 assume !(0 == test_~op1~0); 4358#L2805 assume !(0 == test_~op2~0); 4305#L2816 assume 0 == test_~op3~0;test_~tmp___7~0 := test_#t~nondet135;havoc test_#t~nondet135; 4144#L2821 assume 0 != test_~tmp___7~0;setClientPrivateKey_#in~handle, setClientPrivateKey_#in~value := ~rjh~0, 0;havoc setClientPrivateKey_~handle, setClientPrivateKey_~value;setClientPrivateKey_~handle := setClientPrivateKey_#in~handle;setClientPrivateKey_~value := setClientPrivateKey_#in~value; 4146#L2293-6 assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 4402#L2299-11 test_~op3~0 := 1; 4221#L2927-1 assume !false; 4251#L2785 [2021-08-27 15:48:42,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:48:42,036 INFO L82 PathProgramCache]: Analyzing trace with hash -953559564, now seen corresponding path program 1 times [2021-08-27 15:48:42,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:48:42,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368977109] [2021-08-27 15:48:42,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:48:42,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:48:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:48:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:48:42,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:48:42,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368977109] [2021-08-27 15:48:42,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368977109] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:48:42,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:48:42,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 15:48:42,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703637712] [2021-08-27 15:48:42,082 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 15:48:42,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:48:42,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1296812605, now seen corresponding path program 1 times [2021-08-27 15:48:42,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:48:42,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845234535] [2021-08-27 15:48:42,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:48:42,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:48:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:48:42,088 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:48:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:48:42,093 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:48:42,185 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:48:42,186 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:48:42,186 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:48:42,186 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:48:42,186 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:48:42,186 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:42,186 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:48:42,186 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:48:42,186 INFO L133 ssoRankerPreferences]: Filename of dumped script: email_spec27_product28.cil.c_Iteration2_Loop [2021-08-27 15:48:42,186 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:48:42,187 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:48:42,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:42,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:42,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:42,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:42,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:42,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:42,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:42,290 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:48:42,290 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:48:42,291 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:42,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:42,291 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) [2021-08-27 15:48:42,344 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:48:42,344 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:48:42,350 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 [2021-08-27 15:48:42,366 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:48:42,366 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_test_#t~nondet135=5, ULTIMATE.start_test_~tmp___7~0=5} Honda state: {ULTIMATE.start_test_#t~nondet135=5, ULTIMATE.start_test_~tmp___7~0=5} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 15:48:42,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-08-27 15:48:42,401 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:42,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:42,403 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) [2021-08-27 15:48:42,446 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 [2021-08-27 15:48:42,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:48:42,447 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:48:42,485 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 [2021-08-27 15:48:42,485 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:42,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:42,486 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) [2021-08-27 15:48:42,488 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 [2021-08-27 15:48:42,489 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:48:42,489 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:48:42,526 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:48:42,551 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 [2021-08-27 15:48:42,551 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:48:42,551 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:48:42,551 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:48:42,551 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:48:42,551 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:48:42,551 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:42,551 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:48:42,551 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:48:42,551 INFO L133 ssoRankerPreferences]: Filename of dumped script: email_spec27_product28.cil.c_Iteration2_Loop [2021-08-27 15:48:42,551 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:48:42,552 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:48:42,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:42,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:42,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:42,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:42,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:42,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:42,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:42,679 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:48:42,679 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:48:42,679 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:42,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:42,680 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) [2021-08-27 15:48:42,681 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 [2021-08-27 15:48:42,682 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 [2021-08-27 15:48:42,688 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:48:42,688 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:48:42,688 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:48:42,688 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-27 15:48:42,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:48:42,690 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-08-27 15:48:42,690 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:48:42,705 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:48:42,722 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 [2021-08-27 15:48:42,722 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:42,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:42,723 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) [2021-08-27 15:48:42,724 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 [2021-08-27 15:48:42,725 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 [2021-08-27 15:48:42,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:48:42,731 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:48:42,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:48:42,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:48:42,731 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:48:42,733 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:48:42,733 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:48:42,748 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:48:42,750 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 15:48:42,750 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 15:48:42,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:42,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:42,751 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) [2021-08-27 15:48:42,757 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:48:42,757 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:48:42,757 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:48:42,757 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_test_~splverifierCounter~0) = -2*ULTIMATE.start_test_~splverifierCounter~0 + 7 Supporting invariants [] [2021-08-27 15:48:42,757 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 [2021-08-27 15:48:42,774 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 [2021-08-27 15:48:42,774 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:48:42,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:48:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:48:42,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:48:42,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:48:42,955 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 [2021-08-27 15:48:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:48:42,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:48:42,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:48:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:48:43,070 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 [2021-08-27 15:48:43,070 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 447 states and 807 transitions. cyclomatic complexity: 362 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) [2021-08-27 15:48:43,085 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 447 states and 807 transitions. cyclomatic complexity: 362. 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 867 states and 1573 transitions. Complement of second has 6 states. [2021-08-27 15:48:43,085 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 [2021-08-27 15:48:43,086 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) [2021-08-27 15:48:43,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 426 transitions. [2021-08-27 15:48:43,086 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 426 transitions. Stem has 20 letters. Loop has 9 letters. [2021-08-27 15:48:43,086 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:48:43,086 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 426 transitions. Stem has 29 letters. Loop has 9 letters. [2021-08-27 15:48:43,086 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:48:43,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 426 transitions. Stem has 20 letters. Loop has 18 letters. [2021-08-27 15:48:43,087 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:48:43,087 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 867 states and 1573 transitions. [2021-08-27 15:48:43,091 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:48:43,091 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 867 states to 0 states and 0 transitions. [2021-08-27 15:48:43,091 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 15:48:43,091 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 15:48:43,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 15:48:43,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:48:43,091 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:48:43,091 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:48:43,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:48:43,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 15:48:43,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 15:48:43,092 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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) [2021-08-27 15:48:43,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:48:43,092 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-08-27 15:48:43,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 15:48:43,093 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-08-27 15:48:43,093 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:48:43,093 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 15:48:43,093 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 15:48:43,093 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 15:48:43,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 15:48:43,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:48:43,093 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:48:43,093 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:48:43,094 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:48:43,094 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:48:43,094 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 15:48:43,094 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:48:43,094 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 15:48:43,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:48:43 BoogieIcfgContainer [2021-08-27 15:48:43,098 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:48:43,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:48:43,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:48:43,098 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:48:43,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:48:40" (3/4) ... [2021-08-27 15:48:43,100 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 15:48:43,100 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:48:43,101 INFO L168 Benchmark]: Toolchain (without parser) took 4571.98 ms. Allocated memory was 67.1 MB in the beginning and 228.6 MB in the end (delta: 161.5 MB). Free memory was 48.7 MB in the beginning and 144.5 MB in the end (delta: -95.9 MB). Peak memory consumption was 65.4 MB. Max. memory is 16.1 GB. [2021-08-27 15:48:43,101 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 48.2 MB. Free memory was 29.3 MB in the beginning and 29.3 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:48:43,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 584.67 ms. Allocated memory is still 67.1 MB. Free memory was 48.5 MB in the beginning and 37.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:48:43,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.41 ms. Allocated memory is still 67.1 MB. Free memory was 37.5 MB in the beginning and 42.6 MB in the end (delta: -5.1 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2021-08-27 15:48:43,103 INFO L168 Benchmark]: Boogie Preprocessor took 76.48 ms. Allocated memory is still 67.1 MB. Free memory was 42.6 MB in the beginning and 35.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 15:48:43,103 INFO L168 Benchmark]: RCFGBuilder took 1317.65 ms. Allocated memory was 67.1 MB in the beginning and 163.6 MB in the end (delta: 96.5 MB). Free memory was 35.7 MB in the beginning and 130.4 MB in the end (delta: -94.7 MB). Peak memory consumption was 60.3 MB. Max. memory is 16.1 GB. [2021-08-27 15:48:43,103 INFO L168 Benchmark]: BuchiAutomizer took 2499.42 ms. Allocated memory was 163.6 MB in the beginning and 228.6 MB in the end (delta: 65.0 MB). Free memory was 129.4 MB in the beginning and 144.5 MB in the end (delta: -15.2 MB). Peak memory consumption was 50.9 MB. Max. memory is 16.1 GB. [2021-08-27 15:48:43,104 INFO L168 Benchmark]: Witness Printer took 2.19 ms. Allocated memory is still 228.6 MB. Free memory is still 144.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:48:43,105 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 48.2 MB. Free memory was 29.3 MB in the beginning and 29.3 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 584.67 ms. Allocated memory is still 67.1 MB. Free memory was 48.5 MB in the beginning and 37.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.41 ms. Allocated memory is still 67.1 MB. Free memory was 37.5 MB in the beginning and 42.6 MB in the end (delta: -5.1 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.48 ms. Allocated memory is still 67.1 MB. Free memory was 42.6 MB in the beginning and 35.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1317.65 ms. Allocated memory was 67.1 MB in the beginning and 163.6 MB in the end (delta: 96.5 MB). Free memory was 35.7 MB in the beginning and 130.4 MB in the end (delta: -94.7 MB). Peak memory consumption was 60.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2499.42 ms. Allocated memory was 163.6 MB in the beginning and 228.6 MB in the end (delta: 65.0 MB). Free memory was 129.4 MB in the beginning and 144.5 MB in the end (delta: -15.2 MB). Peak memory consumption was 50.9 MB. Max. memory is 16.1 GB. * Witness Printer took 2.19 ms. Allocated memory is still 228.6 MB. Free memory is still 144.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * op2 + 1 and consists of 5 locations. One deterministic module has affine ranking function 7 + -2 * splverifierCounter and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 30.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 844 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 447 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 2920 SDtfs, 2507 SDslu, 3593 SDs, 0 SdLazy, 26 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.8ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital38 mio100 ax100 hnf100 lsp29 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq189 hnf90 smp100 dnf134 smp100 tf108 neg92 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-08-27 15:48:43,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...