./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/email_spec1_product16.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_spec1_product16.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 c4e5138a33887bc217290401a534f0801a059c18 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 15:48:00,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:48:00,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:48:00,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:48:00,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:48:00,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:48:00,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:48:00,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:48:00,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:48:00,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:48:00,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:48:00,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:48:00,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:48:00,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:48:00,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:48:00,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:48:00,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:48:00,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:48:00,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:48:00,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:48:00,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:48:00,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:48:00,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:48:00,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:48:00,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:48:00,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:48:00,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:48:00,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:48:00,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:48:00,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:48:00,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:48:00,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:48:00,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:48:00,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:48:00,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:48:00,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:48:00,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:48:00,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:48:00,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:48:00,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:48:00,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:48:00,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:48:00,499 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:48:00,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:48:00,500 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:48:00,500 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:48:00,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:48:00,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:48:00,502 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:48:00,502 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:48:00,502 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:48:00,502 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:48:00,503 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:48:00,503 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:48:00,503 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:48:00,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:48:00,503 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:48:00,504 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:48:00,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:48:00,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:48:00,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:48:00,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:48:00,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:48:00,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:48:00,515 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:48:00,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:48:00,516 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:48:00,516 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:48:00,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:48:00,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:48:00,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:48:00,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:48:00,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:48:00,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:48:00,518 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:48:00,518 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4e5138a33887bc217290401a534f0801a059c18 [2021-08-27 15:48:00,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:48:00,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:48:00,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:48:00,785 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:48:00,785 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:48:00,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec1_product16.cil.c [2021-08-27 15:48:00,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5308859ec/9e1cbccfa95f461788afe1837ea9d506/FLAG44a0d8e08 [2021-08-27 15:48:01,373 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:48:01,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec1_product16.cil.c [2021-08-27 15:48:01,387 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5308859ec/9e1cbccfa95f461788afe1837ea9d506/FLAG44a0d8e08 [2021-08-27 15:48:01,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5308859ec/9e1cbccfa95f461788afe1837ea9d506 [2021-08-27 15:48:01,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:48:01,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:48:01,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:48:01,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:48:01,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:48:01,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:48:01" (1/1) ... [2021-08-27 15:48:01,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1602016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:01, skipping insertion in model container [2021-08-27 15:48:01,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:48:01" (1/1) ... [2021-08-27 15:48:01,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:48:01,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:48:02,097 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_spec1_product16.cil.c[35792,35805] [2021-08-27 15:48:02,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:48:02,163 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:48:02,199 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_spec1_product16.cil.c[35792,35805] [2021-08-27 15:48:02,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:48:02,239 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:48:02,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:02 WrapperNode [2021-08-27 15:48:02,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:48:02,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:48:02,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:48:02,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:48:02,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:02" (1/1) ... [2021-08-27 15:48:02,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:02" (1/1) ... [2021-08-27 15:48:02,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:48:02,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:48:02,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:48:02,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:48:02,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:02" (1/1) ... [2021-08-27 15:48:02,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:02" (1/1) ... [2021-08-27 15:48:02,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:02" (1/1) ... [2021-08-27 15:48:02,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:02" (1/1) ... [2021-08-27 15:48:02,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:02" (1/1) ... [2021-08-27 15:48:02,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:02" (1/1) ... [2021-08-27 15:48:02,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:02" (1/1) ... [2021-08-27 15:48:02,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:48:02,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:48:02,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:48:02,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:48:02,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:02" (1/1) ... [2021-08-27 15:48:02,485 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:02,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:02,506 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 15:48:02,552 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 15:48:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-08-27 15:48:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:48:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:48:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:48:02,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:48:03,928 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:48:03,929 INFO L299 CfgBuilder]: Removed 291 assume(true) statements. [2021-08-27 15:48:03,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:48:03 BoogieIcfgContainer [2021-08-27 15:48:03,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:48:03,933 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:48:03,933 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:48:03,935 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:48:03,935 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:48:03,935 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:48:01" (1/3) ... [2021-08-27 15:48:03,936 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5483394c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:48:03, skipping insertion in model container [2021-08-27 15:48:03,936 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:48:03,936 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:48:02" (2/3) ... [2021-08-27 15:48:03,937 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5483394c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:48:03, skipping insertion in model container [2021-08-27 15:48:03,937 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:48:03,937 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:48:03" (3/3) ... [2021-08-27 15:48:03,937 INFO L389 chiAutomizerObserver]: Analyzing ICFG email_spec1_product16.cil.c [2021-08-27 15:48:03,962 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:48:03,962 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:48:03,962 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:48:03,962 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:48:03,963 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:48:03,963 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:48:03,963 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:48:03,963 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:48:03,977 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 447 states, 446 states have (on average 1.7443946188340806) internal successors, (778), 446 states have internal predecessors, (778), 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 15:48:04,012 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 212 [2021-08-27 15:48:04,013 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:48:04,013 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:48:04,018 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 15:48:04,018 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:48:04,018 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:48:04,019 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 447 states, 446 states have (on average 1.7443946188340806) internal successors, (778), 446 states have internal predecessors, (778), 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 15:48:04,028 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 212 [2021-08-27 15:48:04,028 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:48:04,028 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:48:04,029 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 15:48:04,029 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:48:04,032 INFO L791 eck$LassoCheckResult]: Stem: 437#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(28);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string7.base, #t~string7.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string7.base, #t~string7.offset, 1);call write~init~int(115, #t~string7.base, 1 + #t~string7.offset, 1);call write~init~int(10, #t~string7.base, 2 + #t~string7.offset, 1);call write~init~int(0, #t~string7.base, 3 + #t~string7.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(21);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(30);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(9);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(25);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(30);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(9);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(25);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(44);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(44);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(11);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(19);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string80.base, #t~string80.offset, 1);call write~init~int(100, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(10, #t~string80.base, 2 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 3 + #t~string80.offset, 1);call #t~string83.base, #t~string83.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string83.base, #t~string83.offset, 1);call write~init~int(100, #t~string83.base, 1 + #t~string83.offset, 1);call write~init~int(10, #t~string83.base, 2 + #t~string83.offset, 1);call write~init~int(0, #t~string83.base, 3 + #t~string83.offset, 1);call #t~string91.base, #t~string91.offset := #Ultimate.allocOnStack(10);call #t~string94.base, #t~string94.offset := #Ultimate.allocOnStack(12);call #t~string97.base, #t~string97.offset := #Ultimate.allocOnStack(10);call #t~string100.base, #t~string100.offset := #Ultimate.allocOnStack(18);call #t~string103.base, #t~string103.offset := #Ultimate.allocOnStack(16);call #t~string106.base, #t~string106.offset := #Ultimate.allocOnStack(21);call #t~string110.base, #t~string110.offset := #Ultimate.allocOnStack(10);call #t~string116.base, #t~string116.offset := #Ultimate.allocOnStack(16);call #t~string125.base, #t~string125.offset := #Ultimate.allocOnStack(20);call #t~string127.base, #t~string127.offset := #Ultimate.allocOnStack(21);~__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;~__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;~__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;~head~0.base, ~head~0.offset := 0, 0;~mail_is_sensitive~0 := -1;~bob~0 := 0;~rjh~0 := 0;~chuck~0 := 0;~queue_empty~0 := 1;~queued_message~0 := 0;~queued_client~0 := 0; 372#L-1true havoc main_#res;havoc main_#t~ret75, main_~retValue_acc~34, main_~tmp~8;havoc main_~retValue_acc~34;havoc main_~tmp~8; 354#L507true havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 32#L515true main_#t~ret75 := valid_product_#res;main_~tmp~8 := main_#t~ret75;havoc main_#t~ret75; 100#L2376true assume 0 != main_~tmp~8;havoc setup_#t~nondet70, setup_#t~nondet72, setup_#t~nondet74, setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset, setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset, setup_~__cil_tmp3~3.base, setup_~__cil_tmp3~3.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_tmp3~3.base, setup_~__cil_tmp3~3.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; 163#L1583true assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 74#L1589-2true 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; 24#L1148true assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 322#L1154-2true setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset := #t~string69.base, #t~string69.offset;havoc setup_#t~nondet70;~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; 245#L1583-2true assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 83#L1589-5true 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; 270#L1148-2true assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 194#L1154-5true setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset := #t~string71.base, #t~string71.offset;havoc setup_#t~nondet72;~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; 192#L1583-4true assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 261#L1589-8true 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; 364#L1148-4true assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 145#L1154-8true setup_~__cil_tmp3~3.base, setup_~__cil_tmp3~3.offset := #t~string73.base, #t~string73.offset;havoc setup_#t~nondet74; 323#L2363true havoc test_#t~nondet47, test_#t~nondet48, test_#t~nondet49, test_#t~nondet50, test_#t~nondet51, test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_#t~nondet56, test_#t~nondet57, 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~5, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0, test_~tmp___3~0, test_~tmp___4~0, 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~5;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;havoc test_~tmp___3~0;havoc test_~tmp___4~0;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; 294#L2169-1true [2021-08-27 15:48:04,032 INFO L793 eck$LassoCheckResult]: Loop: 294#L2169-1true assume !false; 337#L2024true assume test_~splverifierCounter~0 < 4; 335#L2025true test_~splverifierCounter~0 := 1 + test_~splverifierCounter~0; 49#L2031true assume !(0 == test_~op1~0); 398#L2044true assume 0 == test_~op2~0;test_~tmp___8~0 := test_#t~nondet48;havoc test_#t~nondet48; 241#L2049true assume 0 != test_~tmp___8~0;test_~op2~0 := 1; 294#L2169-1true [2021-08-27 15:48:04,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:48:04,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1291925977, now seen corresponding path program 1 times [2021-08-27 15:48:04,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:48:04,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341418738] [2021-08-27 15:48:04,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:48:04,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:48:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:48:04,239 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 15:48:04,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:48:04,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341418738] [2021-08-27 15:48:04,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341418738] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:48:04,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:48:04,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:48:04,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013367811] [2021-08-27 15:48:04,245 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 15:48:04,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:48:04,245 INFO L82 PathProgramCache]: Analyzing trace with hash 590492675, now seen corresponding path program 1 times [2021-08-27 15:48:04,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:48:04,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176073126] [2021-08-27 15:48:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:48:04,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:48:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:48:04,252 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:48:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:48:04,271 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:48:04,315 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:48:04,315 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:48:04,315 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:48:04,315 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:48:04,316 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:48:04,316 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:04,316 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:48:04,316 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:48:04,316 INFO L133 ssoRankerPreferences]: Filename of dumped script: email_spec1_product16.cil.c_Iteration1_Loop [2021-08-27 15:48:04,316 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:48:04,316 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:48:04,328 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 15:48:04,335 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 15:48:04,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:04,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:04,396 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:48:04,397 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:48:04,398 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:04,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:04,413 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 15:48:04,439 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 15:48:04,439 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:48:04,439 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:48:04,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-08-27 15:48:04,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:04,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:04,479 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 15:48:04,480 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 15:48:04,492 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:48:04,492 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:48:04,505 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:48:04,521 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 15:48:04,521 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:48:04,521 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:48:04,521 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:48:04,521 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:48:04,521 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:48:04,521 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:04,521 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:48:04,521 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:48:04,521 INFO L133 ssoRankerPreferences]: Filename of dumped script: email_spec1_product16.cil.c_Iteration1_Loop [2021-08-27 15:48:04,521 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:48:04,521 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:48:04,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:48:04,527 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 15:48:04,531 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 15:48:04,535 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 15:48:04,595 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:48:04,598 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:48:04,601 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:04,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:04,617 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 15:48:04,617 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 15:48:04,630 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 15:48:04,636 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:48:04,636 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:48:04,637 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:48:04,637 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:48:04,637 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:48:04,639 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:48:04,639 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:48:04,652 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:48:04,671 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 15:48:04,671 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 15:48:04,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:04,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:04,685 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 15:48:04,709 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:48:04,709 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:48:04,709 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:48:04,710 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 15:48:04,727 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 15:48:04,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-27 15:48:04,729 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:48:04,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:48:04,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-08-27 15:48:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:48:04,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:48:04,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:48:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:48:04,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:48:04,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:48:05,042 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 15:48:05,051 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 15:48:05,052 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 447 states, 446 states have (on average 1.7443946188340806) internal successors, (778), 446 states have internal predecessors, (778), 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 15:48:05,192 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 447 states, 446 states have (on average 1.7443946188340806) internal successors, (778), 446 states have internal predecessors, (778), 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 1908 states and 3302 transitions. Complement of second has 7 states. [2021-08-27 15:48:05,193 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 15:48:05,194 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 15:48:05,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1848 transitions. [2021-08-27 15:48:05,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 1848 transitions. Stem has 18 letters. Loop has 6 letters. [2021-08-27 15:48:05,197 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:48:05,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 1848 transitions. Stem has 24 letters. Loop has 6 letters. [2021-08-27 15:48:05,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:48:05,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 1848 transitions. Stem has 18 letters. Loop has 12 letters. [2021-08-27 15:48:05,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:48:05,199 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1908 states and 3302 transitions. [2021-08-27 15:48:05,212 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 423 [2021-08-27 15:48:05,224 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1908 states to 879 states and 1596 transitions. [2021-08-27 15:48:05,224 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 454 [2021-08-27 15:48:05,226 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 455 [2021-08-27 15:48:05,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 879 states and 1596 transitions. [2021-08-27 15:48:05,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:48:05,227 INFO L681 BuchiCegarLoop]: Abstraction has 879 states and 1596 transitions. [2021-08-27 15:48:05,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states and 1596 transitions. [2021-08-27 15:48:05,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 456. [2021-08-27 15:48:05,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 456 states have (on average 1.8092105263157894) internal successors, (825), 455 states have internal predecessors, (825), 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 15:48:05,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 825 transitions. [2021-08-27 15:48:05,274 INFO L704 BuchiCegarLoop]: Abstraction has 456 states and 825 transitions. [2021-08-27 15:48:05,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:48:05,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:48:05,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:48:05,278 INFO L87 Difference]: Start difference. First operand 456 states and 825 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 15:48:05,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:48:05,317 INFO L93 Difference]: Finished difference Result 892 states and 1615 transitions. [2021-08-27 15:48:05,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:48:05,317 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 892 states and 1615 transitions. [2021-08-27 15:48:05,321 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 424 [2021-08-27 15:48:05,326 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 892 states to 892 states and 1615 transitions. [2021-08-27 15:48:05,326 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 466 [2021-08-27 15:48:05,327 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 466 [2021-08-27 15:48:05,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 892 states and 1615 transitions. [2021-08-27 15:48:05,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:48:05,328 INFO L681 BuchiCegarLoop]: Abstraction has 892 states and 1615 transitions. [2021-08-27 15:48:05,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states and 1615 transitions. [2021-08-27 15:48:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 455. [2021-08-27 15:48:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 455 states have (on average 1.8043956043956044) internal successors, (821), 454 states have internal predecessors, (821), 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 15:48:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 821 transitions. [2021-08-27 15:48:05,345 INFO L704 BuchiCegarLoop]: Abstraction has 455 states and 821 transitions. [2021-08-27 15:48:05,345 INFO L587 BuchiCegarLoop]: Abstraction has 455 states and 821 transitions. [2021-08-27 15:48:05,345 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:48:05,346 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 455 states and 821 transitions. [2021-08-27 15:48:05,347 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 212 [2021-08-27 15:48:05,347 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:48:05,347 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:48:05,350 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 15:48:05,350 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:48:05,350 INFO L791 eck$LassoCheckResult]: Stem: 4254#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(28);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string7.base, #t~string7.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string7.base, #t~string7.offset, 1);call write~init~int(115, #t~string7.base, 1 + #t~string7.offset, 1);call write~init~int(10, #t~string7.base, 2 + #t~string7.offset, 1);call write~init~int(0, #t~string7.base, 3 + #t~string7.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(21);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(30);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(9);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(25);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(30);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(9);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(25);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(44);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(44);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(11);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(19);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string80.base, #t~string80.offset, 1);call write~init~int(100, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(10, #t~string80.base, 2 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 3 + #t~string80.offset, 1);call #t~string83.base, #t~string83.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string83.base, #t~string83.offset, 1);call write~init~int(100, #t~string83.base, 1 + #t~string83.offset, 1);call write~init~int(10, #t~string83.base, 2 + #t~string83.offset, 1);call write~init~int(0, #t~string83.base, 3 + #t~string83.offset, 1);call #t~string91.base, #t~string91.offset := #Ultimate.allocOnStack(10);call #t~string94.base, #t~string94.offset := #Ultimate.allocOnStack(12);call #t~string97.base, #t~string97.offset := #Ultimate.allocOnStack(10);call #t~string100.base, #t~string100.offset := #Ultimate.allocOnStack(18);call #t~string103.base, #t~string103.offset := #Ultimate.allocOnStack(16);call #t~string106.base, #t~string106.offset := #Ultimate.allocOnStack(21);call #t~string110.base, #t~string110.offset := #Ultimate.allocOnStack(10);call #t~string116.base, #t~string116.offset := #Ultimate.allocOnStack(16);call #t~string125.base, #t~string125.offset := #Ultimate.allocOnStack(20);call #t~string127.base, #t~string127.offset := #Ultimate.allocOnStack(21);~__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;~__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;~__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;~head~0.base, ~head~0.offset := 0, 0;~mail_is_sensitive~0 := -1;~bob~0 := 0;~rjh~0 := 0;~chuck~0 := 0;~queue_empty~0 := 1;~queued_message~0 := 0;~queued_client~0 := 0; 4208#L-1 havoc main_#res;havoc main_#t~ret75, main_~retValue_acc~34, main_~tmp~8;havoc main_~retValue_acc~34;havoc main_~tmp~8; 4169#L507 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 3923#L515 main_#t~ret75 := valid_product_#res;main_~tmp~8 := main_#t~ret75;havoc main_#t~ret75; 3924#L2376 assume 0 != main_~tmp~8;havoc setup_#t~nondet70, setup_#t~nondet72, setup_#t~nondet74, setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset, setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset, setup_~__cil_tmp3~3.base, setup_~__cil_tmp3~3.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_tmp3~3.base, setup_~__cil_tmp3~3.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; 4126#L1583 assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 4058#L1589-2 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; 3899#L1148 assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 3900#L1154-2 setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset := #t~string69.base, #t~string69.offset;havoc setup_#t~nondet70;~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; 3889#L1583-2 assume !(1 == setClientId_~handle); 3890#L1586-2 assume 2 == setClientId_~handle;~__ste_client_idCounter1~0 := setClientId_~value; 4093#L1589-5 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; 3950#L1148-2 assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 3951#L1154-5 setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset := #t~string71.base, #t~string71.offset;havoc setup_#t~nondet72;~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; 4238#L1583-4 assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 3927#L1589-8 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; 3928#L1148-4 assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 3940#L1154-8 setup_~__cil_tmp3~3.base, setup_~__cil_tmp3~3.offset := #t~string73.base, #t~string73.offset;havoc setup_#t~nondet74; 4094#L2363 havoc test_#t~nondet47, test_#t~nondet48, test_#t~nondet49, test_#t~nondet50, test_#t~nondet51, test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_#t~nondet56, test_#t~nondet57, 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~5, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0, test_~tmp___3~0, test_~tmp___4~0, 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~5;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;havoc test_~tmp___3~0;havoc test_~tmp___4~0;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; 4095#L2169-1 assume !false; 4018#L2024 [2021-08-27 15:48:05,350 INFO L793 eck$LassoCheckResult]: Loop: 4018#L2024 assume test_~splverifierCounter~0 < 4; 4129#L2025 test_~splverifierCounter~0 := 1 + test_~splverifierCounter~0; 3961#L2031 assume !(0 == test_~op1~0); 3963#L2044 assume !(0 == test_~op2~0); 3875#L2055 assume 0 == test_~op3~0;test_~tmp___7~0 := test_#t~nondet49;havoc test_#t~nondet49; 3812#L2060 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; 3814#L1148-6 assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 3850#L1154-11 test_~op3~0 := 1; 3925#L2169-1 assume !false; 4018#L2024 [2021-08-27 15:48:05,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:48:05,351 INFO L82 PathProgramCache]: Analyzing trace with hash -953559564, now seen corresponding path program 1 times [2021-08-27 15:48:05,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:48:05,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036536335] [2021-08-27 15:48:05,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:48:05,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:48:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:48:05,480 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 15:48:05,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:48:05,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036536335] [2021-08-27 15:48:05,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036536335] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:48:05,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:48:05,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 15:48:05,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534643090] [2021-08-27 15:48:05,481 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 15:48:05,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:48:05,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1296812605, now seen corresponding path program 1 times [2021-08-27 15:48:05,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:48:05,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809976282] [2021-08-27 15:48:05,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:48:05,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:48:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:48:05,487 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:48:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:48:05,507 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:48:05,599 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:48:05,599 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:48:05,599 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:48:05,599 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:48:05,599 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:48:05,599 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:05,599 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:48:05,600 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:48:05,600 INFO L133 ssoRankerPreferences]: Filename of dumped script: email_spec1_product16.cil.c_Iteration2_Loop [2021-08-27 15:48:05,600 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:48:05,600 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:48:05,602 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 15:48:05,607 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 15:48:05,613 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 15:48:05,615 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 15:48:05,620 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 15:48:05,626 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 15:48:05,628 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 15:48:05,740 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:48:05,740 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:48:05,740 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:05,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:05,757 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 15:48:05,768 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 15:48:05,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:48:05,768 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:48:05,789 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:48:05,789 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_test_~tmp___7~0=7, ULTIMATE.start_test_#t~nondet49=7} Honda state: {ULTIMATE.start_test_~tmp___7~0=7, ULTIMATE.start_test_#t~nondet49=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 15:48:05,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-08-27 15:48:05,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:05,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:05,822 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 15:48:05,847 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 15:48:05,848 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:48:05,848 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:48:05,880 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 15:48:05,881 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:05,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:05,882 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 15:48:05,882 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 15:48:05,905 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:48:05,905 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:48:05,938 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:48:05,941 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 15:48:05,942 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:48:05,942 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:48:05,942 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:48:05,942 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:48:05,942 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:48:05,942 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:05,942 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:48:05,942 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:48:05,942 INFO L133 ssoRankerPreferences]: Filename of dumped script: email_spec1_product16.cil.c_Iteration2_Loop [2021-08-27 15:48:05,942 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:48:05,942 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:48:05,943 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 15:48:05,950 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 15:48:05,954 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 15:48:05,956 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 15:48:05,974 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 15:48:05,979 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 15:48:05,981 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 15:48:06,075 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:48:06,075 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:48:06,076 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:06,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:06,076 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 15:48:06,077 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 15:48:06,078 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 15:48:06,084 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:48:06,085 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:48:06,085 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:48:06,085 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-27 15:48:06,085 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:48:06,086 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-08-27 15:48:06,086 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:48:06,106 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:48:06,121 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 15:48:06,122 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:06,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:06,123 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 15:48:06,123 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 15:48:06,124 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 15:48:06,130 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:48:06,130 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:48:06,131 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:48:06,131 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:48:06,131 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:48:06,131 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:48:06,131 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:48:06,136 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:48:06,137 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 15:48:06,137 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 15:48:06,137 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:48:06,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:48:06,138 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 15:48:06,139 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 15:48:06,140 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:48:06,140 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:48:06,140 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:48:06,140 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 15:48:06,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-08-27 15:48:06,156 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:48:06,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:48:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:48:06,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:48:06,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:48:06,307 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 15:48:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:48:06,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:48:06,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:48:06,469 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 15:48:06,470 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 15:48:06,470 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 455 states and 821 transitions. cyclomatic complexity: 368 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 15:48:06,488 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 455 states and 821 transitions. cyclomatic complexity: 368. 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 883 states and 1601 transitions. Complement of second has 6 states. [2021-08-27 15:48:06,488 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 15:48:06,488 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 15:48:06,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 433 transitions. [2021-08-27 15:48:06,489 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 433 transitions. Stem has 20 letters. Loop has 9 letters. [2021-08-27 15:48:06,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:48:06,490 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 433 transitions. Stem has 29 letters. Loop has 9 letters. [2021-08-27 15:48:06,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:48:06,490 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 433 transitions. Stem has 20 letters. Loop has 18 letters. [2021-08-27 15:48:06,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:48:06,493 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 883 states and 1601 transitions. [2021-08-27 15:48:06,497 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:48:06,497 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 883 states to 0 states and 0 transitions. [2021-08-27 15:48:06,497 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 15:48:06,497 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 15:48:06,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 15:48:06,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:48:06,497 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:48:06,498 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:48:06,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:48:06,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 15:48:06,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 15:48:06,499 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 15:48:06,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:48:06,499 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-08-27 15:48:06,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 15:48:06,499 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-08-27 15:48:06,499 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:48:06,499 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 15:48:06,499 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 15:48:06,499 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 15:48:06,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 15:48:06,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:48:06,500 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:48:06,500 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:48:06,500 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:48:06,501 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:48:06,501 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 15:48:06,501 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:48:06,501 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 15:48:06,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:48:06 BoogieIcfgContainer [2021-08-27 15:48:06,505 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:48:06,506 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:48:06,506 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:48:06,506 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:48:06,507 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:48:03" (3/4) ... [2021-08-27 15:48:06,509 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 15:48:06,509 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:48:06,511 INFO L168 Benchmark]: Toolchain (without parser) took 4670.99 ms. Allocated memory was 88.1 MB in the beginning and 237.0 MB in the end (delta: 148.9 MB). Free memory was 51.2 MB in the beginning and 142.3 MB in the end (delta: -91.1 MB). Peak memory consumption was 58.3 MB. Max. memory is 16.1 GB. [2021-08-27 15:48:06,514 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 88.1 MB. Free memory was 70.6 MB in the beginning and 70.5 MB in the end (delta: 71.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:48:06,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.59 ms. Allocated memory is still 88.1 MB. Free memory was 51.0 MB in the beginning and 47.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2021-08-27 15:48:06,515 INFO L168 Benchmark]: Boogie Procedure Inliner took 130.28 ms. Allocated memory is still 88.1 MB. Free memory was 47.4 MB in the beginning and 64.2 MB in the end (delta: -16.8 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-08-27 15:48:06,515 INFO L168 Benchmark]: Boogie Preprocessor took 98.65 ms. Allocated memory is still 88.1 MB. Free memory was 64.2 MB in the beginning and 57.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 15:48:06,516 INFO L168 Benchmark]: RCFGBuilder took 1461.04 ms. Allocated memory was 88.1 MB in the beginning and 132.1 MB in the end (delta: 44.0 MB). Free memory was 57.6 MB in the beginning and 63.6 MB in the end (delta: -6.0 MB). Peak memory consumption was 50.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:48:06,517 INFO L168 Benchmark]: BuchiAutomizer took 2573.03 ms. Allocated memory was 132.1 MB in the beginning and 237.0 MB in the end (delta: 104.9 MB). Free memory was 63.6 MB in the beginning and 142.3 MB in the end (delta: -78.7 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:48:06,518 INFO L168 Benchmark]: Witness Printer took 3.23 ms. Allocated memory is still 237.0 MB. Free memory is still 142.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:48:06,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 88.1 MB. Free memory was 70.6 MB in the beginning and 70.5 MB in the end (delta: 71.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 400.59 ms. Allocated memory is still 88.1 MB. Free memory was 51.0 MB in the beginning and 47.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 130.28 ms. Allocated memory is still 88.1 MB. Free memory was 47.4 MB in the beginning and 64.2 MB in the end (delta: -16.8 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 98.65 ms. Allocated memory is still 88.1 MB. Free memory was 64.2 MB in the beginning and 57.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1461.04 ms. Allocated memory was 88.1 MB in the beginning and 132.1 MB in the end (delta: 44.0 MB). Free memory was 57.6 MB in the beginning and 63.6 MB in the end (delta: -6.0 MB). Peak memory consumption was 50.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2573.03 ms. Allocated memory was 132.1 MB in the beginning and 237.0 MB in the end (delta: 104.9 MB). Free memory was 63.6 MB in the beginning and 142.3 MB in the end (delta: -78.7 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. * Witness Printer took 3.23 ms. Allocated memory is still 237.0 MB. Free memory is still 142.3 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 2.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. 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 56.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 860 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 455 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 2759 SDtfs, 2340 SDslu, 3341 SDs, 0 SdLazy, 26 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.3ms 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: 30ms 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 15:48:06,555 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...