./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f844ee25e08c400ffe9294b51b3c9849047d932ed3d2e45badb4ba2d0884ce06 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:16:53,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:16:53,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:16:53,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:16:53,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:16:53,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:16:53,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:16:53,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:16:53,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:16:53,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:16:53,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:16:53,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:16:53,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:16:53,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:16:53,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:16:53,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:16:53,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:16:53,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:16:53,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:16:53,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:16:53,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:16:53,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:16:53,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:16:53,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:16:53,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:16:53,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:16:53,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:16:53,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:16:53,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:16:53,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:16:53,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:16:53,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:16:53,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:16:53,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:16:53,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:16:53,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:16:53,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:16:53,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:16:53,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:16:53,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:16:53,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:16:53,501 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:16:53,532 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:16:53,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:16:53,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:16:53,534 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:16:53,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:16:53,535 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:16:53,536 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:16:53,536 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:16:53,537 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:16:53,537 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:16:53,537 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:16:53,538 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:16:53,538 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:16:53,539 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:16:53,539 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:16:53,539 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:16:53,540 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:16:53,540 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:16:53,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:16:53,541 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:16:53,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:16:53,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:16:53,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:16:53,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:16:53,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:16:53,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:16:53,544 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:16:53,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:16:53,545 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:16:53,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:16:53,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:16:53,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:16:53,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:16:53,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:16:53,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:16:53,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:16:53,548 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:16:53,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:16:53,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:16:53,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:16:53,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:16:53,550 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f844ee25e08c400ffe9294b51b3c9849047d932ed3d2e45badb4ba2d0884ce06 [2021-11-23 02:16:53,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:16:53,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:16:53,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:16:53,924 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:16:53,925 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:16:53,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec3_product32.cil.c [2021-11-23 02:16:54,012 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/data/80eda3a3f/48ca5c3864824f198a6506fc42e6179d/FLAG3acfabcf4 [2021-11-23 02:16:54,644 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:16:54,644 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c [2021-11-23 02:16:54,681 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/data/80eda3a3f/48ca5c3864824f198a6506fc42e6179d/FLAG3acfabcf4 [2021-11-23 02:16:54,873 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/data/80eda3a3f/48ca5c3864824f198a6506fc42e6179d [2021-11-23 02:16:54,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:16:54,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:16:54,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:54,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:16:54,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:16:54,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:54" (1/1) ... [2021-11-23 02:16:54,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b8ef19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:54, skipping insertion in model container [2021-11-23 02:16:54,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:54" (1/1) ... [2021-11-23 02:16:54,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:16:55,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:16:55,268 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c[1542,1555] [2021-11-23 02:16:55,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:55,749 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:16:55,767 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c[1542,1555] [2021-11-23 02:16:55,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:56,011 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:16:56,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:56 WrapperNode [2021-11-23 02:16:56,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:56,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:16:56,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:16:56,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:16:56,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:56" (1/1) ... [2021-11-23 02:16:56,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:56" (1/1) ... [2021-11-23 02:16:56,175 INFO L137 Inliner]: procedures = 135, calls = 246, calls flagged for inlining = 61, calls inlined = 53, statements flattened = 1019 [2021-11-23 02:16:56,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:16:56,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:16:56,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:16:56,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:16:56,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:56" (1/1) ... [2021-11-23 02:16:56,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:56" (1/1) ... [2021-11-23 02:16:56,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:56" (1/1) ... [2021-11-23 02:16:56,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:56" (1/1) ... [2021-11-23 02:16:56,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:56" (1/1) ... [2021-11-23 02:16:56,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:56" (1/1) ... [2021-11-23 02:16:56,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:56" (1/1) ... [2021-11-23 02:16:56,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:16:56,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:16:56,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:16:56,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:16:56,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:56" (1/1) ... [2021-11-23 02:16:56,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:16:56,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:56,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:16:56,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:16:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 02:16:56,432 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 02:16:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 02:16:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 02:16:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 02:16:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 02:16:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 02:16:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 02:16:56,434 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 02:16:56,434 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 02:16:56,434 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:16:56,434 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:16:56,434 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-11-23 02:16:56,434 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-11-23 02:16:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:16:56,435 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:16:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:16:56,435 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:16:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:16:56,435 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:16:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 02:16:56,436 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 02:16:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 02:16:56,436 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 02:16:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:16:56,436 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:16:56,437 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:16:56,437 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:16:56,437 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:16:56,437 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:16:56,437 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:16:56,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:16:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 02:16:56,438 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 02:16:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 02:16:56,438 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 02:16:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 02:16:56,438 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 02:16:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:16:56,439 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:16:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-23 02:16:56,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-23 02:16:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:16:56,439 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:16:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:16:56,440 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:16:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 02:16:56,440 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 02:16:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:16:56,441 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:16:56,441 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 02:16:56,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 02:16:56,441 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:16:56,441 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:16:56,441 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:16:56,441 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:16:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:16:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:16:56,442 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:16:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 02:16:56,442 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 02:16:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:16:56,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:16:56,858 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:16:56,861 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:16:57,934 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:16:58,566 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:16:58,566 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:16:58,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:58 BoogieIcfgContainer [2021-11-23 02:16:58,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:16:58,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:16:58,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:16:58,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:16:58,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:16:54" (1/3) ... [2021-11-23 02:16:58,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16326193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:58, skipping insertion in model container [2021-11-23 02:16:58,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:56" (2/3) ... [2021-11-23 02:16:58,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16326193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:58, skipping insertion in model container [2021-11-23 02:16:58,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:58" (3/3) ... [2021-11-23 02:16:58,586 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product32.cil.c [2021-11-23 02:16:58,594 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:16:58,594 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:16:58,673 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:16:58,684 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:16:58,685 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:16:58,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 229 states, 128 states have (on average 1.3046875) internal successors, (167), 135 states have internal predecessors, (167), 70 states have call successors, (70), 29 states have call predecessors, (70), 29 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2021-11-23 02:16:58,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-23 02:16:58,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:58,747 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:58,747 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:58,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:58,755 INFO L85 PathProgramCache]: Analyzing trace with hash 415967150, now seen corresponding path program 1 times [2021-11-23 02:16:58,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:58,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773560941] [2021-11-23 02:16:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:58,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:59,161 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 02:16:59,161 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:59,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773560941] [2021-11-23 02:16:59,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773560941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:59,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:59,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:16:59,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494893079] [2021-11-23 02:16:59,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:59,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:16:59,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:59,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:16:59,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:16:59,206 INFO L87 Difference]: Start difference. First operand has 229 states, 128 states have (on average 1.3046875) internal successors, (167), 135 states have internal predecessors, (167), 70 states have call successors, (70), 29 states have call predecessors, (70), 29 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:16:59,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:59,417 INFO L93 Difference]: Finished difference Result 365 states and 485 transitions. [2021-11-23 02:16:59,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:16:59,420 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 101 [2021-11-23 02:16:59,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:59,436 INFO L225 Difference]: With dead ends: 365 [2021-11-23 02:16:59,436 INFO L226 Difference]: Without dead ends: 225 [2021-11-23 02:16:59,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:16:59,457 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:59,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 260 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:16:59,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-23 02:16:59,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-11-23 02:16:59,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 126 states have (on average 1.2777777777777777) internal successors, (161), 131 states have internal predecessors, (161), 70 states have call successors, (70), 29 states have call predecessors, (70), 28 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2021-11-23 02:16:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 298 transitions. [2021-11-23 02:16:59,578 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 298 transitions. Word has length 101 [2021-11-23 02:16:59,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:59,580 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 298 transitions. [2021-11-23 02:16:59,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:16:59,581 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 298 transitions. [2021-11-23 02:16:59,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-23 02:16:59,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:59,598 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:59,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:16:59,600 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:59,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:59,605 INFO L85 PathProgramCache]: Analyzing trace with hash -483556752, now seen corresponding path program 1 times [2021-11-23 02:16:59,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:59,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044125056] [2021-11-23 02:16:59,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:59,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:59,857 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 02:16:59,858 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:59,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044125056] [2021-11-23 02:16:59,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044125056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:59,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:59,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:16:59,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042142804] [2021-11-23 02:16:59,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:59,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:16:59,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:59,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:16:59,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:16:59,865 INFO L87 Difference]: Start difference. First operand 225 states and 298 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:17:00,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:00,074 INFO L93 Difference]: Finished difference Result 360 states and 466 transitions. [2021-11-23 02:17:00,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:17:00,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 102 [2021-11-23 02:17:00,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:00,087 INFO L225 Difference]: With dead ends: 360 [2021-11-23 02:17:00,087 INFO L226 Difference]: Without dead ends: 227 [2021-11-23 02:17:00,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:00,096 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 0 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:00,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 513 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:17:00,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-23 02:17:00,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-23 02:17:00,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 128 states have (on average 1.2734375) internal successors, (163), 133 states have internal predecessors, (163), 70 states have call successors, (70), 29 states have call predecessors, (70), 28 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2021-11-23 02:17:00,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 300 transitions. [2021-11-23 02:17:00,145 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 300 transitions. Word has length 102 [2021-11-23 02:17:00,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:00,148 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 300 transitions. [2021-11-23 02:17:00,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:17:00,149 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 300 transitions. [2021-11-23 02:17:00,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 02:17:00,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:00,154 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:00,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:17:00,155 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:17:00,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:00,155 INFO L85 PathProgramCache]: Analyzing trace with hash 758514904, now seen corresponding path program 1 times [2021-11-23 02:17:00,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:00,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667769296] [2021-11-23 02:17:00,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:00,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 02:17:00,302 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:00,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667769296] [2021-11-23 02:17:00,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667769296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:00,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:00,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:17:00,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401531678] [2021-11-23 02:17:00,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:00,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:17:00,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:00,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:17:00,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:00,306 INFO L87 Difference]: Start difference. First operand 227 states and 300 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:17:00,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:00,439 INFO L93 Difference]: Finished difference Result 489 states and 667 transitions. [2021-11-23 02:17:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:17:00,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 107 [2021-11-23 02:17:00,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:00,445 INFO L225 Difference]: With dead ends: 489 [2021-11-23 02:17:00,445 INFO L226 Difference]: Without dead ends: 280 [2021-11-23 02:17:00,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:00,455 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 59 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:00,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 527 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:17:00,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-23 02:17:00,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 275. [2021-11-23 02:17:00,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 162 states have (on average 1.345679012345679) internal successors, (218), 167 states have internal predecessors, (218), 84 states have call successors, (84), 29 states have call predecessors, (84), 28 states have return successors, (81), 80 states have call predecessors, (81), 81 states have call successors, (81) [2021-11-23 02:17:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 383 transitions. [2021-11-23 02:17:00,522 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 383 transitions. Word has length 107 [2021-11-23 02:17:00,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:00,523 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 383 transitions. [2021-11-23 02:17:00,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:17:00,524 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 383 transitions. [2021-11-23 02:17:00,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 02:17:00,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:00,533 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:00,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:17:00,534 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:17:00,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:00,535 INFO L85 PathProgramCache]: Analyzing trace with hash -374903722, now seen corresponding path program 1 times [2021-11-23 02:17:00,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:00,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453594612] [2021-11-23 02:17:00,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:00,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 02:17:00,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:00,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453594612] [2021-11-23 02:17:00,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453594612] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:17:00,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008818174] [2021-11-23 02:17:00,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:00,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:00,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:17:00,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:17:00,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:17:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:01,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:17:01,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:01,537 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 02:17:01,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:17:01,791 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 02:17:01,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008818174] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:17:01,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [250107759] [2021-11-23 02:17:01,822 INFO L159 IcfgInterpreter]: Started Sifa with 87 locations of interest [2021-11-23 02:17:01,822 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:17:01,828 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:17:01,835 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:17:01,835 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:17:31,183 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:17:31,507 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 272 for LOIs [2021-11-23 02:17:33,772 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:17:34,240 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 274 for LOIs [2021-11-23 02:17:38,339 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 240 for LOIs [2021-11-23 02:17:38,397 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 232 for LOIs [2021-11-23 02:17:38,451 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 240 for LOIs [2021-11-23 02:17:38,502 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 257 for LOIs [2021-11-23 02:17:38,575 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:18:25,135 WARN L227 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 512 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:31,648 WARN L227 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 564 DAG size of output: 376 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:38,977 WARN L227 SmtUtils]: Spent 6.84s on a formula simplification. DAG size of input: 566 DAG size of output: 402 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:53,884 WARN L227 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 563 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:59,938 WARN L227 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 556 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:33,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [250107759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:19:33,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:19:33,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [4, 4, 4] total 46 [2021-11-23 02:19:33,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318709626] [2021-11-23 02:19:33,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:19:33,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-23 02:19:33,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:19:33,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-23 02:19:33,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1950, Unknown=0, NotChecked=0, Total=2070 [2021-11-23 02:19:33,498 INFO L87 Difference]: Start difference. First operand 275 states and 383 transitions. Second operand has 41 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 25 states have internal predecessors, (51), 13 states have call successors, (25), 9 states have call predecessors, (25), 7 states have return successors, (21), 11 states have call predecessors, (21), 11 states have call successors, (21) [2021-11-23 02:20:23,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:20:23,782 INFO L93 Difference]: Finished difference Result 715 states and 1085 transitions. [2021-11-23 02:20:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-23 02:20:23,783 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 25 states have internal predecessors, (51), 13 states have call successors, (25), 9 states have call predecessors, (25), 7 states have return successors, (21), 11 states have call predecessors, (21), 11 states have call successors, (21) Word has length 108 [2021-11-23 02:20:23,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:20:23,789 INFO L225 Difference]: With dead ends: 715 [2021-11-23 02:20:23,789 INFO L226 Difference]: Without dead ends: 458 [2021-11-23 02:20:23,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 281 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 143.0s TimeCoverageRelationStatistics Valid=175, Invalid=2687, Unknown=0, NotChecked=0, Total=2862 [2021-11-23 02:20:23,794 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 276 mSDsluCounter, 6376 mSDsCounter, 0 mSdLazyCounter, 6491 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 6551 SdHoareTripleChecker+Invalid, 6527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 6491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:20:23,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 6551 Invalid, 6527 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [36 Valid, 6491 Invalid, 0 Unknown, 0 Unchecked, 21.6s Time] [2021-11-23 02:20:23,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-23 02:20:23,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 357. [2021-11-23 02:20:23,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 233 states have (on average 1.4163090128755365) internal successors, (330), 238 states have internal predecessors, (330), 90 states have call successors, (90), 36 states have call predecessors, (90), 33 states have return successors, (87), 84 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-23 02:20:23,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 507 transitions. [2021-11-23 02:20:23,917 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 507 transitions. Word has length 108 [2021-11-23 02:20:23,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:20:23,917 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 507 transitions. [2021-11-23 02:20:23,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 25 states have internal predecessors, (51), 13 states have call successors, (25), 9 states have call predecessors, (25), 7 states have return successors, (21), 11 states have call predecessors, (21), 11 states have call successors, (21) [2021-11-23 02:20:23,918 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 507 transitions. [2021-11-23 02:20:23,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 02:20:23,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:20:23,921 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:20:23,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 02:20:24,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:20:24,125 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:20:24,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:20:24,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1836959273, now seen corresponding path program 1 times [2021-11-23 02:20:24,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:20:24,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074754450] [2021-11-23 02:20:24,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:20:24,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:20:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:20:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:20:24,247 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:20:24,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074754450] [2021-11-23 02:20:24,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074754450] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:20:24,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476111500] [2021-11-23 02:20:24,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:20:24,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:20:24,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:20:24,250 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:20:24,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:20:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:20:24,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:20:24,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:20:24,909 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:20:24,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:20:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:20:25,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476111500] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:20:25,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1245068876] [2021-11-23 02:20:25,240 INFO L159 IcfgInterpreter]: Started Sifa with 80 locations of interest [2021-11-23 02:20:25,241 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:20:25,242 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:20:25,243 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:20:25,243 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:20:49,762 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:20:50,072 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 272 for LOIs [2021-11-23 02:20:52,220 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 240 for LOIs [2021-11-23 02:20:52,269 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:20:52,584 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 272 for LOIs [2021-11-23 02:20:57,383 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 454 for LOIs [2021-11-23 02:21:17,485 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 249 for LOIs [2021-11-23 02:21:17,530 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 457 for LOIs [2021-11-23 02:21:18,102 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 445 for LOIs [2021-11-23 02:21:18,741 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 252 for LOIs [2021-11-23 02:21:18,795 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 250 for LOIs [2021-11-23 02:21:18,847 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2021-11-23 02:21:20,595 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 254 for LOIs [2021-11-23 02:21:20,657 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 257 for LOIs [2021-11-23 02:21:20,726 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:22:02,957 WARN L227 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 502 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:22:11,158 WARN L227 SmtUtils]: Spent 6.76s on a formula simplification. DAG size of input: 512 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:22:18,796 WARN L227 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 564 DAG size of output: 376 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:22:26,999 WARN L227 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 566 DAG size of output: 402 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:22:42,734 WARN L227 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 563 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:22:48,863 WARN L227 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 556 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:22:59,655 WARN L227 SmtUtils]: Spent 7.31s on a formula simplification. DAG size of input: 476 DAG size of output: 282 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:23:30,269 WARN L227 SmtUtils]: Spent 11.65s on a formula simplification. DAG size of input: 457 DAG size of output: 351 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:23:45,550 WARN L227 SmtUtils]: Spent 13.03s on a formula simplification. DAG size of input: 483 DAG size of output: 367 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:24:36,773 WARN L227 SmtUtils]: Spent 11.43s on a formula simplification. DAG size of input: 445 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:24:53,801 WARN L227 SmtUtils]: Spent 13.11s on a formula simplification. DAG size of input: 504 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:05,116 WARN L227 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 482 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:12,525 WARN L227 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 524 DAG size of output: 372 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:27,169 WARN L227 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 543 DAG size of output: 382 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:26:08,629 WARN L227 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 626 DAG size of output: 438 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:26:15,862 WARN L227 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 626 DAG size of output: 438 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:26:23,443 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6419#(and (= ~__ste_Client_Keyring1_User2~0 0) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= ~__ste_email_encryptionKey1~0 0) (<= ~__ste_email_isSignatureVerified1~0 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (<= 0 ~__ste_client_autoResponse1~0) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= ~__ste_email_isSignatureVerified0~0 0) (= ~__ste_email_body1~0.offset 0) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (= ~__ste_Email_counter~0 0) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (<= 0 ~__ste_email_isSigned1~0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (= ~sent_signed~0 1) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= ~queue_empty~0 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 0 ~__ste_email_isEncrypted1~0) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (= ~__ste_Client_Keyring0_User0~0 0) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (= ~__ste_email_id0~0 0) (<= ~__ste_client_autoResponse0~0 0) (= ~__ste_Client_Keyring2_User1~0 0) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 0 ~__ste_email_signKey1~0) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= ~__ste_email_isSigned1~0 0) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (<= 0 ~__ste_client_autoResponse0~0) (<= 0 ~queued_message~0) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_email_isSignatureVerified1~0) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (= ~__SELECTED_FEATURE_Base~0 0) (= ~__ste_client_forwardReceiver0~0 0) (= ~__ste_Client_Keyring2_User0~0 0) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= ~__ste_email_encryptionKey0~0 0) (= ~__ste_email_subject1~0.base 0) (= ~__ste_Client_AddressBook1_Alias0~0 0) (= ~__ste_Client_Keyring2_User2~0 0) (= ~head~0.base 0) (= ~__ste_Client_Keyring1_User1~0 0) (= |#NULL.offset| 0) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= 0 ~__ste_email_isSigned0~0) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (= ~__ste_Client_AddressBook1_Address1~0 0) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= ~__ste_email_isEncrypted1~0 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_body1~0.base 0) (= ~__ste_ClientKeyring_size2~0 0) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= ~queued_client~0 0))' at error location [2021-11-23 02:26:23,443 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:26:23,444 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:26:23,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 02:26:23,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735290720] [2021-11-23 02:26:23,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:26:23,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:26:23,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:23,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:26:23,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=5459, Unknown=0, NotChecked=0, Total=5700 [2021-11-23 02:26:23,454 INFO L87 Difference]: Start difference. First operand 357 states and 507 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 02:26:24,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:24,001 INFO L93 Difference]: Finished difference Result 876 states and 1309 transitions. [2021-11-23 02:26:24,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:26:24,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 97 [2021-11-23 02:26:24,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:24,009 INFO L225 Difference]: With dead ends: 876 [2021-11-23 02:26:24,009 INFO L226 Difference]: Without dead ends: 722 [2021-11-23 02:26:24,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 214 SyntacticMatches, 5 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 302.7s TimeCoverageRelationStatistics Valid=241, Invalid=5459, Unknown=0, NotChecked=0, Total=5700 [2021-11-23 02:26:24,016 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 207 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:24,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 971 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:26:24,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2021-11-23 02:26:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 703. [2021-11-23 02:26:24,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 500 states have (on average 1.5) internal successors, (750), 505 states have internal predecessors, (750), 169 states have call successors, (169), 36 states have call predecessors, (169), 33 states have return successors, (166), 163 states have call predecessors, (166), 166 states have call successors, (166) [2021-11-23 02:26:24,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1085 transitions. [2021-11-23 02:26:24,258 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1085 transitions. Word has length 97 [2021-11-23 02:26:24,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:24,258 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 1085 transitions. [2021-11-23 02:26:24,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 02:26:24,259 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1085 transitions. [2021-11-23 02:26:24,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-23 02:26:24,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:24,265 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:24,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 02:26:24,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:26:24,481 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:24,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:24,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1025181131, now seen corresponding path program 1 times [2021-11-23 02:26:24,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:24,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513540497] [2021-11-23 02:26:24,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:24,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:26:24,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:24,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513540497] [2021-11-23 02:26:24,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513540497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:24,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:24,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:26:24,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411005961] [2021-11-23 02:26:24,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:24,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:26:24,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:24,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:26:24,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:24,575 INFO L87 Difference]: Start difference. First operand 703 states and 1085 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:26:25,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:25,169 INFO L93 Difference]: Finished difference Result 1596 states and 2503 transitions. [2021-11-23 02:26:25,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:26:25,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 112 [2021-11-23 02:26:25,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:25,181 INFO L225 Difference]: With dead ends: 1596 [2021-11-23 02:26:25,182 INFO L226 Difference]: Without dead ends: 998 [2021-11-23 02:26:25,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:25,187 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 57 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:25,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 533 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:26:25,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2021-11-23 02:26:25,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 991. [2021-11-23 02:26:25,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 709 states have (on average 1.4922425952045133) internal successors, (1058), 714 states have internal predecessors, (1058), 248 states have call successors, (248), 36 states have call predecessors, (248), 33 states have return successors, (245), 242 states have call predecessors, (245), 245 states have call successors, (245) [2021-11-23 02:26:25,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1551 transitions. [2021-11-23 02:26:25,586 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1551 transitions. Word has length 112 [2021-11-23 02:26:25,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:25,586 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 1551 transitions. [2021-11-23 02:26:25,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:26:25,587 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1551 transitions. [2021-11-23 02:26:25,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 02:26:25,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:25,594 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:25,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:26:25,594 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:25,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:25,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1867019732, now seen corresponding path program 1 times [2021-11-23 02:26:25,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:25,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159362446] [2021-11-23 02:26:25,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:25,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-23 02:26:26,237 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:26,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159362446] [2021-11-23 02:26:26,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159362446] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:26:26,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011102243] [2021-11-23 02:26:26,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:26,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:26:26,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:26:26,240 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:26:26,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8870f60e-1195-4c37-affd-6b9f40a207f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:26:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:26,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 125 conjunts are in the unsatisfiable core [2021-11-23 02:26:26,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:26:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:26:28,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:26:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-23 02:26:33,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011102243] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:26:33,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1373385926] [2021-11-23 02:26:33,884 INFO L159 IcfgInterpreter]: Started Sifa with 98 locations of interest [2021-11-23 02:26:33,884 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:26:33,885 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:26:33,885 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:26:33,886 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:26:59,651 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:26:59,938 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 483 for LOIs [2021-11-23 02:27:02,094 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 235 for LOIs [2021-11-23 02:27:02,143 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:27:02,426 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 267 for LOIs [2021-11-23 02:27:06,037 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 279 for LOIs [2021-11-23 02:27:27,780 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 428 for LOIs [2021-11-23 02:27:27,873 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 431 for LOIs [2021-11-23 02:27:28,130 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 450 for LOIs [2021-11-23 02:27:28,756 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 249 for LOIs [2021-11-23 02:27:28,807 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2021-11-23 02:27:28,858 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 481 for LOIs [2021-11-23 02:27:30,559 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 251 for LOIs [2021-11-23 02:27:30,613 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 254 for LOIs [2021-11-23 02:27:30,672 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:28:25,785 WARN L227 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 512 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)