./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product34.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_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/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_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/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_4099dc66-175e-422e-ba1c-eac6adf9bbad/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 4c8df6e468eecbce541189806946dc0233fe629a6f2a971a54d2c5d7914e97b3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:01:31,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:01:31,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:01:31,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:01:31,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:01:31,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:01:31,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:01:31,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:01:31,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:01:31,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:01:31,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:01:31,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:01:31,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:01:31,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:01:31,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:01:31,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:01:31,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:01:31,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:01:31,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:01:31,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:01:31,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:01:31,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:01:31,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:01:31,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:01:31,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:01:31,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:01:31,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:01:31,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:01:31,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:01:31,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:01:31,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:01:31,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:01:31,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:01:31,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:01:31,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:01:31,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:01:31,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:01:31,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:01:31,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:01:31,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:01:31,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:01:31,920 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:01:31,969 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:01:31,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:01:31,970 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:01:31,970 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:01:31,971 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:01:31,971 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:01:31,971 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:01:31,972 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:01:31,972 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:01:31,972 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:01:31,972 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:01:31,973 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:01:31,973 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:01:31,973 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:01:31,973 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:01:31,974 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:01:31,974 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:01:31,974 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:01:31,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:01:31,976 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:01:31,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:01:31,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:01:31,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:01:31,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:01:31,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:01:31,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:01:31,978 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:01:31,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:01:31,978 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:01:31,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:01:31,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:01:31,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:01:31,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:01:31,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:01:31,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:01:31,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:01:31,980 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:01:31,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:01:31,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:01:31,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:01:31,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:01:31,982 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_4099dc66-175e-422e-ba1c-eac6adf9bbad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8df6e468eecbce541189806946dc0233fe629a6f2a971a54d2c5d7914e97b3 [2021-11-23 02:01:32,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:01:32,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:01:32,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:01:32,275 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:01:32,276 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:01:32,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec6_product34.cil.c [2021-11-23 02:01:32,357 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/data/a40a4ea43/7671845714f74ed0a636891fe9762898/FLAGda4a7eb3c [2021-11-23 02:01:33,073 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:01:33,078 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/sv-benchmarks/c/product-lines/email_spec6_product34.cil.c [2021-11-23 02:01:33,125 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/data/a40a4ea43/7671845714f74ed0a636891fe9762898/FLAGda4a7eb3c [2021-11-23 02:01:33,260 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/data/a40a4ea43/7671845714f74ed0a636891fe9762898 [2021-11-23 02:01:33,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:01:33,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:01:33,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:01:33,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:01:33,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:01:33,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:01:33" (1/1) ... [2021-11-23 02:01:33,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f69727f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:33, skipping insertion in model container [2021-11-23 02:01:33,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:01:33" (1/1) ... [2021-11-23 02:01:33,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:01:33,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:01:33,786 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_4099dc66-175e-422e-ba1c-eac6adf9bbad/sv-benchmarks/c/product-lines/email_spec6_product34.cil.c[11485,11498] [2021-11-23 02:01:34,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:01:34,217 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:01:34,271 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_4099dc66-175e-422e-ba1c-eac6adf9bbad/sv-benchmarks/c/product-lines/email_spec6_product34.cil.c[11485,11498] [2021-11-23 02:01:34,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:01:34,413 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:01:34,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:34 WrapperNode [2021-11-23 02:01:34,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:01:34,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:01:34,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:01:34,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:01:34,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:34" (1/1) ... [2021-11-23 02:01:34,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:34" (1/1) ... [2021-11-23 02:01:34,522 INFO L137 Inliner]: procedures = 135, calls = 244, calls flagged for inlining = 63, calls inlined = 60, statements flattened = 1123 [2021-11-23 02:01:34,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:01:34,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:01:34,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:01:34,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:01:34,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:34" (1/1) ... [2021-11-23 02:01:34,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:34" (1/1) ... [2021-11-23 02:01:34,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:34" (1/1) ... [2021-11-23 02:01:34,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:34" (1/1) ... [2021-11-23 02:01:34,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:34" (1/1) ... [2021-11-23 02:01:34,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:34" (1/1) ... [2021-11-23 02:01:34,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:34" (1/1) ... [2021-11-23 02:01:34,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:01:34,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:01:34,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:01:34,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:01:34,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:34" (1/1) ... [2021-11-23 02:01:34,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:01:34,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:01:34,675 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:01:34,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:01:34,721 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 02:01:34,721 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 02:01:34,721 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 02:01:34,721 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 02:01:34,722 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 02:01:34,722 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 02:01:34,722 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 02:01:34,722 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 02:01:34,722 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 02:01:34,723 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 02:01:34,723 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:01:34,723 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:01:34,723 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:01:34,723 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:01:34,723 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:01:34,724 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:01:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:01:34,724 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:01:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 02:01:34,724 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 02:01:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 02:01:34,725 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 02:01:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:01:34,725 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:01:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:01:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:01:34,726 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:01:34,726 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:01:34,727 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:01:34,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:01:34,727 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 02:01:34,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 02:01:34,727 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 02:01:34,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 02:01:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 02:01:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 02:01:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:01:34,729 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:01:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:01:34,729 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:01:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:01:34,729 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:01:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 02:01:34,730 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 02:01:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2021-11-23 02:01:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2021-11-23 02:01:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:01:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:01:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 02:01:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 02:01:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:01:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:01:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:01:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:01:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:01:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:01:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:01:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 02:01:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 02:01:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:01:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:01:35,032 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:01:35,035 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:01:36,034 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:01:36,552 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:01:36,552 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:01:36,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:01:36 BoogieIcfgContainer [2021-11-23 02:01:36,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:01:36,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:01:36,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:01:36,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:01:36,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:01:33" (1/3) ... [2021-11-23 02:01:36,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1341af89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:01:36, skipping insertion in model container [2021-11-23 02:01:36,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:34" (2/3) ... [2021-11-23 02:01:36,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1341af89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:01:36, skipping insertion in model container [2021-11-23 02:01:36,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:01:36" (3/3) ... [2021-11-23 02:01:36,566 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec6_product34.cil.c [2021-11-23 02:01:36,575 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:01:36,575 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:01:36,627 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:01:36,634 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 02:01:36,634 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:01:36,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 235 states, 132 states have (on average 1.2878787878787878) internal successors, (170), 137 states have internal predecessors, (170), 73 states have call successors, (73), 28 states have call predecessors, (73), 28 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-23 02:01:36,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 02:01:36,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:01:36,677 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 02:01:36,678 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:01:36,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:01:36,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1254057680, now seen corresponding path program 1 times [2021-11-23 02:01:36,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:01:36,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023001526] [2021-11-23 02:01:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:01:36,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:01:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:01:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:01:37,080 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:01:37,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023001526] [2021-11-23 02:01:37,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023001526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:01:37,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:01:37,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:01:37,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38371950] [2021-11-23 02:01:37,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:01:37,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:01:37,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:01:37,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:01:37,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:01:37,136 INFO L87 Difference]: Start difference. First operand has 235 states, 132 states have (on average 1.2878787878787878) internal successors, (170), 137 states have internal predecessors, (170), 73 states have call successors, (73), 28 states have call predecessors, (73), 28 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:01:37,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:01:37,385 INFO L93 Difference]: Finished difference Result 378 states and 503 transitions. [2021-11-23 02:01:37,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:01:37,389 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 87 [2021-11-23 02:01:37,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:01:37,410 INFO L225 Difference]: With dead ends: 378 [2021-11-23 02:01:37,410 INFO L226 Difference]: Without dead ends: 232 [2021-11-23 02:01:37,421 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 02:01:37,426 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:01:37,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 268 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:01:37,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-23 02:01:37,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-11-23 02:01:37,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 130 states have (on average 1.2615384615384615) internal successors, (164), 134 states have internal predecessors, (164), 73 states have call successors, (73), 28 states have call predecessors, (73), 28 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-23 02:01:37,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 309 transitions. [2021-11-23 02:01:37,504 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 309 transitions. Word has length 87 [2021-11-23 02:01:37,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:01:37,508 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 309 transitions. [2021-11-23 02:01:37,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:01:37,509 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 309 transitions. [2021-11-23 02:01:37,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-23 02:01:37,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:01:37,525 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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 02:01:37,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:01:37,526 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:01:37,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:01:37,531 INFO L85 PathProgramCache]: Analyzing trace with hash 803080450, now seen corresponding path program 1 times [2021-11-23 02:01:37,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:01:37,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830129225] [2021-11-23 02:01:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:01:37,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:01:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:01:37,736 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:01:37,736 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:01:37,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830129225] [2021-11-23 02:01:37,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830129225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:01:37,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:01:37,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:01:37,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825260379] [2021-11-23 02:01:37,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:01:37,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:01:37,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:01:37,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:01:37,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:01:37,747 INFO L87 Difference]: Start difference. First operand 232 states and 309 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:01:37,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:01:37,984 INFO L93 Difference]: Finished difference Result 374 states and 488 transitions. [2021-11-23 02:01:37,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:01:37,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 99 [2021-11-23 02:01:37,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:01:37,993 INFO L225 Difference]: With dead ends: 374 [2021-11-23 02:01:37,993 INFO L226 Difference]: Without dead ends: 234 [2021-11-23 02:01:37,999 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 02:01:38,000 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 0 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:01:38,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 529 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:01:38,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-23 02:01:38,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-11-23 02:01:38,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 132 states have (on average 1.2575757575757576) internal successors, (166), 136 states have internal predecessors, (166), 73 states have call successors, (73), 28 states have call predecessors, (73), 28 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-23 02:01:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 311 transitions. [2021-11-23 02:01:38,060 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 311 transitions. Word has length 99 [2021-11-23 02:01:38,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:01:38,062 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 311 transitions. [2021-11-23 02:01:38,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:01:38,063 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 311 transitions. [2021-11-23 02:01:38,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-23 02:01:38,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:01:38,068 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, 1, 1] [2021-11-23 02:01:38,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:01:38,068 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:01:38,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:01:38,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1477782135, now seen corresponding path program 1 times [2021-11-23 02:01:38,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:01:38,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161947094] [2021-11-23 02:01:38,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:01:38,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:01:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:01:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:01:38,246 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:01:38,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161947094] [2021-11-23 02:01:38,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161947094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:01:38,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:01:38,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:01:38,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202073470] [2021-11-23 02:01:38,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:01:38,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:01:38,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:01:38,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:01:38,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:01:38,252 INFO L87 Difference]: Start difference. First operand 234 states and 311 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:01:38,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:01:38,411 INFO L93 Difference]: Finished difference Result 503 states and 689 transitions. [2021-11-23 02:01:38,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:01:38,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 104 [2021-11-23 02:01:38,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:01:38,418 INFO L225 Difference]: With dead ends: 503 [2021-11-23 02:01:38,418 INFO L226 Difference]: Without dead ends: 287 [2021-11-23 02:01:38,420 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 02:01:38,427 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 59 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:01:38,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 545 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:01:38,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-23 02:01:38,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 282. [2021-11-23 02:01:38,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 166 states have (on average 1.3313253012048192) internal successors, (221), 170 states have internal predecessors, (221), 87 states have call successors, (87), 28 states have call predecessors, (87), 28 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2021-11-23 02:01:38,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 394 transitions. [2021-11-23 02:01:38,467 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 394 transitions. Word has length 104 [2021-11-23 02:01:38,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:01:38,468 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 394 transitions. [2021-11-23 02:01:38,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:01:38,469 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 394 transitions. [2021-11-23 02:01:38,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-23 02:01:38,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:01:38,478 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] [2021-11-23 02:01:38,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:01:38,480 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:01:38,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:01:38,481 INFO L85 PathProgramCache]: Analyzing trace with hash 755610130, now seen corresponding path program 1 times [2021-11-23 02:01:38,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:01:38,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694669081] [2021-11-23 02:01:38,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:01:38,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:01:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:01:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:01:38,593 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:01:38,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694669081] [2021-11-23 02:01:38,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694669081] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:01:38,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128391411] [2021-11-23 02:01:38,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:01:38,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:01:38,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:01:38,598 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:01:38,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:01:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:01:38,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:01:38,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:01:39,231 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:01:39,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:01:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:01:39,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128391411] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:01:39,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1766582639] [2021-11-23 02:01:39,486 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2021-11-23 02:01:39,486 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:01:39,493 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:01:39,498 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:01:39,498 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:02:04,497 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:02:04,779 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:02:05,051 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:02:58,564 WARN L227 SmtUtils]: Spent 12.98s on a formula simplification. DAG size of input: 577 DAG size of output: 388 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:03:07,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1766582639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:03:07,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:03:07,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2021-11-23 02:03:07,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206299325] [2021-11-23 02:03:07,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:03:07,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 02:03:07,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:03:07,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 02:03:07,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:03:07,238 INFO L87 Difference]: Start difference. First operand 282 states and 394 transitions. Second operand has 21 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2021-11-23 02:03:20,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:03:20,025 INFO L93 Difference]: Finished difference Result 612 states and 889 transitions. [2021-11-23 02:03:20,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 02:03:20,026 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 94 [2021-11-23 02:03:20,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:03:20,032 INFO L225 Difference]: With dead ends: 612 [2021-11-23 02:03:20,033 INFO L226 Difference]: Without dead ends: 348 [2021-11-23 02:03:20,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 258 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 68.3s TimeCoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2021-11-23 02:03:20,038 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 120 mSDsluCounter, 4203 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 4338 SdHoareTripleChecker+Invalid, 2271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:03:20,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 4338 Invalid, 2271 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 2253 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-23 02:03:20,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-11-23 02:03:20,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 305. [2021-11-23 02:03:20,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 188 states have (on average 1.351063829787234) internal successors, (254), 192 states have internal predecessors, (254), 87 states have call successors, (87), 29 states have call predecessors, (87), 29 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2021-11-23 02:03:20,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 427 transitions. [2021-11-23 02:03:20,133 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 427 transitions. Word has length 94 [2021-11-23 02:03:20,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:03:20,135 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 427 transitions. [2021-11-23 02:03:20,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2021-11-23 02:03:20,136 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 427 transitions. [2021-11-23 02:03:20,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-23 02:03:20,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:03:20,138 INFO L514 BasicCegarLoop]: trace histogram [4, 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 02:03:20,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:03:20,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:03:20,360 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:03:20,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:03:20,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1677630821, now seen corresponding path program 1 times [2021-11-23 02:03:20,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:03:20,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842752378] [2021-11-23 02:03:20,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:03:20,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:03:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:03:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:03:20,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:03:20,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842752378] [2021-11-23 02:03:20,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842752378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:03:20,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:03:20,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:03:20,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815263718] [2021-11-23 02:03:20,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:03:20,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:03:20,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:03:20,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:03:20,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:03:20,450 INFO L87 Difference]: Start difference. First operand 305 states and 427 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 02:03:20,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:03:20,658 INFO L93 Difference]: Finished difference Result 713 states and 1034 transitions. [2021-11-23 02:03:20,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:03:20,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 99 [2021-11-23 02:03:20,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:03:20,663 INFO L225 Difference]: With dead ends: 713 [2021-11-23 02:03:20,663 INFO L226 Difference]: Without dead ends: 432 [2021-11-23 02:03:20,665 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 02:03:20,669 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 57 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:03:20,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 557 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:03:20,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-11-23 02:03:20,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 427. [2021-11-23 02:03:20,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 279 states have (on average 1.4121863799283154) internal successors, (394), 283 states have internal predecessors, (394), 118 states have call successors, (118), 29 states have call predecessors, (118), 29 states have return successors, (117), 116 states have call predecessors, (117), 117 states have call successors, (117) [2021-11-23 02:03:20,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 629 transitions. [2021-11-23 02:03:20,783 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 629 transitions. Word has length 99 [2021-11-23 02:03:20,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:03:20,784 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 629 transitions. [2021-11-23 02:03:20,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 02:03:20,784 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 629 transitions. [2021-11-23 02:03:20,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 02:03:20,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:03:20,789 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-23 02:03:20,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:03:20,789 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:03:20,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:03:20,790 INFO L85 PathProgramCache]: Analyzing trace with hash 960170417, now seen corresponding path program 1 times [2021-11-23 02:03:20,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:03:20,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635593063] [2021-11-23 02:03:20,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:03:20,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:03:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:03:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-23 02:03:20,921 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:03:20,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635593063] [2021-11-23 02:03:20,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635593063] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:03:20,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048683928] [2021-11-23 02:03:20,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:03:20,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:03:20,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:03:20,923 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:03:20,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:03:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:03:21,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:03:21,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:03:21,463 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-23 02:03:21,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:03:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-23 02:03:21,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048683928] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:03:21,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [811151880] [2021-11-23 02:03:21,691 INFO L159 IcfgInterpreter]: Started Sifa with 90 locations of interest [2021-11-23 02:03:21,691 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:03:21,692 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:03:21,693 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:03:21,693 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:03:57,570 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:03:57,828 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 266 for LOIs [2021-11-23 02:03:59,776 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:04:00,036 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 268 for LOIs [2021-11-23 02:04:03,276 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 226 for LOIs [2021-11-23 02:04:03,319 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 234 for LOIs [2021-11-23 02:04:03,360 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2021-11-23 02:04:03,402 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 251 for LOIs [2021-11-23 02:04:03,455 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:04:55,972 WARN L227 SmtUtils]: Spent 9.25s on a formula simplification. DAG size of input: 587 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:05:06,711 WARN L227 SmtUtils]: Spent 9.36s on a formula simplification. DAG size of input: 589 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:05:26,087 WARN L227 SmtUtils]: Spent 18.14s on a formula simplification. DAG size of input: 588 DAG size of output: 461 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:05:32,526 WARN L227 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 573 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:06:02,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [811151880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:06:02,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:06:02,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [4, 4, 4] total 50 [2021-11-23 02:06:02,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35597726] [2021-11-23 02:06:02,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:06:02,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-23 02:06:02,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:06:02,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-23 02:06:02,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=2326, Unknown=0, NotChecked=0, Total=2450 [2021-11-23 02:06:02,805 INFO L87 Difference]: Start difference. First operand 427 states and 629 transitions. Second operand has 45 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 28 states have internal predecessors, (53), 14 states have call successors, (25), 9 states have call predecessors, (25), 7 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2021-11-23 02:06:28,023 WARN L227 SmtUtils]: Spent 16.40s on a formula simplification. DAG size of input: 543 DAG size of output: 448 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:06:45,371 WARN L227 SmtUtils]: Spent 16.79s on a formula simplification. DAG size of input: 591 DAG size of output: 440 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:07:14,079 WARN L227 SmtUtils]: Spent 8.57s on a formula simplification. DAG size of input: 599 DAG size of output: 432 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:07:33,825 WARN L227 SmtUtils]: Spent 15.77s on a formula simplification. DAG size of input: 590 DAG size of output: 441 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:08:00,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:00,846 INFO L93 Difference]: Finished difference Result 931 states and 1415 transitions. [2021-11-23 02:08:00,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-23 02:08:00,850 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 28 states have internal predecessors, (53), 14 states have call successors, (25), 9 states have call predecessors, (25), 7 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) Word has length 111 [2021-11-23 02:08:00,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:00,855 INFO L225 Difference]: With dead ends: 931 [2021-11-23 02:08:00,855 INFO L226 Difference]: Without dead ends: 567 [2021-11-23 02:08:00,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 218.5s TimeCoverageRelationStatistics Valid=255, Invalid=4301, Unknown=0, NotChecked=0, Total=4556 [2021-11-23 02:08:00,860 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 285 mSDsluCounter, 6879 mSDsCounter, 0 mSdLazyCounter, 6790 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 6922 SdHoareTripleChecker+Invalid, 6850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 6790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:00,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 6922 Invalid, 6850 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [60 Valid, 6790 Invalid, 0 Unknown, 0 Unchecked, 18.4s Time] [2021-11-23 02:08:00,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-11-23 02:08:01,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 466. [2021-11-23 02:08:01,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 304 states have (on average 1.4046052631578947) internal successors, (427), 310 states have internal predecessors, (427), 127 states have call successors, (127), 36 states have call predecessors, (127), 34 states have return successors, (126), 121 states have call predecessors, (126), 126 states have call successors, (126) [2021-11-23 02:08:01,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 680 transitions. [2021-11-23 02:08:01,030 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 680 transitions. Word has length 111 [2021-11-23 02:08:01,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:01,030 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 680 transitions. [2021-11-23 02:08:01,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 28 states have internal predecessors, (53), 14 states have call successors, (25), 9 states have call predecessors, (25), 7 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2021-11-23 02:08:01,031 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 680 transitions. [2021-11-23 02:08:01,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-23 02:08:01,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:01,034 INFO L514 BasicCegarLoop]: trace histogram [4, 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 02:08:01,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:08:01,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:01,258 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:08:01,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:01,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1065287996, now seen corresponding path program 1 times [2021-11-23 02:08:01,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:01,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044145655] [2021-11-23 02:08:01,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:01,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:01,333 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:08:01,334 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:01,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044145655] [2021-11-23 02:08:01,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044145655] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:08:01,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545605632] [2021-11-23 02:08:01,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:01,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:01,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:08:01,340 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:08:01,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4099dc66-175e-422e-ba1c-eac6adf9bbad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:08:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:01,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:08:01,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:08:01,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:08:02,015 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:08:02,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545605632] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:08:02,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [898870386] [2021-11-23 02:08:02,025 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2021-11-23 02:08:02,026 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:08:02,028 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:08:02,028 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:08:02,029 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:08:36,837 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:08:37,118 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 266 for LOIs [2021-11-23 02:08:38,957 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2021-11-23 02:08:38,999 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:08:39,258 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 266 for LOIs [2021-11-23 02:08:42,419 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 276 for LOIs [2021-11-23 02:08:54,054 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 224 for LOIs [2021-11-23 02:08:54,096 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 424 for LOIs [2021-11-23 02:08:54,216 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 244 for LOIs [2021-11-23 02:08:54,262 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2021-11-23 02:08:55,843 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 248 for LOIs [2021-11-23 02:08:55,890 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 251 for LOIs [2021-11-23 02:08:55,943 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:09:53,356 WARN L227 SmtUtils]: Spent 9.64s on a formula simplification. DAG size of input: 587 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:10:04,853 WARN L227 SmtUtils]: Spent 9.77s on a formula simplification. DAG size of input: 589 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:10:25,451 WARN L227 SmtUtils]: Spent 19.08s on a formula simplification. DAG size of input: 588 DAG size of output: 461 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:10:31,931 WARN L227 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 573 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:10:52,095 WARN L227 SmtUtils]: Spent 11.53s on a formula simplification. DAG size of input: 476 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:03,596 WARN L227 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 543 DAG size of output: 402 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:14,969 WARN L227 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 551 DAG size of output: 401 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:21,637 WARN L227 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 576 DAG size of output: 426 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:21,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [898870386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:21,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:12:21,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [4, 4, 4] total 69 [2021-11-23 02:12:21,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086997494] [2021-11-23 02:12:21,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:21,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-23 02:12:21,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:21,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-23 02:12:21,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=4517, Unknown=0, NotChecked=0, Total=4692 [2021-11-23 02:12:21,643 INFO L87 Difference]: Start difference. First operand 466 states and 680 transitions. Second operand has 64 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 38 states have internal predecessors, (50), 20 states have call successors, (22), 13 states have call predecessors, (22), 10 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2021-11-23 02:12:47,770 WARN L227 SmtUtils]: Spent 16.93s on a formula simplification. DAG size of input: 543 DAG size of output: 448 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:13:05,651 WARN L227 SmtUtils]: Spent 17.13s on a formula simplification. DAG size of input: 591 DAG size of output: 440 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)