./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product31.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_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/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_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/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_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/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 28cb2c1915c61c386f3394fd53d16960f7cb856128220666f501d4f4a00b7894 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:12:12,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:12:12,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:12:12,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:12:12,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:12:12,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:12:12,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:12:12,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:12:12,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:12:12,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:12:12,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:12:12,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:12:12,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:12:12,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:12:12,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:12:12,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:12:12,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:12:12,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:12:12,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:12:12,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:12:12,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:12:12,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:12:12,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:12:12,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:12:12,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:12:12,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:12:12,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:12:12,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:12:12,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:12:12,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:12:12,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:12:12,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:12:12,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:12:12,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:12:12,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:12:12,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:12:12,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:12:12,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:12:12,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:12:12,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:12:12,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:12:12,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:12:12,641 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:12:12,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:12:12,646 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:12:12,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:12:12,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:12:12,651 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:12:12,652 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:12:12,652 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:12:12,652 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:12:12,652 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:12:12,654 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:12:12,654 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:12:12,654 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:12:12,654 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:12:12,655 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:12:12,655 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:12:12,655 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:12:12,655 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:12:12,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:12:12,657 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:12:12,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:12:12,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:12:12,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:12:12,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:12:12,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:12:12,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:12:12,659 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:12:12,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:12:12,660 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:12:12,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:12:12,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:12:12,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:12:12,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:12:12,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:12:12,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:12:12,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:12:12,662 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:12:12,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:12:12,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:12:12,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:12:12,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:12:12,664 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_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28cb2c1915c61c386f3394fd53d16960f7cb856128220666f501d4f4a00b7894 [2021-11-23 02:12:12,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:12:12,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:12:12,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:12:12,997 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:12:12,997 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:12:12,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec9_product31.cil.c [2021-11-23 02:12:13,075 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/data/da310f50f/368b08e8454b4d9385534ce713bd981a/FLAG87c565d4e [2021-11-23 02:12:13,677 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:12:13,678 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/sv-benchmarks/c/product-lines/email_spec9_product31.cil.c [2021-11-23 02:12:13,711 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/data/da310f50f/368b08e8454b4d9385534ce713bd981a/FLAG87c565d4e [2021-11-23 02:12:13,904 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/data/da310f50f/368b08e8454b4d9385534ce713bd981a [2021-11-23 02:12:13,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:12:13,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:12:13,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:12:13,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:12:13,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:12:13,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:12:13" (1/1) ... [2021-11-23 02:12:13,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e0b49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:13, skipping insertion in model container [2021-11-23 02:12:13,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:12:13" (1/1) ... [2021-11-23 02:12:13,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:12:14,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:12:14,734 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_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/sv-benchmarks/c/product-lines/email_spec9_product31.cil.c[56976,56989] [2021-11-23 02:12:14,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:12:14,828 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:12:14,960 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_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/sv-benchmarks/c/product-lines/email_spec9_product31.cil.c[56976,56989] [2021-11-23 02:12:14,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:12:15,031 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:12:15,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:15 WrapperNode [2021-11-23 02:12:15,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:12:15,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:12:15,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:12:15,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:12:15,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:15" (1/1) ... [2021-11-23 02:12:15,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:15" (1/1) ... [2021-11-23 02:12:15,169 INFO L137 Inliner]: procedures = 132, calls = 223, calls flagged for inlining = 62, calls inlined = 57, statements flattened = 1032 [2021-11-23 02:12:15,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:12:15,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:12:15,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:12:15,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:12:15,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:15" (1/1) ... [2021-11-23 02:12:15,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:15" (1/1) ... [2021-11-23 02:12:15,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:15" (1/1) ... [2021-11-23 02:12:15,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:15" (1/1) ... [2021-11-23 02:12:15,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:15" (1/1) ... [2021-11-23 02:12:15,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:15" (1/1) ... [2021-11-23 02:12:15,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:15" (1/1) ... [2021-11-23 02:12:15,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:12:15,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:12:15,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:12:15,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:12:15,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:15" (1/1) ... [2021-11-23 02:12:15,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:12:15,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:12:15,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:12:15,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:12:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 02:12:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 02:12:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 02:12:15,429 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 02:12:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 02:12:15,429 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 02:12:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:12:15,429 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:12:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:12:15,430 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:12:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:12:15,430 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:12:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:12:15,431 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:12:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 02:12:15,431 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 02:12:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 02:12:15,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 02:12:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:12:15,432 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:12:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:12:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:12:15,432 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:12:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:12:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:12:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:12:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 02:12:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 02:12:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 02:12:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 02:12:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:12:15,434 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:12:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:12:15,434 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:12:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:12:15,434 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:12:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 02:12:15,435 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 02:12:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:12:15,435 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:12:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 02:12:15,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 02:12:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:12:15,436 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:12:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:12:15,437 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:12:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:12:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:12:15,439 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:12:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:12:15,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:12:15,855 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:12:15,873 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:12:16,909 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:12:17,397 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:12:17,397 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:12:17,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:12:17 BoogieIcfgContainer [2021-11-23 02:12:17,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:12:17,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:12:17,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:12:17,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:12:17,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:12:13" (1/3) ... [2021-11-23 02:12:17,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f55d9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:12:17, skipping insertion in model container [2021-11-23 02:12:17,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:15" (2/3) ... [2021-11-23 02:12:17,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f55d9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:12:17, skipping insertion in model container [2021-11-23 02:12:17,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:12:17" (3/3) ... [2021-11-23 02:12:17,414 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_product31.cil.c [2021-11-23 02:12:17,424 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:12:17,424 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:12:17,498 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:12:17,507 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 02:12:17,507 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:12:17,543 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 117 states have (on average 1.3162393162393162) internal successors, (154), 121 states have internal predecessors, (154), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2021-11-23 02:12:17,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 02:12:17,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:17,554 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 02:12:17,555 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:17,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:17,560 INFO L85 PathProgramCache]: Analyzing trace with hash -2060767377, now seen corresponding path program 1 times [2021-11-23 02:12:17,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:17,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536463] [2021-11-23 02:12:17,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:17,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:12:18,031 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:18,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536463] [2021-11-23 02:12:18,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:18,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:18,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:12:18,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567154382] [2021-11-23 02:12:18,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:18,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:12:18,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:18,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:12:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:12:18,130 INFO L87 Difference]: Start difference. First operand has 201 states, 117 states have (on average 1.3162393162393162) internal successors, (154), 121 states have internal predecessors, (154), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:12:18,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:18,364 INFO L93 Difference]: Finished difference Result 319 states and 422 transitions. [2021-11-23 02:12:18,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:12:18,368 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 64 [2021-11-23 02:12:18,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:18,392 INFO L225 Difference]: With dead ends: 319 [2021-11-23 02:12:18,392 INFO L226 Difference]: Without dead ends: 198 [2021-11-23 02:12:18,406 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 02:12:18,412 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:18,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 231 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:12:18,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-23 02:12:18,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-11-23 02:12:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 115 states have (on average 1.2869565217391303) internal successors, (148), 118 states have internal predecessors, (148), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-23 02:12:18,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 265 transitions. [2021-11-23 02:12:18,508 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 265 transitions. Word has length 64 [2021-11-23 02:12:18,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:18,514 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 265 transitions. [2021-11-23 02:12:18,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:12:18,515 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 265 transitions. [2021-11-23 02:12:18,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 02:12:18,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:18,535 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 02:12:18,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:12:18,536 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:18,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:18,542 INFO L85 PathProgramCache]: Analyzing trace with hash -143574967, now seen corresponding path program 1 times [2021-11-23 02:12:18,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:18,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894693136] [2021-11-23 02:12:18,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:18,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:12:18,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:18,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894693136] [2021-11-23 02:12:18,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894693136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:18,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:18,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:12:18,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953776525] [2021-11-23 02:12:18,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:18,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:12:18,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:18,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:12:18,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:18,727 INFO L87 Difference]: Start difference. First operand 198 states and 265 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:12:18,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:18,927 INFO L93 Difference]: Finished difference Result 315 states and 410 transitions. [2021-11-23 02:12:18,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:12:18,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2021-11-23 02:12:18,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:18,940 INFO L225 Difference]: With dead ends: 315 [2021-11-23 02:12:18,941 INFO L226 Difference]: Without dead ends: 200 [2021-11-23 02:12:18,948 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 02:12:18,951 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 0 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:18,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 455 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:12:18,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-23 02:12:19,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-11-23 02:12:19,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 117 states have (on average 1.2820512820512822) internal successors, (150), 120 states have internal predecessors, (150), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-23 02:12:19,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 267 transitions. [2021-11-23 02:12:19,020 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 267 transitions. Word has length 65 [2021-11-23 02:12:19,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:19,023 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 267 transitions. [2021-11-23 02:12:19,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:12:19,024 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 267 transitions. [2021-11-23 02:12:19,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 02:12:19,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:19,032 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 02:12:19,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:12:19,033 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:19,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:19,035 INFO L85 PathProgramCache]: Analyzing trace with hash 637185191, now seen corresponding path program 1 times [2021-11-23 02:12:19,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:19,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706906545] [2021-11-23 02:12:19,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:19,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:12:19,229 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:19,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706906545] [2021-11-23 02:12:19,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706906545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:19,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:19,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:12:19,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139678789] [2021-11-23 02:12:19,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:19,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:12:19,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:19,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:12:19,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:19,238 INFO L87 Difference]: Start difference. First operand 200 states and 267 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:12:19,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:19,411 INFO L93 Difference]: Finished difference Result 430 states and 593 transitions. [2021-11-23 02:12:19,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:12:19,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2021-11-23 02:12:19,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:19,439 INFO L225 Difference]: With dead ends: 430 [2021-11-23 02:12:19,440 INFO L226 Difference]: Without dead ends: 248 [2021-11-23 02:12:19,441 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 02:12:19,443 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 57 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:19,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 466 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:12:19,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-23 02:12:19,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 243. [2021-11-23 02:12:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 149 states have (on average 1.3624161073825503) internal successors, (203), 152 states have internal predecessors, (203), 70 states have call successors, (70), 23 states have call predecessors, (70), 23 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2021-11-23 02:12:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 342 transitions. [2021-11-23 02:12:19,477 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 342 transitions. Word has length 70 [2021-11-23 02:12:19,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:19,477 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 342 transitions. [2021-11-23 02:12:19,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:12:19,478 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 342 transitions. [2021-11-23 02:12:19,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 02:12:19,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:19,481 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 02:12:19,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:12:19,481 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:19,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:19,482 INFO L85 PathProgramCache]: Analyzing trace with hash -787712482, now seen corresponding path program 1 times [2021-11-23 02:12:19,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:19,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128312939] [2021-11-23 02:12:19,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:19,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:19,577 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:12:19,577 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:19,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128312939] [2021-11-23 02:12:19,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128312939] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:12:19,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072519031] [2021-11-23 02:12:19,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:19,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:12:19,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:12:19,581 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:12:19,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:12:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:19,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:12:19,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:12:20,210 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:12:20,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:12:20,442 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:12:20,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072519031] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:12:20,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [51112620] [2021-11-23 02:12:20,474 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-23 02:12:20,475 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:12:20,481 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:12:20,492 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:12:20,495 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:12:53,897 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:12:54,232 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2021-11-23 02:12:54,560 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 486 for LOIs [2021-11-23 02:13:23,593 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 454 for LOIs [2021-11-23 02:13:23,836 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 484 for LOIs [2021-11-23 02:13:41,896 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 442 for LOIs [2021-11-23 02:13:42,140 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2021-11-23 02:13:42,215 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 254 for LOIs [2021-11-23 02:13:42,265 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 457 for LOIs [2021-11-23 02:13:42,782 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:14:04,952 WARN L227 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:14:10,538 WARN L227 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 472 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:14:48,318 WARN L227 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 569 DAG size of output: 367 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:14:53,909 WARN L227 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 565 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:14:59,578 WARN L227 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 571 DAG size of output: 369 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:16:28,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [51112620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:28,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:28,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2021-11-23 02:16:28,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791538067] [2021-11-23 02:16:28,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:28,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-23 02:16:28,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:28,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-23 02:16:28,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2711, Unknown=0, NotChecked=0, Total=2862 [2021-11-23 02:16:28,353 INFO L87 Difference]: Start difference. First operand 243 states and 342 transitions. Second operand has 49 states, 32 states have (on average 1.15625) internal successors, (37), 30 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 02:17:10,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:10,226 INFO L93 Difference]: Finished difference Result 600 states and 892 transitions. [2021-11-23 02:17:10,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-23 02:17:10,227 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 32 states have (on average 1.15625) internal successors, (37), 30 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 71 [2021-11-23 02:17:10,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:10,231 INFO L225 Difference]: With dead ends: 600 [2021-11-23 02:17:10,231 INFO L226 Difference]: Without dead ends: 375 [2021-11-23 02:17:10,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 189.9s TimeCoverageRelationStatistics Valid=219, Invalid=3687, Unknown=0, NotChecked=0, Total=3906 [2021-11-23 02:17:10,236 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 228 mSDsluCounter, 6014 mSDsCounter, 0 mSdLazyCounter, 5669 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 6116 SdHoareTripleChecker+Invalid, 5696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 5669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:10,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 6116 Invalid, 5696 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [27 Valid, 5669 Invalid, 0 Unknown, 0 Unchecked, 17.1s Time] [2021-11-23 02:17:10,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-23 02:17:10,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 321. [2021-11-23 02:17:10,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 213 states have (on average 1.4131455399061033) internal successors, (301), 216 states have internal predecessors, (301), 78 states have call successors, (78), 31 states have call predecessors, (78), 29 states have return successors, (77), 75 states have call predecessors, (77), 77 states have call successors, (77) [2021-11-23 02:17:10,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 456 transitions. [2021-11-23 02:17:10,331 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 456 transitions. Word has length 71 [2021-11-23 02:17:10,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:10,332 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 456 transitions. [2021-11-23 02:17:10,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 32 states have (on average 1.15625) internal successors, (37), 30 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 02:17:10,332 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 456 transitions. [2021-11-23 02:17:10,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 02:17:10,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:10,335 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-23 02:17:10,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 02:17:10,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:10,538 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:17:10,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:10,538 INFO L85 PathProgramCache]: Analyzing trace with hash -672915996, now seen corresponding path program 1 times [2021-11-23 02:17:10,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:10,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962275472] [2021-11-23 02:17:10,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:10,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:17:10,605 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:10,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962275472] [2021-11-23 02:17:10,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962275472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:10,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:10,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:17:10,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885924111] [2021-11-23 02:17:10,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:10,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:17:10,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:10,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:17:10,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:10,608 INFO L87 Difference]: Start difference. First operand 321 states and 456 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:17:10,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:10,861 INFO L93 Difference]: Finished difference Result 756 states and 1118 transitions. [2021-11-23 02:17:10,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:17:10,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2021-11-23 02:17:10,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:10,869 INFO L225 Difference]: With dead ends: 756 [2021-11-23 02:17:10,869 INFO L226 Difference]: Without dead ends: 461 [2021-11-23 02:17:10,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:10,872 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 55 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:10,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 482 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:17:10,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-11-23 02:17:11,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 454. [2021-11-23 02:17:11,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 321 states have (on average 1.4890965732087227) internal successors, (478), 324 states have internal predecessors, (478), 103 states have call successors, (103), 31 states have call predecessors, (103), 29 states have return successors, (102), 100 states have call predecessors, (102), 102 states have call successors, (102) [2021-11-23 02:17:11,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 683 transitions. [2021-11-23 02:17:11,008 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 683 transitions. Word has length 76 [2021-11-23 02:17:11,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:11,009 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 683 transitions. [2021-11-23 02:17:11,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:17:11,009 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 683 transitions. [2021-11-23 02:17:11,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 02:17:11,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:11,013 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-23 02:17:11,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:17:11,013 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:17:11,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:11,014 INFO L85 PathProgramCache]: Analyzing trace with hash 855113976, now seen corresponding path program 1 times [2021-11-23 02:17:11,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:11,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161011959] [2021-11-23 02:17:11,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:11,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:11,086 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:17:11,086 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:11,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161011959] [2021-11-23 02:17:11,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161011959] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:17:11,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061266415] [2021-11-23 02:17:11,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:11,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:11,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:17:11,091 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:17:11,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:17:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:11,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:17:11,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:17:11,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:17:11,847 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:17:11,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061266415] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:17:11,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1519987794] [2021-11-23 02:17:11,856 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2021-11-23 02:17:11,857 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:17:11,857 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:17:11,858 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:17:11,858 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:17:38,495 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:17:38,767 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2021-11-23 02:17:39,035 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 264 for LOIs [2021-11-23 02:17:40,876 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 232 for LOIs [2021-11-23 02:17:40,949 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 264 for LOIs [2021-11-23 02:17:59,307 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 222 for LOIs [2021-11-23 02:17:59,347 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 423 for LOIs [2021-11-23 02:17:59,466 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 250 for LOIs [2021-11-23 02:17:59,516 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2021-11-23 02:18:01,068 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:18:12,671 WARN L227 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 443 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:18,265 WARN L227 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 466 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:24,500 WARN L227 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 444 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:29,766 WARN L227 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 468 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:13,373 WARN L227 SmtUtils]: Spent 20.87s on a formula simplification. DAG size of input: 589 DAG size of output: 459 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:34,486 WARN L227 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 476 DAG size of output: 276 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:20:32,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1519987794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:20:32,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:20:32,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2021-11-23 02:20:32,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637173659] [2021-11-23 02:20:32,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:20:32,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-23 02:20:32,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:20:32,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-23 02:20:32,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=3129, Unknown=0, NotChecked=0, Total=3306 [2021-11-23 02:20:32,560 INFO L87 Difference]: Start difference. First operand 454 states and 683 transitions. Second operand has 53 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 33 states have internal predecessors, (40), 16 states have call successors, (16), 10 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 02:20:53,106 WARN L227 SmtUtils]: Spent 18.40s on a formula simplification. DAG size of input: 564 DAG size of output: 439 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:21:20,154 WARN L227 SmtUtils]: Spent 8.56s on a formula simplification. DAG size of input: 587 DAG size of output: 425 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:21:30,124 WARN L227 SmtUtils]: Spent 8.90s on a formula simplification. DAG size of input: 589 DAG size of output: 426 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:21:57,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:21:57,010 INFO L93 Difference]: Finished difference Result 913 states and 1399 transitions. [2021-11-23 02:21:57,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-23 02:21:57,010 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 33 states have internal predecessors, (40), 16 states have call successors, (16), 10 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 77 [2021-11-23 02:21:57,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:21:57,016 INFO L225 Difference]: With dead ends: 913 [2021-11-23 02:21:57,016 INFO L226 Difference]: Without dead ends: 598 [2021-11-23 02:21:57,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1181 ImplicationChecksByTransitivity, 217.6s TimeCoverageRelationStatistics Valid=308, Invalid=4948, Unknown=0, NotChecked=0, Total=5256 [2021-11-23 02:21:57,020 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 403 mSDsluCounter, 5841 mSDsCounter, 0 mSdLazyCounter, 5767 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 5915 SdHoareTripleChecker+Invalid, 5838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 5767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:21:57,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 5915 Invalid, 5838 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 5767 Invalid, 0 Unknown, 0 Unchecked, 17.8s Time] [2021-11-23 02:21:57,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-23 02:21:57,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 481. [2021-11-23 02:21:57,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 344 states have (on average 1.4912790697674418) internal successors, (513), 349 states have internal predecessors, (513), 106 states have call successors, (106), 32 states have call predecessors, (106), 30 states have return successors, (105), 101 states have call predecessors, (105), 105 states have call successors, (105) [2021-11-23 02:21:57,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 724 transitions. [2021-11-23 02:21:57,170 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 724 transitions. Word has length 77 [2021-11-23 02:21:57,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:21:57,171 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 724 transitions. [2021-11-23 02:21:57,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 33 states have internal predecessors, (40), 16 states have call successors, (16), 10 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 02:21:57,171 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 724 transitions. [2021-11-23 02:21:57,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 02:21:57,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:57,174 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 02:21:57,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:21:57,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:21:57,402 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:57,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:57,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1137407652, now seen corresponding path program 1 times [2021-11-23 02:21:57,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:21:57,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402887960] [2021-11-23 02:21:57,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:57,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:21:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:21:57,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:21:57,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402887960] [2021-11-23 02:21:57,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402887960] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:21:57,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119354463] [2021-11-23 02:21:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:57,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:21:57,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:21:57,581 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:21:57,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc2c2bb-5cb1-4e3d-93e7-059b6f19cfe8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:21:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:57,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:21:57,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:21:58,045 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:21:58,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:21:58,219 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:21:58,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119354463] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:21:58,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [824683016] [2021-11-23 02:21:58,228 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2021-11-23 02:21:58,228 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:21:58,229 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:21:58,229 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:21:58,229 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:23:19,658 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:23:19,910 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 422 for LOIs [2021-11-23 02:23:20,167 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 419 for LOIs [2021-11-23 02:23:20,433 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 242 for LOIs [2021-11-23 02:23:21,962 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 213 for LOIs [2021-11-23 02:23:22,027 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 210 for LOIs [2021-11-23 02:23:22,065 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2021-11-23 02:23:22,337 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 242 for LOIs [2021-11-23 02:23:35,608 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 200 for LOIs [2021-11-23 02:23:35,666 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 223 for LOIs [2021-11-23 02:23:35,776 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 228 for LOIs [2021-11-23 02:23:35,822 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 424 for LOIs [2021-11-23 02:23:37,221 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:23:49,594 WARN L227 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)