./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.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_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/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_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/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_602f4da1-9032-4f57-a4e6-f0cc14b6f654/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 fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:46:14,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:46:14,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:46:14,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:46:14,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:46:14,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:46:14,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:46:14,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:46:14,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:46:14,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:46:14,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:46:14,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:46:14,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:46:14,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:46:14,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:46:14,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:46:14,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:46:14,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:46:14,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:46:14,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:46:14,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:46:14,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:46:14,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:46:14,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:46:14,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:46:14,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:46:14,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:46:14,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:46:14,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:46:14,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:46:14,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:46:14,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:46:14,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:46:14,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:46:14,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:46:14,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:46:14,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:46:14,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:46:14,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:46:14,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:46:14,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:46:14,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:46:14,435 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:46:14,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:46:14,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:46:14,436 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:46:14,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:46:14,438 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:46:14,438 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:46:14,439 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:46:14,439 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:46:14,439 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:46:14,440 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:46:14,441 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:46:14,441 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:46:14,441 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:46:14,442 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:46:14,442 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:46:14,442 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:46:14,442 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:46:14,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:46:14,444 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:46:14,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:46:14,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:46:14,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:46:14,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:46:14,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:46:14,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:46:14,447 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:46:14,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:46:14,448 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:46:14,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:46:14,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:46:14,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:46:14,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:46:14,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:46:14,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:46:14,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:46:14,450 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:46:14,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:46:14,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:46:14,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:46:14,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:46:14,452 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_602f4da1-9032-4f57-a4e6-f0cc14b6f654/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 [2021-11-23 02:46:14,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:46:14,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:46:14,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:46:14,803 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:46:14,804 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:46:14,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2021-11-23 02:46:14,897 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/data/c4cc792e4/3ebf15e0820d4eb6a3b9f352bbc520a7/FLAG6964937e1 [2021-11-23 02:46:15,536 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:46:15,536 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2021-11-23 02:46:15,573 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/data/c4cc792e4/3ebf15e0820d4eb6a3b9f352bbc520a7/FLAG6964937e1 [2021-11-23 02:46:15,763 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/data/c4cc792e4/3ebf15e0820d4eb6a3b9f352bbc520a7 [2021-11-23 02:46:15,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:46:15,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:46:15,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:46:15,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:46:15,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:46:15,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:46:15" (1/1) ... [2021-11-23 02:46:15,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f254ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:15, skipping insertion in model container [2021-11-23 02:46:15,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:46:15" (1/1) ... [2021-11-23 02:46:15,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:46:15,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:46:16,492 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_602f4da1-9032-4f57-a4e6-f0cc14b6f654/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2021-11-23 02:46:16,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:46:16,507 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:46:16,613 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_602f4da1-9032-4f57-a4e6-f0cc14b6f654/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2021-11-23 02:46:16,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:46:16,654 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:46:16,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:16 WrapperNode [2021-11-23 02:46:16,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:46:16,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:46:16,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:46:16,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:46:16,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:16" (1/1) ... [2021-11-23 02:46:16,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:16" (1/1) ... [2021-11-23 02:46:16,801 INFO L137 Inliner]: procedures = 152, calls = 288, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1326 [2021-11-23 02:46:16,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:46:16,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:46:16,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:46:16,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:46:16,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:16" (1/1) ... [2021-11-23 02:46:16,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:16" (1/1) ... [2021-11-23 02:46:16,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:16" (1/1) ... [2021-11-23 02:46:16,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:16" (1/1) ... [2021-11-23 02:46:16,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:16" (1/1) ... [2021-11-23 02:46:16,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:16" (1/1) ... [2021-11-23 02:46:16,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:16" (1/1) ... [2021-11-23 02:46:16,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:46:16,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:46:16,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:46:16,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:46:16,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:16" (1/1) ... [2021-11-23 02:46:16,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:46:16,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:46:16,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:46:17,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:46:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 02:46:17,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 02:46:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-23 02:46:17,046 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-23 02:46:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-23 02:46:17,047 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-23 02:46:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 02:46:17,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 02:46:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 02:46:17,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 02:46:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 02:46:17,048 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 02:46:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 02:46:17,048 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 02:46:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-23 02:46:17,048 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-23 02:46:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:46:17,048 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:46:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-23 02:46:17,049 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-23 02:46:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:46:17,049 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:46:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:46:17,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:46:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:46:17,050 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:46:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-23 02:46:17,051 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-23 02:46:17,051 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-23 02:46:17,051 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-23 02:46:17,051 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 02:46:17,053 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 02:46:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 02:46:17,054 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 02:46:17,054 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:46:17,054 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:46:17,055 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:46:17,055 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-23 02:46:17,055 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-23 02:46:17,055 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:46:17,055 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:46:17,055 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-23 02:46:17,055 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-23 02:46:17,056 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:46:17,056 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:46:17,056 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-23 02:46:17,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-23 02:46:17,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:46:17,059 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 02:46:17,059 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 02:46:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 02:46:17,060 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 02:46:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-23 02:46:17,061 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-23 02:46:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-23 02:46:17,061 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-23 02:46:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-23 02:46:17,062 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-23 02:46:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 02:46:17,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 02:46:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:46:17,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:46:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:46:17,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:46:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:46:17,063 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:46:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 02:46:17,063 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 02:46:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:46:17,063 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:46:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 02:46:17,063 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 02:46:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-23 02:46:17,064 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-23 02:46:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-23 02:46:17,064 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-23 02:46:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:46:17,065 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:46:17,065 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:46:17,066 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:46:17,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:46:17,066 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:46:17,066 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:46:17,067 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-23 02:46:17,067 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-23 02:46:17,067 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-23 02:46:17,067 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-23 02:46:17,068 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 02:46:17,069 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 02:46:17,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:46:17,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:46:17,308 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:46:17,311 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:46:18,510 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:46:19,066 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:46:19,066 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:46:19,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:46:19 BoogieIcfgContainer [2021-11-23 02:46:19,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:46:19,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:46:19,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:46:19,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:46:19,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:46:15" (1/3) ... [2021-11-23 02:46:19,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6265fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:46:19, skipping insertion in model container [2021-11-23 02:46:19,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:16" (2/3) ... [2021-11-23 02:46:19,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6265fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:46:19, skipping insertion in model container [2021-11-23 02:46:19,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:46:19" (3/3) ... [2021-11-23 02:46:19,078 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_productSimulator.cil.c [2021-11-23 02:46:19,084 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:46:19,084 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:46:19,139 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:46:19,146 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 02:46:19,146 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:46:19,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2021-11-23 02:46:19,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 02:46:19,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:19,192 INFO L514 BasicCegarLoop]: trace histogram [8, 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, 1, 1, 1, 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 02:46:19,193 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:46:19,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:19,198 INFO L85 PathProgramCache]: Analyzing trace with hash 773592641, now seen corresponding path program 1 times [2021-11-23 02:46:19,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:19,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618602225] [2021-11-23 02:46:19,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:19,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-23 02:46:19,632 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:19,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618602225] [2021-11-23 02:46:19,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618602225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:19,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:19,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:46:19,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690452025] [2021-11-23 02:46:19,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:19,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:46:19,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:19,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:46:19,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:46:19,676 INFO L87 Difference]: Start difference. First operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:46:20,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:20,058 INFO L93 Difference]: Finished difference Result 732 states and 1002 transitions. [2021-11-23 02:46:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:46:20,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 97 [2021-11-23 02:46:20,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:20,090 INFO L225 Difference]: With dead ends: 732 [2021-11-23 02:46:20,090 INFO L226 Difference]: Without dead ends: 377 [2021-11-23 02:46:20,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:46:20,107 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 6 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:20,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1383 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:46:20,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-23 02:46:20,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-23 02:46:20,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 223 states have (on average 1.2914798206278026) internal successors, (288), 242 states have internal predecessors, (288), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2021-11-23 02:46:20,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 507 transitions. [2021-11-23 02:46:20,245 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 507 transitions. Word has length 97 [2021-11-23 02:46:20,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:20,249 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 507 transitions. [2021-11-23 02:46:20,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:46:20,250 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 507 transitions. [2021-11-23 02:46:20,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 02:46:20,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:20,267 INFO L514 BasicCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:20,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:46:20,268 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:46:20,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:20,272 INFO L85 PathProgramCache]: Analyzing trace with hash 762710508, now seen corresponding path program 1 times [2021-11-23 02:46:20,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:20,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144078685] [2021-11-23 02:46:20,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:20,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:20,501 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-23 02:46:20,502 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:20,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144078685] [2021-11-23 02:46:20,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144078685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:20,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:20,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:46:20,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579833504] [2021-11-23 02:46:20,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:20,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:46:20,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:20,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:46:20,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:46:20,508 INFO L87 Difference]: Start difference. First operand 377 states and 507 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-23 02:46:20,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:20,703 INFO L93 Difference]: Finished difference Result 731 states and 999 transitions. [2021-11-23 02:46:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:46:20,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 103 [2021-11-23 02:46:20,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:20,709 INFO L225 Difference]: With dead ends: 731 [2021-11-23 02:46:20,709 INFO L226 Difference]: Without dead ends: 375 [2021-11-23 02:46:20,716 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 02:46:20,718 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 476 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:20,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 442 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:46:20,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-23 02:46:20,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2021-11-23 02:46:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 223 states have (on average 1.2690582959641257) internal successors, (283), 240 states have internal predecessors, (283), 107 states have call successors, (107), 44 states have call predecessors, (107), 44 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2021-11-23 02:46:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 496 transitions. [2021-11-23 02:46:20,771 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 496 transitions. Word has length 103 [2021-11-23 02:46:20,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:20,775 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 496 transitions. [2021-11-23 02:46:20,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-23 02:46:20,776 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 496 transitions. [2021-11-23 02:46:20,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-23 02:46:20,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:20,781 INFO L514 BasicCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:20,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:46:20,782 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:46:20,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:20,783 INFO L85 PathProgramCache]: Analyzing trace with hash 753621541, now seen corresponding path program 1 times [2021-11-23 02:46:20,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:20,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560488377] [2021-11-23 02:46:20,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:20,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:20,968 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-23 02:46:20,969 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:20,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560488377] [2021-11-23 02:46:20,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560488377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:20,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:20,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:46:20,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969839180] [2021-11-23 02:46:20,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:20,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:46:20,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:20,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:46:20,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:46:20,976 INFO L87 Difference]: Start difference. First operand 375 states and 496 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:46:21,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:21,122 INFO L93 Difference]: Finished difference Result 724 states and 967 transitions. [2021-11-23 02:46:21,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:46:21,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 114 [2021-11-23 02:46:21,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:21,129 INFO L225 Difference]: With dead ends: 724 [2021-11-23 02:46:21,130 INFO L226 Difference]: Without dead ends: 374 [2021-11-23 02:46:21,131 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 02:46:21,141 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 463 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:21,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 461 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:46:21,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-23 02:46:21,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-11-23 02:46:21,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 223 states have (on average 1.2600896860986548) internal successors, (281), 239 states have internal predecessors, (281), 106 states have call successors, (106), 44 states have call predecessors, (106), 44 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2021-11-23 02:46:21,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 492 transitions. [2021-11-23 02:46:21,204 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 492 transitions. Word has length 114 [2021-11-23 02:46:21,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:21,205 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 492 transitions. [2021-11-23 02:46:21,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:46:21,206 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 492 transitions. [2021-11-23 02:46:21,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 02:46:21,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:21,208 INFO L514 BasicCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:21,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:46:21,209 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:46:21,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:21,210 INFO L85 PathProgramCache]: Analyzing trace with hash 446507475, now seen corresponding path program 1 times [2021-11-23 02:46:21,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:21,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454429999] [2021-11-23 02:46:21,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:21,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-23 02:46:21,282 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:21,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454429999] [2021-11-23 02:46:21,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454429999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:21,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:21,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:46:21,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929883611] [2021-11-23 02:46:21,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:21,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:46:21,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:21,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:46:21,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:46:21,286 INFO L87 Difference]: Start difference. First operand 374 states and 492 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:46:21,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:21,437 INFO L93 Difference]: Finished difference Result 705 states and 926 transitions. [2021-11-23 02:46:21,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:46:21,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 115 [2021-11-23 02:46:21,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:21,443 INFO L225 Difference]: With dead ends: 705 [2021-11-23 02:46:21,444 INFO L226 Difference]: Without dead ends: 371 [2021-11-23 02:46:21,445 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 02:46:21,452 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 436 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:21,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 437 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:46:21,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-23 02:46:21,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-11-23 02:46:21,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 223 states have (on average 1.210762331838565) internal successors, (270), 234 states have internal predecessors, (270), 103 states have call successors, (103), 44 states have call predecessors, (103), 44 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2021-11-23 02:46:21,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 475 transitions. [2021-11-23 02:46:21,485 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 475 transitions. Word has length 115 [2021-11-23 02:46:21,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:21,486 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 475 transitions. [2021-11-23 02:46:21,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:46:21,487 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 475 transitions. [2021-11-23 02:46:21,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-23 02:46:21,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:21,489 INFO L514 BasicCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:21,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:46:21,489 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:46:21,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:21,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1168996932, now seen corresponding path program 1 times [2021-11-23 02:46:21,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:21,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077259603] [2021-11-23 02:46:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:21,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 02:46:21,625 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:21,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077259603] [2021-11-23 02:46:21,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077259603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:21,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:21,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:46:21,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021005958] [2021-11-23 02:46:21,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:21,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:46:21,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:21,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:46:21,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:46:21,629 INFO L87 Difference]: Start difference. First operand 371 states and 475 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:46:21,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:21,797 INFO L93 Difference]: Finished difference Result 587 states and 745 transitions. [2021-11-23 02:46:21,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:46:21,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 127 [2021-11-23 02:46:21,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:21,801 INFO L225 Difference]: With dead ends: 587 [2021-11-23 02:46:21,802 INFO L226 Difference]: Without dead ends: 373 [2021-11-23 02:46:21,803 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 02:46:21,804 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 0 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:21,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 843 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:46:21,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-11-23 02:46:21,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2021-11-23 02:46:21,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 225 states have (on average 1.208888888888889) internal successors, (272), 236 states have internal predecessors, (272), 103 states have call successors, (103), 44 states have call predecessors, (103), 44 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2021-11-23 02:46:21,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 477 transitions. [2021-11-23 02:46:21,830 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 477 transitions. Word has length 127 [2021-11-23 02:46:21,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:21,831 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 477 transitions. [2021-11-23 02:46:21,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:46:21,832 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 477 transitions. [2021-11-23 02:46:21,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-23 02:46:21,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:21,838 INFO L514 BasicCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:21,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:46:21,839 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:46:21,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:21,840 INFO L85 PathProgramCache]: Analyzing trace with hash 687305607, now seen corresponding path program 1 times [2021-11-23 02:46:21,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:21,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051328834] [2021-11-23 02:46:21,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:21,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 02:46:21,959 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:21,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051328834] [2021-11-23 02:46:21,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051328834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:21,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:21,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:46:21,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408612517] [2021-11-23 02:46:21,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:21,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:46:21,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:21,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:46:21,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:46:21,963 INFO L87 Difference]: Start difference. First operand 373 states and 477 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:46:22,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:22,108 INFO L93 Difference]: Finished difference Result 746 states and 978 transitions. [2021-11-23 02:46:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:46:22,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 132 [2021-11-23 02:46:22,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:22,114 INFO L225 Difference]: With dead ends: 746 [2021-11-23 02:46:22,114 INFO L226 Difference]: Without dead ends: 440 [2021-11-23 02:46:22,116 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 02:46:22,119 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 76 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:22,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 864 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:46:22,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-23 02:46:22,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 435. [2021-11-23 02:46:22,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 273 states have (on average 1.2527472527472527) internal successors, (342), 284 states have internal predecessors, (342), 117 states have call successors, (117), 44 states have call predecessors, (117), 44 states have return successors, (116), 115 states have call predecessors, (116), 116 states have call successors, (116) [2021-11-23 02:46:22,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 575 transitions. [2021-11-23 02:46:22,159 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 575 transitions. Word has length 132 [2021-11-23 02:46:22,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:22,160 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 575 transitions. [2021-11-23 02:46:22,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:46:22,162 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 575 transitions. [2021-11-23 02:46:22,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-23 02:46:22,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:22,165 INFO L514 BasicCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:22,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:46:22,166 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:46:22,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:22,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1363662011, now seen corresponding path program 1 times [2021-11-23 02:46:22,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:22,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164090772] [2021-11-23 02:46:22,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:22,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:22,296 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 02:46:22,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:22,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164090772] [2021-11-23 02:46:22,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164090772] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:46:22,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16442346] [2021-11-23 02:46:22,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:22,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:46:22,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:46:22,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:46:22,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:46:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:22,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:46:22,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:46:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 02:46:23,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:46:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 02:46:23,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16442346] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:46:23,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [876343835] [2021-11-23 02:46:23,389 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2021-11-23 02:46:23,390 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:46:23,395 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:46:23,403 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:46:23,403 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:47:43,972 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 711 for LOIs [2021-11-23 02:47:45,157 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 516 for LOIs [2021-11-23 02:47:46,512 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 279 for LOIs [2021-11-23 02:47:48,395 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2021-11-23 02:47:48,633 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 250 for LOIs [2021-11-23 02:47:49,465 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 455 for LOIs [2021-11-23 02:47:49,723 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 247 for LOIs [2021-11-23 02:47:49,767 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 443 for LOIs [2021-11-23 02:47:50,007 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 281 for LOIs [2021-11-23 02:47:50,160 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 269 for LOIs [2021-11-23 02:47:50,313 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 267 for LOIs [2021-11-23 02:47:56,869 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 281 for LOIs [2021-11-23 02:47:58,197 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 468 for LOIs [2021-11-23 02:47:59,753 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 419 for LOIs [2021-11-23 02:47:59,927 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 235 for LOIs [2021-11-23 02:47:59,972 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:49:08,152 WARN L227 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 455 DAG size of output: 315 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:13,800 WARN L227 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 478 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:24,256 WARN L227 SmtUtils]: Spent 9.00s on a formula simplification. DAG size of input: 750 DAG size of output: 565 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:38,562 WARN L227 SmtUtils]: Spent 7.84s on a formula simplification. DAG size of input: 739 DAG size of output: 531 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:49,723 WARN L227 SmtUtils]: Spent 9.40s on a formula simplification. DAG size of input: 745 DAG size of output: 592 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:58,030 WARN L227 SmtUtils]: Spent 7.36s on a formula simplification. DAG size of input: 749 DAG size of output: 544 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:50:05,460 WARN L227 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 711 DAG size of output: 542 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:50:31,867 WARN L227 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 560 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:50:39,697 WARN L227 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 562 DAG size of output: 428 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:50:55,132 WARN L227 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 559 DAG size of output: 369 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:51:00,891 WARN L227 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 554 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:51:17,362 WARN L227 SmtUtils]: Spent 12.10s on a formula simplification. DAG size of input: 468 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:07,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [876343835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:07,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:52:07,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [4, 4, 4] total 91 [2021-11-23 02:52:07,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688008588] [2021-11-23 02:52:07,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:07,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-11-23 02:52:07,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:07,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-11-23 02:52:07,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=7872, Unknown=0, NotChecked=0, Total=8190 [2021-11-23 02:52:07,758 INFO L87 Difference]: Start difference. First operand 435 states and 575 transitions. Second operand has 86 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 56 states have internal predecessors, (69), 26 states have call successors, (28), 16 states have call predecessors, (28), 11 states have return successors, (23), 23 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-23 02:52:15,466 WARN L227 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:23,448 WARN L227 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:31,578 WARN L227 SmtUtils]: Spent 7.02s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:39,221 WARN L227 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:47,327 WARN L227 SmtUtils]: Spent 7.16s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:55,042 WARN L227 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:53:02,896 WARN L227 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:53:10,784 WARN L227 SmtUtils]: Spent 7.03s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:53:27,488 WARN L227 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 526 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:54:40,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:40,867 INFO L93 Difference]: Finished difference Result 1147 states and 1601 transitions. [2021-11-23 02:54:40,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-11-23 02:54:40,868 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 56 states have internal predecessors, (69), 26 states have call successors, (28), 16 states have call predecessors, (28), 11 states have return successors, (23), 23 states have call predecessors, (23), 21 states have call successors, (23) Word has length 133 [2021-11-23 02:54:40,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:40,875 INFO L225 Difference]: With dead ends: 1147 [2021-11-23 02:54:40,875 INFO L226 Difference]: Without dead ends: 742 [2021-11-23 02:54:40,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 306 SyntacticMatches, 6 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4668 ImplicationChecksByTransitivity, 343.3s TimeCoverageRelationStatistics Valid=500, Invalid=11710, Unknown=0, NotChecked=0, Total=12210 [2021-11-23 02:54:40,883 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 614 mSDsluCounter, 12930 mSDsCounter, 0 mSdLazyCounter, 18375 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 13064 SdHoareTripleChecker+Invalid, 18464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 18375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:40,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 13064 Invalid, 18464 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [89 Valid, 18375 Invalid, 0 Unknown, 0 Unchecked, 56.5s Time] [2021-11-23 02:54:40,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-11-23 02:54:41,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 583. [2021-11-23 02:54:41,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 387 states have (on average 1.2945736434108528) internal successors, (501), 398 states have internal predecessors, (501), 136 states have call successors, (136), 64 states have call predecessors, (136), 59 states have return successors, (135), 129 states have call predecessors, (135), 135 states have call successors, (135) [2021-11-23 02:54:41,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 772 transitions. [2021-11-23 02:54:41,094 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 772 transitions. Word has length 133 [2021-11-23 02:54:41,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:41,095 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 772 transitions. [2021-11-23 02:54:41,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 56 states have internal predecessors, (69), 26 states have call successors, (28), 16 states have call predecessors, (28), 11 states have return successors, (23), 23 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-23 02:54:41,096 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 772 transitions. [2021-11-23 02:54:41,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-23 02:54:41,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:41,100 INFO L514 BasicCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:41,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 02:54:41,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:54:41,302 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:54:41,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:41,302 INFO L85 PathProgramCache]: Analyzing trace with hash -98183853, now seen corresponding path program 1 times [2021-11-23 02:54:41,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:54:41,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408897902] [2021-11-23 02:54:41,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:41,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-23 02:54:41,393 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:54:41,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408897902] [2021-11-23 02:54:41,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408897902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:41,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:41,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:54:41,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276435106] [2021-11-23 02:54:41,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:41,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:54:41,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:54:41,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:54:41,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:54:41,398 INFO L87 Difference]: Start difference. First operand 583 states and 772 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:54:41,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:41,922 INFO L93 Difference]: Finished difference Result 1333 states and 1809 transitions. [2021-11-23 02:54:41,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:54:41,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 134 [2021-11-23 02:54:41,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:41,935 INFO L225 Difference]: With dead ends: 1333 [2021-11-23 02:54:41,935 INFO L226 Difference]: Without dead ends: 929 [2021-11-23 02:54:41,938 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 02:54:41,939 INFO L933 BasicCegarLoop]: 748 mSDtfsCounter, 441 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:41,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 1130 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:54:41,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-11-23 02:54:42,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 927. [2021-11-23 02:54:42,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 603 states have (on average 1.2885572139303483) internal successors, (777), 621 states have internal predecessors, (777), 226 states have call successors, (226), 102 states have call predecessors, (226), 97 states have return successors, (240), 218 states have call predecessors, (240), 224 states have call successors, (240) [2021-11-23 02:54:42,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1243 transitions. [2021-11-23 02:54:42,230 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1243 transitions. Word has length 134 [2021-11-23 02:54:42,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:42,230 INFO L470 AbstractCegarLoop]: Abstraction has 927 states and 1243 transitions. [2021-11-23 02:54:42,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:54:42,231 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1243 transitions. [2021-11-23 02:54:42,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-23 02:54:42,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:42,236 INFO L514 BasicCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:42,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:54:42,236 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:54:42,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:42,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2002086776, now seen corresponding path program 1 times [2021-11-23 02:54:42,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:54:42,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739952630] [2021-11-23 02:54:42,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:42,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-23 02:54:42,306 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:54:42,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739952630] [2021-11-23 02:54:42,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739952630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:42,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:42,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:54:42,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92788786] [2021-11-23 02:54:42,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:42,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:54:42,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:54:42,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:54:42,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:54:42,309 INFO L87 Difference]: Start difference. First operand 927 states and 1243 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:54:42,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:42,853 INFO L93 Difference]: Finished difference Result 1876 states and 2527 transitions. [2021-11-23 02:54:42,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:54:42,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 135 [2021-11-23 02:54:42,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:42,867 INFO L225 Difference]: With dead ends: 1876 [2021-11-23 02:54:42,867 INFO L226 Difference]: Without dead ends: 1291 [2021-11-23 02:54:42,871 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 02:54:42,875 INFO L933 BasicCegarLoop]: 770 mSDtfsCounter, 440 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:42,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 1167 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:54:42,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-11-23 02:54:43,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1289. [2021-11-23 02:54:43,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 809 states have (on average 1.2521631644004945) internal successors, (1013), 835 states have internal predecessors, (1013), 324 states have call successors, (324), 158 states have call predecessors, (324), 155 states have return successors, (377), 319 states have call predecessors, (377), 317 states have call successors, (377) [2021-11-23 02:54:43,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1714 transitions. [2021-11-23 02:54:43,219 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1714 transitions. Word has length 135 [2021-11-23 02:54:43,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:43,219 INFO L470 AbstractCegarLoop]: Abstraction has 1289 states and 1714 transitions. [2021-11-23 02:54:43,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:54:43,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1714 transitions. [2021-11-23 02:54:43,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-23 02:54:43,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:43,225 INFO L514 BasicCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:43,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:54:43,226 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:54:43,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:43,227 INFO L85 PathProgramCache]: Analyzing trace with hash -2106639352, now seen corresponding path program 1 times [2021-11-23 02:54:43,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:54:43,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465804800] [2021-11-23 02:54:43,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:43,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 02:54:43,342 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:54:43,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465804800] [2021-11-23 02:54:43,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465804800] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:54:43,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207577378] [2021-11-23 02:54:43,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:43,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:54:43,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:54:43,344 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:54:43,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602f4da1-9032-4f57-a4e6-f0cc14b6f654/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:54:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:43,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1422 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:54:43,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:54:44,052 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 02:54:44,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:54:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 02:54:44,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207577378] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:54:44,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1598393419] [2021-11-23 02:54:44,438 INFO L159 IcfgInterpreter]: Started Sifa with 113 locations of interest [2021-11-23 02:54:44,438 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:54:44,439 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:54:44,440 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:54:44,440 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:56:03,737 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 711 for LOIs [2021-11-23 02:56:05,047 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 516 for LOIs [2021-11-23 02:56:06,546 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 279 for LOIs [2021-11-23 02:56:08,504 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2021-11-23 02:56:08,793 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 250 for LOIs [2021-11-23 02:56:09,638 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 441 for LOIs [2021-11-23 02:56:09,905 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 247 for LOIs [2021-11-23 02:56:09,953 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 443 for LOIs [2021-11-23 02:56:10,320 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 279 for LOIs [2021-11-23 02:56:10,500 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 269 for LOIs [2021-11-23 02:56:11,427 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 283 for LOIs [2021-11-23 02:56:15,940 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 453 for LOIs [2021-11-23 02:56:19,857 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 465 for LOIs [2021-11-23 02:56:21,659 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 419 for LOIs [2021-11-23 02:56:21,869 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 250 for LOIs [2021-11-23 02:56:21,928 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 239 for LOIs [2021-11-23 02:56:21,984 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:57:50,244 WARN L227 SmtUtils]: Spent 11.21s on a formula simplification. DAG size of input: 750 DAG size of output: 565 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)