./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product29.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_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/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_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/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_80b02916-9493-483e-8c25-20bb5fb746ed/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 3d972cfbd720871733ec5c68c499418657e5e73014fcfa137b0a1c37f3300ef7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:43:38,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:43:38,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:43:39,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:43:39,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:43:39,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:43:39,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:43:39,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:43:39,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:43:39,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:43:39,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:43:39,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:43:39,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:43:39,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:43:39,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:43:39,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:43:39,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:43:39,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:43:39,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:43:39,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:43:39,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:43:39,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:43:39,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:43:39,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:43:39,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:43:39,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:43:39,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:43:39,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:43:39,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:43:39,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:43:39,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:43:39,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:43:39,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:43:39,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:43:39,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:43:39,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:43:39,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:43:39,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:43:39,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:43:39,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:43:39,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:43:39,115 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:43:39,138 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:43:39,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:43:39,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:43:39,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:43:39,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:43:39,140 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:43:39,141 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:43:39,141 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:43:39,141 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:43:39,141 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:43:39,142 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:43:39,142 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:43:39,142 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:43:39,142 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:43:39,142 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:43:39,143 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:43:39,143 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:43:39,143 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:43:39,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:43:39,144 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:43:39,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:43:39,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:43:39,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:43:39,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:43:39,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:43:39,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:43:39,146 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:43:39,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:43:39,146 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:43:39,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:43:39,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:43:39,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:43:39,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:43:39,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:43:39,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:43:39,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:43:39,152 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:43:39,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:43:39,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:43:39,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:43:39,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:43:39,153 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_80b02916-9493-483e-8c25-20bb5fb746ed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d972cfbd720871733ec5c68c499418657e5e73014fcfa137b0a1c37f3300ef7 [2021-11-23 02:43:39,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:43:39,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:43:39,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:43:39,440 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:43:39,441 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:43:39,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec6_product29.cil.c [2021-11-23 02:43:39,544 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/data/e9734aabf/3f4d9d92560f4efd9ebd4cffefac47c8/FLAG53471d8c8 [2021-11-23 02:43:40,130 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:43:40,130 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/sv-benchmarks/c/product-lines/email_spec6_product29.cil.c [2021-11-23 02:43:40,157 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/data/e9734aabf/3f4d9d92560f4efd9ebd4cffefac47c8/FLAG53471d8c8 [2021-11-23 02:43:40,369 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/data/e9734aabf/3f4d9d92560f4efd9ebd4cffefac47c8 [2021-11-23 02:43:40,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:43:40,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:43:40,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:43:40,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:43:40,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:43:40,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:43:40" (1/1) ... [2021-11-23 02:43:40,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16175f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:40, skipping insertion in model container [2021-11-23 02:43:40,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:43:40" (1/1) ... [2021-11-23 02:43:40,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:43:40,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:43:40,891 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_80b02916-9493-483e-8c25-20bb5fb746ed/sv-benchmarks/c/product-lines/email_spec6_product29.cil.c[42927,42940] [2021-11-23 02:43:41,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:43:41,016 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:43:41,126 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_80b02916-9493-483e-8c25-20bb5fb746ed/sv-benchmarks/c/product-lines/email_spec6_product29.cil.c[42927,42940] [2021-11-23 02:43:41,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:43:41,191 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:43:41,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41 WrapperNode [2021-11-23 02:43:41,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:43:41,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:43:41,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:43:41,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:43:41,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2021-11-23 02:43:41,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2021-11-23 02:43:41,327 INFO L137 Inliner]: procedures = 132, calls = 234, calls flagged for inlining = 56, calls inlined = 48, statements flattened = 950 [2021-11-23 02:43:41,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:43:41,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:43:41,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:43:41,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:43:41,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2021-11-23 02:43:41,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2021-11-23 02:43:41,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2021-11-23 02:43:41,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2021-11-23 02:43:41,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2021-11-23 02:43:41,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2021-11-23 02:43:41,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2021-11-23 02:43:41,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:43:41,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:43:41,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:43:41,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:43:41,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2021-11-23 02:43:41,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:43:41,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:41,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:43:41,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:43:41,518 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 02:43:41,518 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 02:43:41,519 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 02:43:41,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 02:43:41,519 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 02:43:41,519 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 02:43:41,519 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 02:43:41,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 02:43:41,520 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 02:43:41,520 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 02:43:41,520 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:43:41,520 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:43:41,520 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:43:41,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:43:41,521 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:43:41,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:43:41,521 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:43:41,521 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:43:41,521 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 02:43:41,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 02:43:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 02:43:41,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 02:43:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:43:41,522 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:43:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:43:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:43:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:43:41,523 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:43:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:43:41,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:43:41,523 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 02:43:41,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 02:43:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 02:43:41,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 02:43:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 02:43:41,524 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 02:43:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:43:41,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:43:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:43:41,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:43:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:43:41,525 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:43:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2021-11-23 02:43:41,526 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2021-11-23 02:43:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 02:43:41,526 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 02:43:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:43:41,526 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:43:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 02:43:41,527 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 02:43:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:43:41,527 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:43:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:43:41,527 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:43:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:43:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:43:41,528 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:43:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 02:43:41,528 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 02:43:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:43:41,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:43:41,765 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:43:41,768 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:43:42,655 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:43:43,172 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:43:43,173 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:43:43,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:43:43 BoogieIcfgContainer [2021-11-23 02:43:43,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:43:43,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:43:43,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:43:43,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:43:43,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:43:40" (1/3) ... [2021-11-23 02:43:43,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@943fb7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:43:43, skipping insertion in model container [2021-11-23 02:43:43,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (2/3) ... [2021-11-23 02:43:43,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@943fb7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:43:43, skipping insertion in model container [2021-11-23 02:43:43,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:43:43" (3/3) ... [2021-11-23 02:43:43,188 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec6_product29.cil.c [2021-11-23 02:43:43,197 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:43:43,197 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:43:43,266 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:43:43,275 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 02:43:43,275 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:43:43,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 217 states, 122 states have (on average 1.3032786885245902) internal successors, (159), 127 states have internal predecessors, (159), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2021-11-23 02:43:43,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 02:43:43,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:43,342 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:43,342 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:43:43,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:43,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1266587746, now seen corresponding path program 1 times [2021-11-23 02:43:43,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:43,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024227684] [2021-11-23 02:43:43,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:43,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:43:43,780 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:43,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024227684] [2021-11-23 02:43:43,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024227684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:43,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:43,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:43:43,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057093239] [2021-11-23 02:43:43,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:43,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:43:43,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:43,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:43:43,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:43:43,827 INFO L87 Difference]: Start difference. First operand has 217 states, 122 states have (on average 1.3032786885245902) internal successors, (159), 127 states have internal predecessors, (159), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:43:44,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:44,012 INFO L93 Difference]: Finished difference Result 342 states and 449 transitions. [2021-11-23 02:43:44,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:43:44,018 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 87 [2021-11-23 02:43:44,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:44,047 INFO L225 Difference]: With dead ends: 342 [2021-11-23 02:43:44,048 INFO L226 Difference]: Without dead ends: 214 [2021-11-23 02:43:44,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:43:44,063 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:44,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 247 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:44,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-23 02:43:44,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-11-23 02:43:44,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 120 states have (on average 1.275) internal successors, (153), 124 states have internal predecessors, (153), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-23 02:43:44,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 282 transitions. [2021-11-23 02:43:44,170 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 282 transitions. Word has length 87 [2021-11-23 02:43:44,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:44,172 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 282 transitions. [2021-11-23 02:43:44,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:43:44,173 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 282 transitions. [2021-11-23 02:43:44,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-23 02:43:44,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:44,184 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:44,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:43:44,185 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:43:44,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:44,187 INFO L85 PathProgramCache]: Analyzing trace with hash -104098353, now seen corresponding path program 1 times [2021-11-23 02:43:44,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:44,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124383041] [2021-11-23 02:43:44,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:44,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:44,431 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:43:44,431 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:44,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124383041] [2021-11-23 02:43:44,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124383041] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:44,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:44,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:43:44,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65427128] [2021-11-23 02:43:44,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:44,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:43:44,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:44,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:43:44,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:44,436 INFO L87 Difference]: Start difference. First operand 214 states and 282 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:43:44,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:44,607 INFO L93 Difference]: Finished difference Result 338 states and 434 transitions. [2021-11-23 02:43:44,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:43:44,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 99 [2021-11-23 02:43:44,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:44,615 INFO L225 Difference]: With dead ends: 338 [2021-11-23 02:43:44,615 INFO L226 Difference]: Without dead ends: 216 [2021-11-23 02:43:44,616 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 02:43:44,617 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 0 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:44,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 487 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:44,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-23 02:43:44,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-23 02:43:44,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 122 states have (on average 1.2704918032786885) internal successors, (155), 126 states have internal predecessors, (155), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-23 02:43:44,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 284 transitions. [2021-11-23 02:43:44,640 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 284 transitions. Word has length 99 [2021-11-23 02:43:44,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:44,641 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 284 transitions. [2021-11-23 02:43:44,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:43:44,642 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 284 transitions. [2021-11-23 02:43:44,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-23 02:43:44,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:44,644 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:44,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:43:44,645 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:43:44,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:44,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1893360858, now seen corresponding path program 1 times [2021-11-23 02:43:44,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:44,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786025390] [2021-11-23 02:43:44,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:44,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:44,741 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:43:44,742 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:44,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786025390] [2021-11-23 02:43:44,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786025390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:44,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:44,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:43:44,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947257700] [2021-11-23 02:43:44,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:44,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:43:44,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:44,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:43:44,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:44,745 INFO L87 Difference]: Start difference. First operand 216 states and 284 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:43:44,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:44,896 INFO L93 Difference]: Finished difference Result 467 states and 635 transitions. [2021-11-23 02:43:44,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:43:44,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 104 [2021-11-23 02:43:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:44,905 INFO L225 Difference]: With dead ends: 467 [2021-11-23 02:43:44,905 INFO L226 Difference]: Without dead ends: 269 [2021-11-23 02:43:44,907 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 02:43:44,914 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 59 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:44,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 501 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:44,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-11-23 02:43:44,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 264. [2021-11-23 02:43:44,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 156 states have (on average 1.3461538461538463) internal successors, (210), 160 states have internal predecessors, (210), 79 states have call successors, (79), 28 states have call predecessors, (79), 28 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78) [2021-11-23 02:43:44,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 367 transitions. [2021-11-23 02:43:44,962 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 367 transitions. Word has length 104 [2021-11-23 02:43:44,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:44,962 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 367 transitions. [2021-11-23 02:43:44,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:43:44,963 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 367 transitions. [2021-11-23 02:43:44,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 02:43:44,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:44,972 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:44,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:43:44,973 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:43:44,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:44,974 INFO L85 PathProgramCache]: Analyzing trace with hash -370676273, now seen corresponding path program 1 times [2021-11-23 02:43:44,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:44,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138237855] [2021-11-23 02:43:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:44,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:45,128 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:43:45,128 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:45,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138237855] [2021-11-23 02:43:45,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138237855] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:43:45,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999085842] [2021-11-23 02:43:45,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:45,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:45,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:45,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:43:45,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:43:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:45,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:43:45,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:45,713 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:43:45,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:43:45,967 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:43:45,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999085842] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:43:45,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1860649768] [2021-11-23 02:43:45,994 INFO L159 IcfgInterpreter]: Started Sifa with 86 locations of interest [2021-11-23 02:43:45,996 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:43:46,002 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:43:46,009 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:43:46,012 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:44:15,041 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:44:15,325 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 264 for LOIs [2021-11-23 02:44:17,213 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:44:17,462 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 266 for LOIs [2021-11-23 02:44:20,624 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 230 for LOIs [2021-11-23 02:44:20,673 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 238 for LOIs [2021-11-23 02:44:20,717 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 238 for LOIs [2021-11-23 02:44:20,757 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 252 for LOIs [2021-11-23 02:44:20,809 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:45:04,761 WARN L227 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 512 DAG size of output: 371 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:45:15,779 WARN L227 SmtUtils]: Spent 9.64s on a formula simplification. DAG size of input: 582 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:45:43,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1860649768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:45:43,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:45:43,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [4, 4, 4] total 46 [2021-11-23 02:45:43,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362064452] [2021-11-23 02:45:43,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:45:43,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-23 02:45:43,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:45:43,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-23 02:45:43,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1948, Unknown=0, NotChecked=0, Total=2070 [2021-11-23 02:45:43,044 INFO L87 Difference]: Start difference. First operand 264 states and 367 transitions. Second operand has 41 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 13 states have call successors, (24), 9 states have call predecessors, (24), 7 states have return successors, (21), 11 states have call predecessors, (21), 11 states have call successors, (21) [2021-11-23 02:46:04,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:04,878 INFO L93 Difference]: Finished difference Result 633 states and 933 transitions. [2021-11-23 02:46:04,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-23 02:46:04,879 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 13 states have call successors, (24), 9 states have call predecessors, (24), 7 states have return successors, (21), 11 states have call predecessors, (21), 11 states have call successors, (21) Word has length 105 [2021-11-23 02:46:04,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:04,883 INFO L225 Difference]: With dead ends: 633 [2021-11-23 02:46:04,883 INFO L226 Difference]: Without dead ends: 387 [2021-11-23 02:46:04,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 89.8s TimeCoverageRelationStatistics Valid=146, Invalid=2304, Unknown=0, NotChecked=0, Total=2450 [2021-11-23 02:46:04,886 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 227 mSDsluCounter, 5615 mSDsCounter, 0 mSdLazyCounter, 5413 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 5763 SdHoareTripleChecker+Invalid, 5438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 5413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:04,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 5763 Invalid, 5438 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [25 Valid, 5413 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2021-11-23 02:46:04,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-23 02:46:04,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 334. [2021-11-23 02:46:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 215 states have (on average 1.4093023255813955) internal successors, (303), 219 states have internal predecessors, (303), 85 states have call successors, (85), 35 states have call predecessors, (85), 33 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2021-11-23 02:46:04,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 472 transitions. [2021-11-23 02:46:04,984 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 472 transitions. Word has length 105 [2021-11-23 02:46:04,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:04,985 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 472 transitions. [2021-11-23 02:46:04,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 13 states have call successors, (24), 9 states have call predecessors, (24), 7 states have return successors, (21), 11 states have call predecessors, (21), 11 states have call successors, (21) [2021-11-23 02:46:04,985 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 472 transitions. [2021-11-23 02:46:04,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-23 02:46:04,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:04,988 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:05,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 02:46:05,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:46:05,190 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:46:05,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:05,190 INFO L85 PathProgramCache]: Analyzing trace with hash -875817901, now seen corresponding path program 1 times [2021-11-23 02:46:05,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:05,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661253369] [2021-11-23 02:46:05,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:05,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:05,275 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:46:05,276 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:05,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661253369] [2021-11-23 02:46:05,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661253369] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:46:05,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853200902] [2021-11-23 02:46:05,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:05,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:46:05,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:46:05,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:46:05,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:46:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:05,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:46:05,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:46:05,752 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:46:05,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:46:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:46:05,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853200902] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:46:05,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [663555729] [2021-11-23 02:46:05,921 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2021-11-23 02:46:05,921 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:46:05,922 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:46:05,923 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:46:05,923 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:46:33,410 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:46:33,655 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 264 for LOIs [2021-11-23 02:46:35,329 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 238 for LOIs [2021-11-23 02:46:35,374 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:46:35,620 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 264 for LOIs [2021-11-23 02:46:38,490 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 266 for LOIs [2021-11-23 02:46:47,769 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 228 for LOIs [2021-11-23 02:46:47,809 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 247 for LOIs [2021-11-23 02:46:47,902 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 245 for LOIs [2021-11-23 02:46:47,958 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2021-11-23 02:46:49,478 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 249 for LOIs [2021-11-23 02:46:49,523 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 252 for LOIs [2021-11-23 02:46:49,574 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:47:33,171 WARN L227 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 512 DAG size of output: 371 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:47:44,092 WARN L227 SmtUtils]: Spent 9.65s on a formula simplification. DAG size of input: 582 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:48:03,055 WARN L227 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 565 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:48:13,184 WARN L227 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 480 DAG size of output: 274 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:20,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [663555729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:49:20,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:49:20,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [4, 4, 4] total 65 [2021-11-23 02:49:20,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994291263] [2021-11-23 02:49:20,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:49:20,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-11-23 02:49:20,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:49:20,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-11-23 02:49:20,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=3987, Unknown=0, NotChecked=0, Total=4160 [2021-11-23 02:49:20,420 INFO L87 Difference]: Start difference. First operand 334 states and 472 transitions. Second operand has 60 states, 38 states have (on average 1.236842105263158) internal successors, (47), 35 states have internal predecessors, (47), 19 states have call successors, (21), 13 states have call predecessors, (21), 10 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2021-11-23 02:50:02,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:50:02,638 INFO L93 Difference]: Finished difference Result 555 states and 782 transitions. [2021-11-23 02:50:02,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-23 02:50:02,639 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 38 states have (on average 1.236842105263158) internal successors, (47), 35 states have internal predecessors, (47), 19 states have call successors, (21), 13 states have call predecessors, (21), 10 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) Word has length 94 [2021-11-23 02:50:02,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:50:02,643 INFO L225 Difference]: With dead ends: 555 [2021-11-23 02:50:02,644 INFO L226 Difference]: Without dead ends: 440 [2021-11-23 02:50:02,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 219 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1250 ImplicationChecksByTransitivity, 170.6s TimeCoverageRelationStatistics Valid=231, Invalid=5171, Unknown=0, NotChecked=0, Total=5402 [2021-11-23 02:50:02,648 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 227 mSDsluCounter, 7119 mSDsCounter, 0 mSdLazyCounter, 8697 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 7225 SdHoareTripleChecker+Invalid, 8723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 8697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:50:02,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 7225 Invalid, 8723 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [26 Valid, 8697 Invalid, 0 Unknown, 0 Unchecked, 22.0s Time] [2021-11-23 02:50:02,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-23 02:50:02,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 383. [2021-11-23 02:50:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 245 states have (on average 1.383673469387755) internal successors, (339), 250 states have internal predecessors, (339), 99 states have call successors, (99), 40 states have call predecessors, (99), 38 states have return successors, (99), 94 states have call predecessors, (99), 98 states have call successors, (99) [2021-11-23 02:50:02,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 537 transitions. [2021-11-23 02:50:02,760 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 537 transitions. Word has length 94 [2021-11-23 02:50:02,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:50:02,761 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 537 transitions. [2021-11-23 02:50:02,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 38 states have (on average 1.236842105263158) internal successors, (47), 35 states have internal predecessors, (47), 19 states have call successors, (21), 13 states have call predecessors, (21), 10 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2021-11-23 02:50:02,762 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 537 transitions. [2021-11-23 02:50:02,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-23 02:50:02,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:50:02,765 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:50:02,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:50:02,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:50:02,971 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:50:02,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:50:02,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1293144592, now seen corresponding path program 1 times [2021-11-23 02:50:02,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:50:02,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787416900] [2021-11-23 02:50:02,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:50:02,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:50:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:50:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:50:03,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:50:03,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787416900] [2021-11-23 02:50:03,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787416900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:50:03,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:50:03,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:50:03,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590587494] [2021-11-23 02:50:03,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:50:03,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:50:03,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:50:03,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:50:03,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:50:03,056 INFO L87 Difference]: Start difference. First operand 383 states and 537 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 02:50:03,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:50:03,360 INFO L93 Difference]: Finished difference Result 890 states and 1296 transitions. [2021-11-23 02:50:03,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:50:03,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 99 [2021-11-23 02:50:03,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:50:03,368 INFO L225 Difference]: With dead ends: 890 [2021-11-23 02:50:03,368 INFO L226 Difference]: Without dead ends: 533 [2021-11-23 02:50:03,370 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 02:50:03,372 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 57 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:50:03,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 512 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:50:03,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-11-23 02:50:03,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 526. [2021-11-23 02:50:03,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 357 states have (on average 1.4565826330532212) internal successors, (520), 362 states have internal predecessors, (520), 130 states have call successors, (130), 40 states have call predecessors, (130), 38 states have return successors, (130), 125 states have call predecessors, (130), 129 states have call successors, (130) [2021-11-23 02:50:03,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 780 transitions. [2021-11-23 02:50:03,610 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 780 transitions. Word has length 99 [2021-11-23 02:50:03,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:50:03,612 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 780 transitions. [2021-11-23 02:50:03,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 02:50:03,612 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 780 transitions. [2021-11-23 02:50:03,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 02:50:03,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:50:03,617 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:50:03,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:50:03,617 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:50:03,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:50:03,618 INFO L85 PathProgramCache]: Analyzing trace with hash 924575640, now seen corresponding path program 1 times [2021-11-23 02:50:03,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:50:03,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376442738] [2021-11-23 02:50:03,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:50:03,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:50:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:50:03,724 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-23 02:50:03,725 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:50:03,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376442738] [2021-11-23 02:50:03,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376442738] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:50:03,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451481946] [2021-11-23 02:50:03,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:50:03,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:50:03,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:50:03,727 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:50:03,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:50:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:50:03,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 1237 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:50:03,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:50:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-23 02:50:04,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:50:04,313 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-23 02:50:04,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451481946] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:50:04,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [203790306] [2021-11-23 02:50:04,319 INFO L159 IcfgInterpreter]: Started Sifa with 90 locations of interest [2021-11-23 02:50:04,319 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:50:04,320 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:50:04,320 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:50:04,320 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:50:45,825 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:50:46,074 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:50:46,323 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:51:32,262 WARN L227 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 512 DAG size of output: 371 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:51:46,419 WARN L227 SmtUtils]: Spent 13.89s on a formula simplification. DAG size of input: 583 DAG size of output: 391 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:07,951 WARN L227 SmtUtils]: Spent 6.63s on a formula simplification. DAG size of input: 566 DAG size of output: 413 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:14,905 WARN L227 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 562 DAG size of output: 409 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:32,007 WARN L227 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 584 DAG size of output: 401 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:32,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [203790306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:32,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:52:32,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2021-11-23 02:52:32,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809031543] [2021-11-23 02:52:32,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:32,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 02:52:32,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:32,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 02:52:32,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2021-11-23 02:52:32,191 INFO L87 Difference]: Start difference. First operand 526 states and 780 transitions. Second operand has 25 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 8 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2021-11-23 02:52:43,030 WARN L227 SmtUtils]: Spent 9.91s on a formula simplification. DAG size of input: 494 DAG size of output: 396 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:53:06,833 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 511 DAG size of output: 389 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:53:11,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:53:11,939 INFO L93 Difference]: Finished difference Result 1026 states and 1576 transitions. [2021-11-23 02:53:11,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-23 02:53:11,941 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 8 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 111 [2021-11-23 02:53:11,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:53:11,947 INFO L225 Difference]: With dead ends: 1026 [2021-11-23 02:53:11,947 INFO L226 Difference]: Without dead ends: 680 [2021-11-23 02:53:11,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 305 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 138.7s TimeCoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2021-11-23 02:53:11,950 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 151 mSDsluCounter, 3648 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 3785 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:53:11,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 3785 Invalid, 2163 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 2146 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-23 02:53:11,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-11-23 02:53:12,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 591. [2021-11-23 02:53:12,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 418 states have (on average 1.4808612440191387) internal successors, (619), 425 states have internal predecessors, (619), 133 states have call successors, (133), 41 states have call predecessors, (133), 39 states have return successors, (133), 126 states have call predecessors, (133), 132 states have call successors, (133) [2021-11-23 02:53:12,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 885 transitions. [2021-11-23 02:53:12,186 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 885 transitions. Word has length 111 [2021-11-23 02:53:12,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:12,186 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 885 transitions. [2021-11-23 02:53:12,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 8 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2021-11-23 02:53:12,187 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 885 transitions. [2021-11-23 02:53:12,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-23 02:53:12,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:12,191 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:53:12,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:53:12,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 02:53:12,403 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:53:12,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:12,403 INFO L85 PathProgramCache]: Analyzing trace with hash -485239681, now seen corresponding path program 1 times [2021-11-23 02:53:12,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:12,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487116468] [2021-11-23 02:53:12,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:12,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:53:12,508 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:53:12,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487116468] [2021-11-23 02:53:12,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487116468] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:53:12,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309734808] [2021-11-23 02:53:12,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:12,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:53:12,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:53:12,510 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:53:12,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b02916-9493-483e-8c25-20bb5fb746ed/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:53:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:12,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:53:12,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:53:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:53:13,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:53:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:53:13,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309734808] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:53:13,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1716415829] [2021-11-23 02:53:13,219 INFO L159 IcfgInterpreter]: Started Sifa with 95 locations of interest [2021-11-23 02:53:13,219 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:53:13,220 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:53:13,220 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:53:13,220 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:53:58,832 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:53:59,089 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 238 for LOIs [2021-11-23 02:53:59,167 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 235 for LOIs [2021-11-23 02:53:59,235 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 432 for LOIs [2021-11-23 02:53:59,501 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:53:59,767 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:54:17,070 WARN L227 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 468 DAG size of output: 263 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:54:47,318 WARN L227 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 510 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:54:55,264 WARN L227 SmtUtils]: Spent 7.49s on a formula simplification. DAG size of input: 512 DAG size of output: 371 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:55:11,314 WARN L227 SmtUtils]: Spent 15.62s on a formula simplification. DAG size of input: 623 DAG size of output: 443 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:55:17,240 WARN L227 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 545 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)