./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/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_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/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_e315d14b-9e9a-49d3-a07f-7a74484a43fc/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 76fb98768a82c6e881c4461160153969b956a6a73a8217d33a39b93921ba72b5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:33:23,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:33:23,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:33:23,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:33:23,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:33:23,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:33:23,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:33:23,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:33:23,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:33:23,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:33:23,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:33:23,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:33:23,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:33:23,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:33:23,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:33:23,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:33:23,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:33:23,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:33:23,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:33:23,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:33:23,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:33:23,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:33:23,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:33:23,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:33:23,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:33:23,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:33:23,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:33:23,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:33:23,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:33:23,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:33:23,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:33:23,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:33:23,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:33:23,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:33:23,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:33:23,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:33:23,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:33:23,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:33:23,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:33:23,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:33:23,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:33:23,454 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:33:23,480 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:33:23,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:33:23,481 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:33:23,481 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:33:23,482 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:33:23,482 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:33:23,482 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:33:23,482 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:33:23,483 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:33:23,483 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:33:23,483 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:33:23,483 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:33:23,483 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:33:23,484 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:33:23,484 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:33:23,484 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:33:23,484 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:33:23,485 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:33:23,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:33:23,486 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:33:23,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:33:23,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:33:23,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:33:23,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:33:23,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:33:23,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:33:23,487 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:33:23,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:33:23,488 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:33:23,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:33:23,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:33:23,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:33:23,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:33:23,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:33:23,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:33:23,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:33:23,490 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:33:23,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:33:23,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:33:23,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:33:23,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:33:23,491 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_e315d14b-9e9a-49d3-a07f-7a74484a43fc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76fb98768a82c6e881c4461160153969b956a6a73a8217d33a39b93921ba72b5 [2021-11-23 02:33:23,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:33:23,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:33:23,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:33:23,831 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:33:23,832 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:33:23,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec1_product34.cil.c [2021-11-23 02:33:23,915 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/data/b6b0b3000/07bcf38092f748a5a32bd76cd823a22d/FLAG0cb979134 [2021-11-23 02:33:24,639 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:33:24,640 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/sv-benchmarks/c/product-lines/email_spec1_product34.cil.c [2021-11-23 02:33:24,674 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/data/b6b0b3000/07bcf38092f748a5a32bd76cd823a22d/FLAG0cb979134 [2021-11-23 02:33:24,811 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/data/b6b0b3000/07bcf38092f748a5a32bd76cd823a22d [2021-11-23 02:33:24,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:33:24,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:33:24,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:33:24,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:33:24,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:33:24,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:33:24" (1/1) ... [2021-11-23 02:33:24,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44121dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:24, skipping insertion in model container [2021-11-23 02:33:24,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:33:24" (1/1) ... [2021-11-23 02:33:24,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:33:24,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:33:25,162 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_e315d14b-9e9a-49d3-a07f-7a74484a43fc/sv-benchmarks/c/product-lines/email_spec1_product34.cil.c[2480,2493] [2021-11-23 02:33:25,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:33:25,576 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:33:25,593 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_e315d14b-9e9a-49d3-a07f-7a74484a43fc/sv-benchmarks/c/product-lines/email_spec1_product34.cil.c[2480,2493] [2021-11-23 02:33:25,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:33:25,757 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:33:25,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:25 WrapperNode [2021-11-23 02:33:25,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:33:25,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:33:25,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:33:25,760 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:33:25,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:25" (1/1) ... [2021-11-23 02:33:25,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:25" (1/1) ... [2021-11-23 02:33:25,902 INFO L137 Inliner]: procedures = 134, calls = 237, calls flagged for inlining = 62, calls inlined = 59, statements flattened = 1096 [2021-11-23 02:33:25,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:33:25,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:33:25,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:33:25,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:33:25,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:25" (1/1) ... [2021-11-23 02:33:25,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:25" (1/1) ... [2021-11-23 02:33:25,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:25" (1/1) ... [2021-11-23 02:33:25,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:25" (1/1) ... [2021-11-23 02:33:25,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:25" (1/1) ... [2021-11-23 02:33:26,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:25" (1/1) ... [2021-11-23 02:33:26,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:25" (1/1) ... [2021-11-23 02:33:26,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:33:26,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:33:26,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:33:26,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:33:26,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:25" (1/1) ... [2021-11-23 02:33:26,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:33:26,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:33:26,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:33:26,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:33:26,184 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 02:33:26,184 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 02:33:26,184 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 02:33:26,184 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 02:33:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 02:33:26,185 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 02:33:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 02:33:26,185 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 02:33:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 02:33:26,185 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 02:33:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:33:26,185 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:33:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:33:26,186 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:33:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:33:26,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:33:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:33:26,186 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:33:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 02:33:26,186 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 02:33:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 02:33:26,187 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 02:33:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:33:26,187 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:33:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:33:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:33:26,188 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:33:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:33:26,188 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:33:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:33:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 02:33:26,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 02:33:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 02:33:26,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 02:33:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 02:33:26,190 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 02:33:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:33:26,191 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:33:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:33:26,191 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:33:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:33:26,191 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:33:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2021-11-23 02:33:26,192 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2021-11-23 02:33:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 02:33:26,193 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 02:33:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:33:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:33:26,195 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 02:33:26,197 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 02:33:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:33:26,197 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:33:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:33:26,198 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:33:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:33:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:33:26,199 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:33:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 02:33:26,199 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 02:33:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:33:26,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:33:26,428 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:33:26,430 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:33:27,625 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:33:28,280 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:33:28,280 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:33:28,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:33:28 BoogieIcfgContainer [2021-11-23 02:33:28,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:33:28,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:33:28,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:33:28,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:33:28,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:33:24" (1/3) ... [2021-11-23 02:33:28,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b1b56c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:33:28, skipping insertion in model container [2021-11-23 02:33:28,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:25" (2/3) ... [2021-11-23 02:33:28,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b1b56c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:33:28, skipping insertion in model container [2021-11-23 02:33:28,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:33:28" (3/3) ... [2021-11-23 02:33:28,298 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product34.cil.c [2021-11-23 02:33:28,310 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:33:28,310 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:33:28,393 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:33:28,402 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 02:33:28,402 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:33:28,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 130 states have (on average 1.2923076923076924) internal successors, (168), 135 states have internal predecessors, (168), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2021-11-23 02:33:28,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 02:33:28,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:28,451 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:28,452 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:28,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:28,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1302752910, now seen corresponding path program 1 times [2021-11-23 02:33:28,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:28,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738325470] [2021-11-23 02:33:28,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:28,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:28,930 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:33:28,931 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:28,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738325470] [2021-11-23 02:33:28,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738325470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:28,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:28,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:33:28,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610847489] [2021-11-23 02:33:28,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:28,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:33:28,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:28,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:33:28,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:33:29,007 INFO L87 Difference]: Start difference. First operand has 231 states, 130 states have (on average 1.2923076923076924) internal successors, (168), 135 states have internal predecessors, (168), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:33:29,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:29,335 INFO L93 Difference]: Finished difference Result 370 states and 491 transitions. [2021-11-23 02:33:29,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:33:29,345 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2021-11-23 02:33:29,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:29,381 INFO L225 Difference]: With dead ends: 370 [2021-11-23 02:33:29,385 INFO L226 Difference]: Without dead ends: 228 [2021-11-23 02:33:29,401 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 02:33:29,407 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:29,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 263 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:33:29,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-23 02:33:29,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-11-23 02:33:29,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 128 states have (on average 1.265625) internal successors, (162), 132 states have internal predecessors, (162), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2021-11-23 02:33:29,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 303 transitions. [2021-11-23 02:33:29,539 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 303 transitions. Word has length 71 [2021-11-23 02:33:29,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:29,542 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 303 transitions. [2021-11-23 02:33:29,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:33:29,542 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 303 transitions. [2021-11-23 02:33:29,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 02:33:29,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:29,549 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:29,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:33:29,550 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:29,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:29,551 INFO L85 PathProgramCache]: Analyzing trace with hash -820717606, now seen corresponding path program 1 times [2021-11-23 02:33:29,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:29,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279953470] [2021-11-23 02:33:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:29,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:33:29,802 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:29,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279953470] [2021-11-23 02:33:29,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279953470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:29,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:29,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:33:29,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147156910] [2021-11-23 02:33:29,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:29,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:33:29,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:29,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:33:29,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:33:29,808 INFO L87 Difference]: Start difference. First operand 228 states and 303 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:33:30,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:30,103 INFO L93 Difference]: Finished difference Result 366 states and 476 transitions. [2021-11-23 02:33:30,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:33:30,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 72 [2021-11-23 02:33:30,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:30,109 INFO L225 Difference]: With dead ends: 366 [2021-11-23 02:33:30,110 INFO L226 Difference]: Without dead ends: 230 [2021-11-23 02:33:30,111 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 02:33:30,113 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:30,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 519 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:33:30,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-23 02:33:30,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2021-11-23 02:33:30,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 130 states have (on average 1.2615384615384615) internal successors, (164), 134 states have internal predecessors, (164), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2021-11-23 02:33:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 305 transitions. [2021-11-23 02:33:30,150 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 305 transitions. Word has length 72 [2021-11-23 02:33:30,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:30,151 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 305 transitions. [2021-11-23 02:33:30,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:33:30,152 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 305 transitions. [2021-11-23 02:33:30,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 02:33:30,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:30,158 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:30,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:33:30,159 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:30,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:30,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1992996637, now seen corresponding path program 1 times [2021-11-23 02:33:30,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:30,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329988070] [2021-11-23 02:33:30,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:30,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:33:30,323 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:30,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329988070] [2021-11-23 02:33:30,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329988070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:30,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:30,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:33:30,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478772959] [2021-11-23 02:33:30,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:30,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:33:30,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:30,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:33:30,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:33:30,332 INFO L87 Difference]: Start difference. First operand 230 states and 305 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:33:30,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:30,543 INFO L93 Difference]: Finished difference Result 495 states and 677 transitions. [2021-11-23 02:33:30,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:33:30,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2021-11-23 02:33:30,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:30,555 INFO L225 Difference]: With dead ends: 495 [2021-11-23 02:33:30,555 INFO L226 Difference]: Without dead ends: 283 [2021-11-23 02:33:30,557 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 02:33:30,567 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 59 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:30,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 538 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:33:30,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-23 02:33:30,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 278. [2021-11-23 02:33:30,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 164 states have (on average 1.3353658536585367) internal successors, (219), 168 states have internal predecessors, (219), 85 states have call successors, (85), 28 states have call predecessors, (85), 28 states have return successors, (84), 83 states have call predecessors, (84), 84 states have call successors, (84) [2021-11-23 02:33:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 388 transitions. [2021-11-23 02:33:30,640 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 388 transitions. Word has length 77 [2021-11-23 02:33:30,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:30,643 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 388 transitions. [2021-11-23 02:33:30,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:33:30,644 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 388 transitions. [2021-11-23 02:33:30,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 02:33:30,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:30,659 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:30,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:33:30,660 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:30,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:30,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1416426932, now seen corresponding path program 1 times [2021-11-23 02:33:30,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:30,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648697983] [2021-11-23 02:33:30,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:30,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:30,860 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:33:30,860 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:30,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648697983] [2021-11-23 02:33:30,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648697983] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:33:30,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241460816] [2021-11-23 02:33:30,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:30,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:33:30,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:33:30,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:33:30,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:33:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:31,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:33:31,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:33:31,531 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:33:31,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:33:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:33:31,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241460816] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:33:31,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1266647594] [2021-11-23 02:33:31,790 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2021-11-23 02:33:31,794 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:33:31,801 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:33:31,808 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:33:31,811 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:34:05,456 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:34:05,762 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 270 for LOIs [2021-11-23 02:34:07,905 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 238 for LOIs [2021-11-23 02:34:07,953 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 447 for LOIs [2021-11-23 02:34:08,242 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 272 for LOIs [2021-11-23 02:34:12,140 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 228 for LOIs [2021-11-23 02:34:12,202 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 280 for LOIs [2021-11-23 02:34:19,171 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 250 for LOIs [2021-11-23 02:34:19,314 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2021-11-23 02:34:19,380 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2021-11-23 02:34:21,327 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 255 for LOIs [2021-11-23 02:34:21,394 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:34:51,813 WARN L227 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 468 DAG size of output: 342 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:16,680 WARN L227 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 512 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:34,932 WARN L227 SmtUtils]: Spent 7.82s on a formula simplification. DAG size of input: 480 DAG size of output: 280 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:36:33,260 WARN L227 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 487 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:36:41,172 WARN L227 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 529 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:36:44,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1266647594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:36:44,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:36:44,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [4, 4, 4] total 59 [2021-11-23 02:36:44,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261485615] [2021-11-23 02:36:44,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:36:44,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-23 02:36:44,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:44,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-23 02:36:44,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=3262, Unknown=0, NotChecked=0, Total=3422 [2021-11-23 02:36:44,848 INFO L87 Difference]: Start difference. First operand 278 states and 388 transitions. Second operand has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 02:37:35,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:35,089 INFO L93 Difference]: Finished difference Result 642 states and 928 transitions. [2021-11-23 02:37:35,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-23 02:37:35,090 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 78 [2021-11-23 02:37:35,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:35,095 INFO L225 Difference]: With dead ends: 642 [2021-11-23 02:37:35,095 INFO L226 Difference]: Without dead ends: 382 [2021-11-23 02:37:35,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 167.3s TimeCoverageRelationStatistics Valid=210, Invalid=4212, Unknown=0, NotChecked=0, Total=4422 [2021-11-23 02:37:35,100 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 120 mSDsluCounter, 7905 mSDsCounter, 0 mSdLazyCounter, 8108 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 7919 SdHoareTripleChecker+Invalid, 8140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 8108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:35,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 7919 Invalid, 8140 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [32 Valid, 8108 Invalid, 0 Unknown, 0 Unchecked, 25.8s Time] [2021-11-23 02:37:35,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-23 02:37:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 340. [2021-11-23 02:37:35,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 209 states have (on average 1.325358851674641) internal successors, (277), 213 states have internal predecessors, (277), 95 states have call successors, (95), 38 states have call predecessors, (95), 35 states have return successors, (94), 90 states have call predecessors, (94), 94 states have call successors, (94) [2021-11-23 02:37:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 466 transitions. [2021-11-23 02:37:35,211 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 466 transitions. Word has length 78 [2021-11-23 02:37:35,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:37:35,212 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 466 transitions. [2021-11-23 02:37:35,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 02:37:35,213 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 466 transitions. [2021-11-23 02:37:35,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 02:37:35,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:37:35,217 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:37:35,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:37:35,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-23 02:37:35,431 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:37:35,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:37:35,431 INFO L85 PathProgramCache]: Analyzing trace with hash -380249906, now seen corresponding path program 1 times [2021-11-23 02:37:35,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:37:35,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315800283] [2021-11-23 02:37:35,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:35,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:37:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:35,587 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:37:35,587 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:37:35,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315800283] [2021-11-23 02:37:35,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315800283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:37:35,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:37:35,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:37:35,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223608573] [2021-11-23 02:37:35,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:37:35,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:37:35,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:37:35,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:37:35,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:37:35,591 INFO L87 Difference]: Start difference. First operand 340 states and 466 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 02:37:35,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:35,856 INFO L93 Difference]: Finished difference Result 782 states and 1112 transitions. [2021-11-23 02:37:35,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:37:35,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2021-11-23 02:37:35,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:35,865 INFO L225 Difference]: With dead ends: 782 [2021-11-23 02:37:35,865 INFO L226 Difference]: Without dead ends: 468 [2021-11-23 02:37:35,867 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 02:37:35,870 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 57 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:35,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 545 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:37:35,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-11-23 02:37:36,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 461. [2021-11-23 02:37:36,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 299 states have (on average 1.394648829431438) internal successors, (417), 303 states have internal predecessors, (417), 126 states have call successors, (126), 38 states have call predecessors, (126), 35 states have return successors, (125), 121 states have call predecessors, (125), 125 states have call successors, (125) [2021-11-23 02:37:36,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 668 transitions. [2021-11-23 02:37:36,030 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 668 transitions. Word has length 83 [2021-11-23 02:37:36,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:37:36,031 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 668 transitions. [2021-11-23 02:37:36,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 02:37:36,032 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 668 transitions. [2021-11-23 02:37:36,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-23 02:37:36,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:37:36,040 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:37:36,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:37:36,041 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:37:36,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:37:36,041 INFO L85 PathProgramCache]: Analyzing trace with hash -16394758, now seen corresponding path program 1 times [2021-11-23 02:37:36,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:37:36,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737145277] [2021-11-23 02:37:36,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:36,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:37:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:37:36,166 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:37:36,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737145277] [2021-11-23 02:37:36,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737145277] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:37:36,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534813769] [2021-11-23 02:37:36,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:36,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:37:36,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:37:36,168 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:37:36,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:37:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:36,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:37:36,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:37:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:37:36,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:37:36,874 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:37:36,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534813769] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:37:36,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [691651411] [2021-11-23 02:37:36,886 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2021-11-23 02:37:36,886 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:37:36,889 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:37:36,889 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:37:36,890 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:38:13,718 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2021-11-23 02:38:14,031 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 266 for LOIs [2021-11-23 02:38:16,149 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2021-11-23 02:38:16,191 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2021-11-23 02:38:16,453 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 266 for LOIs [2021-11-23 02:38:19,722 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 224 for LOIs [2021-11-23 02:38:19,770 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 276 for LOIs [2021-11-23 02:38:26,476 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 246 for LOIs [2021-11-23 02:38:26,568 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 243 for LOIs [2021-11-23 02:38:26,633 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2021-11-23 02:38:28,414 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 251 for LOIs [2021-11-23 02:38:28,478 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:38:58,156 WARN L227 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 468 DAG size of output: 342 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:39:24,511 WARN L227 SmtUtils]: Spent 7.03s on a formula simplification. DAG size of input: 512 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:39:46,945 WARN L227 SmtUtils]: Spent 7.20s on a formula simplification. DAG size of input: 476 DAG size of output: 276 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:40:44,256 WARN L227 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 483 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:40:51,735 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 525 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:40:55,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [691651411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:40:55,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:40:55,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [4, 4, 4] total 63 [2021-11-23 02:40:55,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941999766] [2021-11-23 02:40:55,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:40:55,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-23 02:40:55,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:40:55,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-23 02:40:55,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3718, Unknown=0, NotChecked=0, Total=3906 [2021-11-23 02:40:55,275 INFO L87 Difference]: Start difference. First operand 461 states and 668 transitions. Second operand has 58 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 35 states have internal predecessors, (44), 18 states have call successors, (18), 12 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:42:21,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:21,822 INFO L93 Difference]: Finished difference Result 973 states and 1460 transitions. [2021-11-23 02:42:21,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-23 02:42:21,823 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 35 states have internal predecessors, (44), 18 states have call successors, (18), 12 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 84 [2021-11-23 02:42:21,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:21,829 INFO L225 Difference]: With dead ends: 973 [2021-11-23 02:42:21,829 INFO L226 Difference]: Without dead ends: 613 [2021-11-23 02:42:21,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1393 ImplicationChecksByTransitivity, 209.0s TimeCoverageRelationStatistics Valid=327, Invalid=5835, Unknown=0, NotChecked=0, Total=6162 [2021-11-23 02:42:21,834 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 337 mSDsluCounter, 6890 mSDsCounter, 0 mSdLazyCounter, 8018 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 6912 SdHoareTripleChecker+Invalid, 8076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 8018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:21,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 6912 Invalid, 8076 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [58 Valid, 8018 Invalid, 0 Unknown, 0 Unchecked, 23.7s Time] [2021-11-23 02:42:21,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-11-23 02:42:21,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 477. [2021-11-23 02:42:21,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 311 states have (on average 1.3987138263665595) internal successors, (435), 317 states have internal predecessors, (435), 129 states have call successors, (129), 39 states have call predecessors, (129), 36 states have return successors, (128), 122 states have call predecessors, (128), 128 states have call successors, (128) [2021-11-23 02:42:21,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 692 transitions. [2021-11-23 02:42:21,978 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 692 transitions. Word has length 84 [2021-11-23 02:42:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:21,979 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 692 transitions. [2021-11-23 02:42:21,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 35 states have internal predecessors, (44), 18 states have call successors, (18), 12 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:42:21,980 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 692 transitions. [2021-11-23 02:42:21,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 02:42:21,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:21,983 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:22,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:42:22,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:42:22,199 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:42:22,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:22,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1972098494, now seen corresponding path program 1 times [2021-11-23 02:42:22,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:22,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338391265] [2021-11-23 02:42:22,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:22,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:22,374 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:42:22,378 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:22,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338391265] [2021-11-23 02:42:22,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338391265] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:42:22,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372074584] [2021-11-23 02:42:22,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:22,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:42:22,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:42:22,395 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:42:22,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e315d14b-9e9a-49d3-a07f-7a74484a43fc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:42:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:22,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:42:22,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:42:22,910 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:42:22,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:42:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:42:23,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372074584] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:42:23,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1055147789] [2021-11-23 02:42:23,114 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2021-11-23 02:42:23,115 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:42:23,115 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:42:23,116 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:42:23,116 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:43:23,919 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:43:24,173 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2021-11-23 02:43:24,242 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 235 for LOIs [2021-11-23 02:43:24,310 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 222 for LOIs [2021-11-23 02:43:24,380 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 447 for LOIs [2021-11-23 02:43:24,653 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:43:50,685 WARN L227 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 468 DAG size of output: 342 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:44:14,420 WARN L227 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 512 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:44:29,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1055147789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:44:29,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:44:29,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2021-11-23 02:44:29,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647672931] [2021-11-23 02:44:29,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:44:29,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-23 02:44:29,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:44:29,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-23 02:44:29,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 02:44:29,957 INFO L87 Difference]: Start difference. First operand 477 states and 692 transitions. Second operand has 29 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17)