./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P --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 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:38:34,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:38:34,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:38:34,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:38:34,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:38:34,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:38:34,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:38:34,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:38:34,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:38:34,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:38:34,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:38:34,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:38:34,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:38:34,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:38:34,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:38:34,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:38:34,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:38:34,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:38:34,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:38:34,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:38:34,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:38:34,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:38:34,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:38:34,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:38:34,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:38:34,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:38:34,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:38:34,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:38:34,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:38:34,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:38:34,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:38:34,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:38:34,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:38:34,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:38:34,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:38:34,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:38:34,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:38:34,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:38:34,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:38:34,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:38:34,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:38:34,468 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:38:34,512 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:38:34,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:38:34,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:38:34,513 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:38:34,513 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:38:34,514 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:38:34,514 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:38:34,514 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:38:34,514 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:38:34,515 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:38:34,515 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:38:34,515 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:38:34,515 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:38:34,515 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:38:34,516 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:38:34,516 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:38:34,516 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:38:34,516 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:38:34,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:38:34,517 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:38:34,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:38:34,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:38:34,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:38:34,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:38:34,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:38:34,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:38:34,519 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:38:34,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:38:34,519 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:38:34,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:38:34,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:38:34,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:38:34,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:38:34,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:38:34,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:38:34,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:38:34,521 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:38:34,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:38:34,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:38:34,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:38:34,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:38:34,522 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_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 [2021-11-21 01:38:34,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:38:34,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:38:34,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:38:34,842 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:38:34,843 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:38:34,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2021-11-21 01:38:34,907 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P/data/318160e59/15206292384848a7b95473267a454c9f/FLAG1778c99e0 [2021-11-21 01:38:35,577 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:38:35,578 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2021-11-21 01:38:35,601 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P/data/318160e59/15206292384848a7b95473267a454c9f/FLAG1778c99e0 [2021-11-21 01:38:35,750 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P/data/318160e59/15206292384848a7b95473267a454c9f [2021-11-21 01:38:35,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:38:35,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:38:35,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:38:35,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:38:35,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:38:35,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:38:35" (1/1) ... [2021-11-21 01:38:35,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44853b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:35, skipping insertion in model container [2021-11-21 01:38:35,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:38:35" (1/1) ... [2021-11-21 01:38:35,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:38:35,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:38:36,612 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_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2021-11-21 01:38:36,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:38:36,627 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:38:36,743 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_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2021-11-21 01:38:36,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:38:36,787 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:38:36,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:36 WrapperNode [2021-11-21 01:38:36,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:38:36,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:38:36,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:38:36,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:38:36,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:36" (1/1) ... [2021-11-21 01:38:36,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:36" (1/1) ... [2021-11-21 01:38:36,981 INFO L137 Inliner]: procedures = 151, calls = 280, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1299 [2021-11-21 01:38:36,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:38:36,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:38:36,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:38:36,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:38:36,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:36" (1/1) ... [2021-11-21 01:38:36,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:36" (1/1) ... [2021-11-21 01:38:37,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:36" (1/1) ... [2021-11-21 01:38:37,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:36" (1/1) ... [2021-11-21 01:38:37,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:36" (1/1) ... [2021-11-21 01:38:37,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:36" (1/1) ... [2021-11-21 01:38:37,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:36" (1/1) ... [2021-11-21 01:38:37,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:38:37,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:38:37,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:38:37,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:38:37,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:36" (1/1) ... [2021-11-21 01:38:37,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:38:37,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:37,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:38:37,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:38:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-21 01:38:37,198 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-21 01:38:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-21 01:38:37,198 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-21 01:38:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-21 01:38:37,199 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-21 01:38:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-21 01:38:37,199 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-21 01:38:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-21 01:38:37,199 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-21 01:38:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-21 01:38:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-21 01:38:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-21 01:38:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-21 01:38:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-21 01:38:37,201 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-21 01:38:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-21 01:38:37,201 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-21 01:38:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-21 01:38:37,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-21 01:38:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-21 01:38:37,202 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-21 01:38:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-21 01:38:37,202 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-21 01:38:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-21 01:38:37,202 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-21 01:38:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-21 01:38:37,203 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-21 01:38:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-21 01:38:37,203 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-21 01:38:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-21 01:38:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-21 01:38:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-21 01:38:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-21 01:38:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-21 01:38:37,205 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-21 01:38:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-21 01:38:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-21 01:38:37,205 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-21 01:38:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-21 01:38:37,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-21 01:38:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-21 01:38:37,206 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-21 01:38:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-21 01:38:37,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-21 01:38:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-21 01:38:37,207 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-21 01:38:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:38:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-21 01:38:37,207 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-21 01:38:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-21 01:38:37,208 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-21 01:38:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-21 01:38:37,208 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-21 01:38:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-21 01:38:37,208 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-21 01:38:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-21 01:38:37,209 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-21 01:38:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-21 01:38:37,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-21 01:38:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-21 01:38:37,210 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-21 01:38:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-21 01:38:37,210 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-21 01:38:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-21 01:38:37,210 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-21 01:38:37,211 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-21 01:38:37,211 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-21 01:38:37,211 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-21 01:38:37,211 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-21 01:38:37,211 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-21 01:38:37,211 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-21 01:38:37,212 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-21 01:38:37,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-21 01:38:37,212 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-21 01:38:37,212 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-21 01:38:37,212 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-21 01:38:37,213 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-21 01:38:37,213 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-21 01:38:37,213 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-21 01:38:37,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:38:37,213 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-21 01:38:37,213 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-21 01:38:37,214 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-21 01:38:37,214 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-21 01:38:37,214 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-21 01:38:37,214 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-21 01:38:37,214 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-21 01:38:37,215 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-21 01:38:37,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:38:37,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:38:37,528 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:38:37,531 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:38:38,685 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:38:39,351 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:38:39,351 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:38:39,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:38:39 BoogieIcfgContainer [2021-11-21 01:38:39,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:38:39,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:38:39,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:38:39,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:38:39,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:38:35" (1/3) ... [2021-11-21 01:38:39,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c60523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:38:39, skipping insertion in model container [2021-11-21 01:38:39,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:36" (2/3) ... [2021-11-21 01:38:39,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c60523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:38:39, skipping insertion in model container [2021-11-21 01:38:39,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:38:39" (3/3) ... [2021-11-21 01:38:39,369 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_productSimulator.cil.c [2021-11-21 01:38:39,379 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:38:39,380 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:38:39,453 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:38:39,460 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 [2021-11-21 01:38:39,461 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:38:39,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2021-11-21 01:38:39,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-21 01:38:39,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:39,523 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:39,524 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:39,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:39,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1058820502, now seen corresponding path program 1 times [2021-11-21 01:38:39,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:39,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734066681] [2021-11-21 01:38:39,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:39,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-21 01:38:40,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:40,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734066681] [2021-11-21 01:38:40,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734066681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:40,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:40,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:38:40,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463692143] [2021-11-21 01:38:40,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:40,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:38:40,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:40,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:38:40,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:38:40,199 INFO L87 Difference]: Start difference. First operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 01:38:40,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:40,601 INFO L93 Difference]: Finished difference Result 726 states and 994 transitions. [2021-11-21 01:38:40,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:38:40,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 110 [2021-11-21 01:38:40,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:40,633 INFO L225 Difference]: With dead ends: 726 [2021-11-21 01:38:40,633 INFO L226 Difference]: Without dead ends: 374 [2021-11-21 01:38:40,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:38:40,651 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 6 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:40,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1371 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:38:40,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-21 01:38:40,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-11-21 01:38:40,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 221 states have (on average 1.2895927601809956) internal successors, (285), 240 states have internal predecessors, (285), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-21 01:38:40,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 502 transitions. [2021-11-21 01:38:40,800 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 502 transitions. Word has length 110 [2021-11-21 01:38:40,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:40,801 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 502 transitions. [2021-11-21 01:38:40,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 01:38:40,802 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 502 transitions. [2021-11-21 01:38:40,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-21 01:38:40,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:40,818 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:40,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:38:40,819 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:40,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:40,823 INFO L85 PathProgramCache]: Analyzing trace with hash 699274038, now seen corresponding path program 1 times [2021-11-21 01:38:40,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:40,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179808408] [2021-11-21 01:38:40,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:40,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:41,015 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-21 01:38:41,015 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:41,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179808408] [2021-11-21 01:38:41,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179808408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:41,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:41,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:38:41,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015940891] [2021-11-21 01:38:41,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:41,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:38:41,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:41,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:38:41,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:38:41,022 INFO L87 Difference]: Start difference. First operand 374 states and 502 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-21 01:38:41,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:41,207 INFO L93 Difference]: Finished difference Result 719 states and 973 transitions. [2021-11-21 01:38:41,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:38:41,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 121 [2021-11-21 01:38:41,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:41,215 INFO L225 Difference]: With dead ends: 719 [2021-11-21 01:38:41,215 INFO L226 Difference]: Without dead ends: 374 [2021-11-21 01:38:41,223 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 [2021-11-21 01:38:41,225 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 467 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:41,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 460 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:38:41,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-21 01:38:41,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-11-21 01:38:41,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 222 states have (on average 1.2747747747747749) internal successors, (283), 239 states have internal predecessors, (283), 107 states have call successors, (107), 44 states have call predecessors, (107), 44 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2021-11-21 01:38:41,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 496 transitions. [2021-11-21 01:38:41,292 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 496 transitions. Word has length 121 [2021-11-21 01:38:41,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:41,295 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 496 transitions. [2021-11-21 01:38:41,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-21 01:38:41,296 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 496 transitions. [2021-11-21 01:38:41,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-21 01:38:41,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:41,309 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:41,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:38:41,310 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:41,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:41,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1531973111, now seen corresponding path program 1 times [2021-11-21 01:38:41,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:41,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515345582] [2021-11-21 01:38:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:41,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-21 01:38:41,474 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:41,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515345582] [2021-11-21 01:38:41,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515345582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:41,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:41,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:38:41,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810704613] [2021-11-21 01:38:41,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:41,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:38:41,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:41,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:38:41,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:38:41,539 INFO L87 Difference]: Start difference. First operand 374 states and 496 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 01:38:41,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:41,812 INFO L93 Difference]: Finished difference Result 1052 states and 1418 transitions. [2021-11-21 01:38:41,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:38:41,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 117 [2021-11-21 01:38:41,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:41,827 INFO L225 Difference]: With dead ends: 1052 [2021-11-21 01:38:41,827 INFO L226 Difference]: Without dead ends: 707 [2021-11-21 01:38:41,829 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 [2021-11-21 01:38:41,837 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 468 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:41,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 963 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:38:41,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-11-21 01:38:41,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 705. [2021-11-21 01:38:41,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 418 states have (on average 1.2727272727272727) internal successors, (532), 448 states have internal predecessors, (532), 199 states have call successors, (199), 87 states have call predecessors, (199), 87 states have return successors, (210), 196 states have call predecessors, (210), 197 states have call successors, (210) [2021-11-21 01:38:41,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 941 transitions. [2021-11-21 01:38:41,923 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 941 transitions. Word has length 117 [2021-11-21 01:38:41,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:41,924 INFO L470 AbstractCegarLoop]: Abstraction has 705 states and 941 transitions. [2021-11-21 01:38:41,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 01:38:41,925 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 941 transitions. [2021-11-21 01:38:41,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-21 01:38:41,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:41,939 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:41,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:38:41,940 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:41,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:41,941 INFO L85 PathProgramCache]: Analyzing trace with hash 762482393, now seen corresponding path program 1 times [2021-11-21 01:38:41,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:41,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8355014] [2021-11-21 01:38:41,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:41,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-21 01:38:42,083 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:42,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8355014] [2021-11-21 01:38:42,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8355014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:42,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:42,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:38:42,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682890195] [2021-11-21 01:38:42,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:42,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:38:42,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:42,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:38:42,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:38:42,086 INFO L87 Difference]: Start difference. First operand 705 states and 941 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:38:42,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:42,237 INFO L93 Difference]: Finished difference Result 707 states and 942 transitions. [2021-11-21 01:38:42,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:38:42,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 123 [2021-11-21 01:38:42,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:42,244 INFO L225 Difference]: With dead ends: 707 [2021-11-21 01:38:42,244 INFO L226 Difference]: Without dead ends: 374 [2021-11-21 01:38:42,246 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 [2021-11-21 01:38:42,253 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 448 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:42,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 463 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:38:42,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-21 01:38:42,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-11-21 01:38:42,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 223 states have (on average 1.2556053811659194) internal successors, (280), 238 states have internal predecessors, (280), 105 states have call successors, (105), 45 states have call predecessors, (105), 45 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-21 01:38:42,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 489 transitions. [2021-11-21 01:38:42,297 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 489 transitions. Word has length 123 [2021-11-21 01:38:42,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:42,297 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 489 transitions. [2021-11-21 01:38:42,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:38:42,298 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 489 transitions. [2021-11-21 01:38:42,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-21 01:38:42,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:42,301 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:42,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:38:42,302 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:42,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:42,303 INFO L85 PathProgramCache]: Analyzing trace with hash -2010105046, now seen corresponding path program 1 times [2021-11-21 01:38:42,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:42,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418529277] [2021-11-21 01:38:42,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:42,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:42,441 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-21 01:38:42,441 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:42,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418529277] [2021-11-21 01:38:42,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418529277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:42,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:42,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:38:42,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371771078] [2021-11-21 01:38:42,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:42,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:38:42,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:42,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:38:42,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:38:42,445 INFO L87 Difference]: Start difference. First operand 374 states and 489 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:38:42,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:42,611 INFO L93 Difference]: Finished difference Result 709 states and 925 transitions. [2021-11-21 01:38:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:38:42,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 123 [2021-11-21 01:38:42,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:42,616 INFO L225 Difference]: With dead ends: 709 [2021-11-21 01:38:42,617 INFO L226 Difference]: Without dead ends: 377 [2021-11-21 01:38:42,618 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 [2021-11-21 01:38:42,620 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 431 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:42,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 448 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:38:42,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-21 01:38:42,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 371. [2021-11-21 01:38:42,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 223 states have (on average 1.2062780269058295) internal successors, (269), 233 states have internal predecessors, (269), 102 states have call successors, (102), 45 states have call predecessors, (102), 45 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) [2021-11-21 01:38:42,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 472 transitions. [2021-11-21 01:38:42,657 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 472 transitions. Word has length 123 [2021-11-21 01:38:42,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:42,658 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 472 transitions. [2021-11-21 01:38:42,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:38:42,658 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 472 transitions. [2021-11-21 01:38:42,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-21 01:38:42,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:42,662 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:42,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:38:42,663 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:42,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:42,664 INFO L85 PathProgramCache]: Analyzing trace with hash 384449674, now seen corresponding path program 1 times [2021-11-21 01:38:42,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:42,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139741851] [2021-11-21 01:38:42,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:42,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:42,769 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-21 01:38:42,769 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:42,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139741851] [2021-11-21 01:38:42,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139741851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:42,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:42,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:38:42,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961007652] [2021-11-21 01:38:42,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:42,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:38:42,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:42,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:38:42,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:38:42,773 INFO L87 Difference]: Start difference. First operand 371 states and 472 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 01:38:42,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:42,932 INFO L93 Difference]: Finished difference Result 585 states and 738 transitions. [2021-11-21 01:38:42,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:38:42,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 140 [2021-11-21 01:38:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:42,938 INFO L225 Difference]: With dead ends: 585 [2021-11-21 01:38:42,940 INFO L226 Difference]: Without dead ends: 373 [2021-11-21 01:38:42,945 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 [2021-11-21 01:38:42,947 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 0 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:42,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 837 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:38:42,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-11-21 01:38:42,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2021-11-21 01:38:42,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 225 states have (on average 1.2044444444444444) internal successors, (271), 235 states have internal predecessors, (271), 102 states have call successors, (102), 45 states have call predecessors, (102), 45 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) [2021-11-21 01:38:42,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 474 transitions. [2021-11-21 01:38:42,989 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 474 transitions. Word has length 140 [2021-11-21 01:38:42,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:42,993 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 474 transitions. [2021-11-21 01:38:42,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 01:38:42,994 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 474 transitions. [2021-11-21 01:38:42,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-21 01:38:42,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:42,998 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:42,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:38:42,999 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:42,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:42,999 INFO L85 PathProgramCache]: Analyzing trace with hash -2021297993, now seen corresponding path program 1 times [2021-11-21 01:38:43,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:43,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468599929] [2021-11-21 01:38:43,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:43,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:43,139 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-21 01:38:43,139 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:43,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468599929] [2021-11-21 01:38:43,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468599929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:43,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:43,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:38:43,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450759951] [2021-11-21 01:38:43,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:43,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:38:43,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:43,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:38:43,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:38:43,143 INFO L87 Difference]: Start difference. First operand 373 states and 474 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-21 01:38:43,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:43,315 INFO L93 Difference]: Finished difference Result 744 states and 971 transitions. [2021-11-21 01:38:43,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:38:43,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 140 [2021-11-21 01:38:43,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:43,321 INFO L225 Difference]: With dead ends: 744 [2021-11-21 01:38:43,321 INFO L226 Difference]: Without dead ends: 440 [2021-11-21 01:38:43,323 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 [2021-11-21 01:38:43,324 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 76 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:43,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 857 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:38:43,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-21 01:38:43,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 435. [2021-11-21 01:38:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 273 states have (on average 1.249084249084249) internal successors, (341), 283 states have internal predecessors, (341), 116 states have call successors, (116), 45 states have call predecessors, (116), 45 states have return successors, (115), 114 states have call predecessors, (115), 115 states have call successors, (115) [2021-11-21 01:38:43,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 572 transitions. [2021-11-21 01:38:43,392 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 572 transitions. Word has length 140 [2021-11-21 01:38:43,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:43,393 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 572 transitions. [2021-11-21 01:38:43,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-21 01:38:43,394 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 572 transitions. [2021-11-21 01:38:43,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-21 01:38:43,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:43,398 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:43,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:38:43,398 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:43,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:43,400 INFO L85 PathProgramCache]: Analyzing trace with hash 274493063, now seen corresponding path program 1 times [2021-11-21 01:38:43,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:43,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292492583] [2021-11-21 01:38:43,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:43,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-21 01:38:43,517 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:43,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292492583] [2021-11-21 01:38:43,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292492583] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:38:43,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675681630] [2021-11-21 01:38:43,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:43,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:43,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:43,521 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:38:43,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf049b5-0a18-4b13-9a06-3e6cb1b84cdd/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:38:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:43,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:38:43,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:44,416 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-21 01:38:44,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:38:44,837 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-21 01:38:44,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675681630] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:38:44,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1063372991] [2021-11-21 01:38:44,869 INFO L159 IcfgInterpreter]: Started Sifa with 116 locations of interest [2021-11-21 01:38:44,869 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:38:44,877 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:38:44,884 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:38:44,884 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:45:48,738 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 489 for LOIs [2021-11-21 01:46:09,642 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 495 for LOIs [2021-11-21 01:46:31,963 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 461 for LOIs [2021-11-21 01:46:36,529 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 489 for LOIs [2021-11-21 01:46:58,724 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 437 for LOIs [2021-11-21 01:47:03,365 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 440 for LOIs [2021-11-21 01:47:10,333 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:49:03,955 WARN L227 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 562 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:49:13,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1063372991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:13,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:49:13,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [4, 4, 4] total 61 [2021-11-21 01:49:13,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65223400] [2021-11-21 01:49:13,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:13,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-21 01:49:13,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:13,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-21 01:49:13,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=3401, Unknown=0, NotChecked=0, Total=3660 [2021-11-21 01:49:13,372 INFO L87 Difference]: Start difference. First operand 435 states and 572 transitions. Second operand has 56 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 40 states have internal predecessors, (74), 16 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (24), 18 states have call predecessors, (24), 16 states have call successors, (24) [2021-11-21 01:50:06,924 WARN L227 SmtUtils]: Spent 8.67s on a formula simplification. DAG size of input: 746 DAG size of output: 582 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:50:15,632 WARN L227 SmtUtils]: Spent 8.36s on a formula simplification. DAG size of input: 733 DAG size of output: 599 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:50:23,459 WARN L227 SmtUtils]: Spent 7.59s on a formula simplification. DAG size of input: 735 DAG size of output: 601 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)