./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_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_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/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_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/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_debe0c54-d106-449c-b1da-17e2bb7b72fc/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 a46e94d21677d8e787ff51041171bb0d6a97c638f1cb1f2181c1b14c15718344 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:53:52,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:53:52,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:53:52,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:53:52,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:53:52,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:53:52,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:53:52,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:53:52,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:53:52,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:53:52,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:53:52,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:53:52,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:53:52,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:53:52,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:53:52,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:53:52,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:53:52,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:53:52,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:53:52,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:53:52,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:53:52,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:53:52,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:53:52,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:53:52,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:53:52,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:53:52,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:53:52,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:53:52,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:53:52,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:53:52,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:53:52,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:53:52,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:53:52,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:53:52,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:53:52,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:53:52,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:53:52,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:53:52,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:53:52,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:53:52,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:53:52,954 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:53:53,001 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:53:53,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:53:53,003 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:53:53,003 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:53:53,004 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:53:53,005 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:53:53,005 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:53:53,005 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:53:53,006 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:53:53,006 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:53:53,007 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:53:53,008 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:53:53,008 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:53:53,008 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:53:53,009 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:53:53,009 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:53:53,009 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:53:53,010 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:53:53,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:53:53,011 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:53:53,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:53:53,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:53:53,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:53:53,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:53:53,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:53:53,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:53:53,015 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:53:53,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:53:53,016 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:53:53,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:53:53,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:53:53,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:53:53,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:53:53,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:53:53,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:53:53,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:53:53,019 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:53:53,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:53:53,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:53:53,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:53:53,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:53:53,021 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_debe0c54-d106-449c-b1da-17e2bb7b72fc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a46e94d21677d8e787ff51041171bb0d6a97c638f1cb1f2181c1b14c15718344 [2021-11-20 23:53:53,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:53:53,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:53:53,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:53:53,473 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:53:53,474 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:53:53,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c [2021-11-20 23:53:53,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/data/4521a9dae/0fc70d364c4a45828da6ca06dce85d81/FLAG26a19ea1b [2021-11-20 23:53:54,378 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:53:54,379 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c [2021-11-20 23:53:54,409 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/data/4521a9dae/0fc70d364c4a45828da6ca06dce85d81/FLAG26a19ea1b [2021-11-20 23:53:54,500 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/data/4521a9dae/0fc70d364c4a45828da6ca06dce85d81 [2021-11-20 23:53:54,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:53:54,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:53:54,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:53:54,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:53:54,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:53:54,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:53:54" (1/1) ... [2021-11-20 23:53:54,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@227cd2f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:54, skipping insertion in model container [2021-11-20 23:53:54,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:53:54" (1/1) ... [2021-11-20 23:53:54,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:53:54,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:53:55,165 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_debe0c54-d106-449c-b1da-17e2bb7b72fc/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c[31629,31642] [2021-11-20 23:53:55,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:53:55,314 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:53:55,410 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_debe0c54-d106-449c-b1da-17e2bb7b72fc/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c[31629,31642] [2021-11-20 23:53:55,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:53:55,605 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:53:55,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:55 WrapperNode [2021-11-20 23:53:55,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:53:55,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:53:55,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:53:55,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:53:55,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:55" (1/1) ... [2021-11-20 23:53:55,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:55" (1/1) ... [2021-11-20 23:53:55,770 INFO L137 Inliner]: procedures = 152, calls = 288, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1326 [2021-11-20 23:53:55,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:53:55,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:53:55,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:53:55,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:53:55,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:55" (1/1) ... [2021-11-20 23:53:55,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:55" (1/1) ... [2021-11-20 23:53:55,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:55" (1/1) ... [2021-11-20 23:53:55,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:55" (1/1) ... [2021-11-20 23:53:55,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:55" (1/1) ... [2021-11-20 23:53:55,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:55" (1/1) ... [2021-11-20 23:53:55,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:55" (1/1) ... [2021-11-20 23:53:55,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:53:55,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:53:55,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:53:55,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:53:55,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:55" (1/1) ... [2021-11-20 23:53:55,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:53:55,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:53:55,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:53:55,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:53:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-20 23:53:56,040 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-20 23:53:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-20 23:53:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-20 23:53:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-20 23:53:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-20 23:53:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-20 23:53:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-20 23:53:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-20 23:53:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-20 23:53:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-20 23:53:56,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-20 23:53:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-20 23:53:56,043 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-20 23:53:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-20 23:53:56,043 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-20 23:53:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-20 23:53:56,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-20 23:53:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-20 23:53:56,044 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-20 23:53:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-20 23:53:56,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-20 23:53:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-20 23:53:56,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-20 23:53:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-20 23:53:56,046 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-20 23:53:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-20 23:53:56,046 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-20 23:53:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-20 23:53:56,047 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-20 23:53:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-20 23:53:56,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-20 23:53:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-20 23:53:56,048 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-20 23:53:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-20 23:53:56,048 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-20 23:53:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-20 23:53:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-20 23:53:56,049 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-20 23:53:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-20 23:53:56,049 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-20 23:53:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-20 23:53:56,050 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-20 23:53:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-20 23:53:56,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-20 23:53:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-20 23:53:56,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-20 23:53:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:53:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-20 23:53:56,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-20 23:53:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-20 23:53:56,052 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-20 23:53:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-20 23:53:56,052 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-20 23:53:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-20 23:53:56,052 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-20 23:53:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-20 23:53:56,053 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-20 23:53:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-20 23:53:56,053 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-20 23:53:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-20 23:53:56,054 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-20 23:53:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-20 23:53:56,054 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-20 23:53:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-20 23:53:56,054 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-20 23:53:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-20 23:53:56,055 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-20 23:53:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-20 23:53:56,055 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-20 23:53:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-20 23:53:56,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-20 23:53:56,056 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-20 23:53:56,056 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-20 23:53:56,056 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-20 23:53:56,056 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-20 23:53:56,057 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-20 23:53:56,057 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-20 23:53:56,057 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-20 23:53:56,057 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-20 23:53:56,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:53:56,058 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-20 23:53:56,058 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-20 23:53:56,058 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-20 23:53:56,059 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-20 23:53:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-20 23:53:56,059 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-20 23:53:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-20 23:53:56,059 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-20 23:53:56,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:53:56,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:53:56,373 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:53:56,391 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:53:57,745 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:53:58,468 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:53:58,468 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 23:53:58,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:53:58 BoogieIcfgContainer [2021-11-20 23:53:58,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:53:58,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:53:58,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:53:58,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:53:58,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:53:54" (1/3) ... [2021-11-20 23:53:58,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22eea2c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:53:58, skipping insertion in model container [2021-11-20 23:53:58,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:55" (2/3) ... [2021-11-20 23:53:58,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22eea2c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:53:58, skipping insertion in model container [2021-11-20 23:53:58,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:53:58" (3/3) ... [2021-11-20 23:53:58,485 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_productSimulator.cil.c [2021-11-20 23:53:58,492 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:53:58,493 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:53:58,571 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:53:58,583 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 [2021-11-20 23:53:58,584 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:53:58,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2021-11-20 23:53:58,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-20 23:53:58,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:53:58,658 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:53:58,659 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:53:58,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:53:58,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1968310686, now seen corresponding path program 1 times [2021-11-20 23:53:58,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:53:58,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182316070] [2021-11-20 23:53:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:53:58,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:53:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:53:59,189 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 23:53:59,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:53:59,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182316070] [2021-11-20 23:53:59,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182316070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:53:59,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:53:59,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:53:59,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026561751] [2021-11-20 23:53:59,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:53:59,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:53:59,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:53:59,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:53:59,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:53:59,257 INFO L87 Difference]: Start difference. First operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-20 23:53:59,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:53:59,586 INFO L93 Difference]: Finished difference Result 602 states and 816 transitions. [2021-11-20 23:53:59,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:53:59,589 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 97 [2021-11-20 23:53:59,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:53:59,625 INFO L225 Difference]: With dead ends: 602 [2021-11-20 23:53:59,626 INFO L226 Difference]: Without dead ends: 377 [2021-11-20 23:53:59,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:53:59,647 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:53:59,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 464 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:53:59,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-20 23:53:59,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-20 23:53:59,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 223 states have (on average 1.3183856502242153) internal successors, (294), 242 states have internal predecessors, (294), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2021-11-20 23:53:59,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 513 transitions. [2021-11-20 23:53:59,777 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 513 transitions. Word has length 97 [2021-11-20 23:53:59,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:53:59,779 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 513 transitions. [2021-11-20 23:53:59,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-20 23:53:59,780 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 513 transitions. [2021-11-20 23:53:59,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-20 23:53:59,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:53:59,789 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] [2021-11-20 23:53:59,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:53:59,790 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:53:59,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:53:59,791 INFO L85 PathProgramCache]: Analyzing trace with hash 474378777, now seen corresponding path program 1 times [2021-11-20 23:53:59,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:53:59,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257295498] [2021-11-20 23:53:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:53:59,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:53:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:00,003 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 23:54:00,004 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:54:00,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257295498] [2021-11-20 23:54:00,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257295498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:54:00,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:54:00,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:54:00,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446985588] [2021-11-20 23:54:00,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:54:00,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:54:00,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:54:00,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:54:00,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:54:00,014 INFO L87 Difference]: Start difference. First operand 377 states and 513 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-20 23:54:00,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:54:00,300 INFO L93 Difference]: Finished difference Result 598 states and 796 transitions. [2021-11-20 23:54:00,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:54:00,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 98 [2021-11-20 23:54:00,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:54:00,348 INFO L225 Difference]: With dead ends: 598 [2021-11-20 23:54:00,348 INFO L226 Difference]: Without dead ends: 379 [2021-11-20 23:54:00,350 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 [2021-11-20 23:54:00,352 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 0 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:54:00,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 921 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:54:00,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-11-20 23:54:00,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2021-11-20 23:54:00,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 225 states have (on average 1.3155555555555556) internal successors, (296), 244 states have internal predecessors, (296), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2021-11-20 23:54:00,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 515 transitions. [2021-11-20 23:54:00,397 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 515 transitions. Word has length 98 [2021-11-20 23:54:00,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:54:00,398 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 515 transitions. [2021-11-20 23:54:00,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-20 23:54:00,398 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 515 transitions. [2021-11-20 23:54:00,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 23:54:00,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:00,407 INFO L514 BasicCegarLoop]: trace histogram [8, 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] [2021-11-20 23:54:00,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:54:00,407 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:54:00,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash 897570154, now seen corresponding path program 1 times [2021-11-20 23:54:00,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:54:00,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551984965] [2021-11-20 23:54:00,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:00,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:54:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 23:54:00,529 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:54:00,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551984965] [2021-11-20 23:54:00,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551984965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:54:00,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:54:00,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:54:00,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725986323] [2021-11-20 23:54:00,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:54:00,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:54:00,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:54:00,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:54:00,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:54:00,533 INFO L87 Difference]: Start difference. First operand 379 states and 515 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-20 23:54:00,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:54:00,791 INFO L93 Difference]: Finished difference Result 757 states and 1044 transitions. [2021-11-20 23:54:00,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:54:00,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 103 [2021-11-20 23:54:00,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:54:00,796 INFO L225 Difference]: With dead ends: 757 [2021-11-20 23:54:00,797 INFO L226 Difference]: Without dead ends: 446 [2021-11-20 23:54:00,799 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 [2021-11-20 23:54:00,800 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 84 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:54:00,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 931 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:54:00,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-20 23:54:00,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 441. [2021-11-20 23:54:00,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 273 states have (on average 1.3663003663003663) internal successors, (373), 294 states have internal predecessors, (373), 124 states have call successors, (124), 43 states have call predecessors, (124), 43 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2021-11-20 23:54:00,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 620 transitions. [2021-11-20 23:54:00,876 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 620 transitions. Word has length 103 [2021-11-20 23:54:00,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:54:00,877 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 620 transitions. [2021-11-20 23:54:00,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-20 23:54:00,878 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 620 transitions. [2021-11-20 23:54:00,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-20 23:54:00,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:00,885 INFO L514 BasicCegarLoop]: trace histogram [8, 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] [2021-11-20 23:54:00,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:54:00,886 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:54:00,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:00,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1577221936, now seen corresponding path program 1 times [2021-11-20 23:54:00,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:54:00,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727174838] [2021-11-20 23:54:00,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:00,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:54:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:01,081 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 23:54:01,086 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:54:01,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727174838] [2021-11-20 23:54:01,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727174838] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:54:01,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367511546] [2021-11-20 23:54:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:01,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:54:01,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:54:01,092 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:54:01,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:54:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:01,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:54:01,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:54:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-20 23:54:01,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:54:01,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367511546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:54:01,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:54:01,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-20 23:54:01,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324425619] [2021-11-20 23:54:01,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:54:01,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:54:01,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:54:01,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:54:01,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:54:01,983 INFO L87 Difference]: Start difference. First operand 441 states and 620 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:54:02,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:54:02,127 INFO L93 Difference]: Finished difference Result 859 states and 1224 transitions. [2021-11-20 23:54:02,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:54:02,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 104 [2021-11-20 23:54:02,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:54:02,136 INFO L225 Difference]: With dead ends: 859 [2021-11-20 23:54:02,136 INFO L226 Difference]: Without dead ends: 439 [2021-11-20 23:54:02,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:54:02,147 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 420 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:54:02,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 447 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:54:02,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-20 23:54:02,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-11-20 23:54:02,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 273 states have (on average 1.3443223443223444) internal successors, (367), 292 states have internal predecessors, (367), 121 states have call successors, (121), 44 states have call predecessors, (121), 44 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2021-11-20 23:54:02,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 608 transitions. [2021-11-20 23:54:02,183 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 608 transitions. Word has length 104 [2021-11-20 23:54:02,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:54:02,184 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 608 transitions. [2021-11-20 23:54:02,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:54:02,185 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 608 transitions. [2021-11-20 23:54:02,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-20 23:54:02,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:02,196 INFO L514 BasicCegarLoop]: trace histogram [8, 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] [2021-11-20 23:54:02,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:54:02,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:54:02,404 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:54:02,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:02,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1981110176, now seen corresponding path program 1 times [2021-11-20 23:54:02,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:54:02,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184328682] [2021-11-20 23:54:02,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:02,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:54:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:02,547 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 23:54:02,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:54:02,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184328682] [2021-11-20 23:54:02,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184328682] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:54:02,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446676045] [2021-11-20 23:54:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:02,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:54:02,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:54:02,555 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:54:02,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:54:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:02,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:54:02,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:54:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 23:54:03,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:54:03,565 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 23:54:03,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446676045] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:54:03,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [268545507] [2021-11-20 23:54:03,597 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2021-11-20 23:54:03,597 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:54:03,605 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:54:03,613 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:54:03,614 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:57:13,901 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2021-11-20 23:57:19,713 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:57:27,066 WARN L227 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:58:00,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [268545507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:58:00,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:58:00,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 28 [2021-11-20 23:58:00,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219589923] [2021-11-20 23:58:00,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:58:00,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-20 23:58:00,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:00,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-20 23:58:00,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2021-11-20 23:58:00,521 INFO L87 Difference]: Start difference. First operand 439 states and 608 transitions. Second operand has 23 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2021-11-20 23:58:08,085 WARN L227 SmtUtils]: Spent 7.28s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:58:15,551 WARN L227 SmtUtils]: Spent 7.19s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:58:23,005 WARN L227 SmtUtils]: Spent 7.18s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:58:30,963 WARN L227 SmtUtils]: Spent 7.62s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:58:38,196 WARN L227 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:58:45,788 WARN L227 SmtUtils]: Spent 7.24s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:58:53,033 WARN L227 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:59:00,816 WARN L227 SmtUtils]: Spent 7.46s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:59:13,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:59:13,417 INFO L93 Difference]: Finished difference Result 874 states and 1200 transitions. [2021-11-20 23:59:13,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 23:59:13,418 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 113 [2021-11-20 23:59:13,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:59:13,422 INFO L225 Difference]: With dead ends: 874 [2021-11-20 23:59:13,423 INFO L226 Difference]: Without dead ends: 467 [2021-11-20 23:59:13,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 107.6s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 23:59:13,426 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 118 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:59:13,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 2557 Invalid, 1245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-11-20 23:59:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-11-20 23:59:13,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 459. [2021-11-20 23:59:13,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 287 states have (on average 1.3344947735191637) internal successors, (383), 306 states have internal predecessors, (383), 121 states have call successors, (121), 50 states have call predecessors, (121), 50 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2021-11-20 23:59:13,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 624 transitions. [2021-11-20 23:59:13,505 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 624 transitions. Word has length 113 [2021-11-20 23:59:13,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:59:13,505 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 624 transitions. [2021-11-20 23:59:13,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2021-11-20 23:59:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 624 transitions. [2021-11-20 23:59:13,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-20 23:59:13,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:59:13,510 INFO L514 BasicCegarLoop]: trace histogram [8, 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] [2021-11-20 23:59:13,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:59:13,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:59:13,730 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:59:13,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:59:13,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1483523218, now seen corresponding path program 1 times [2021-11-20 23:59:13,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:59:13,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016349770] [2021-11-20 23:59:13,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:13,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:59:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 23:59:13,847 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:59:13,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016349770] [2021-11-20 23:59:13,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016349770] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:59:13,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460365600] [2021-11-20 23:59:13,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:13,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:59:13,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:59:13,866 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:59:13,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:59:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:14,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:59:14,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:59:14,541 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 23:59:14,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:59:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 23:59:14,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460365600] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:59:14,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1075851413] [2021-11-20 23:59:14,902 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2021-11-20 23:59:14,902 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:59:14,904 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:59:14,904 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:59:14,904 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:02:45,537 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2021-11-21 00:02:51,398 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:03:30,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1075851413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:30,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:03:30,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2021-11-21 00:03:30,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167749815] [2021-11-21 00:03:30,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:30,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-21 00:03:30,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:30,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-21 00:03:30,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2021-11-21 00:03:30,279 INFO L87 Difference]: Start difference. First operand 459 states and 624 transitions. Second operand has 24 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2021-11-21 00:03:36,382 WARN L227 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:03:42,647 WARN L227 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:03:48,842 WARN L227 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:03:55,045 WARN L227 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:04:01,250 WARN L227 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:04:07,557 WARN L227 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:04:13,919 WARN L227 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:04:20,257 WARN L227 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:04:24,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:24,887 INFO L93 Difference]: Finished difference Result 867 states and 1186 transitions. [2021-11-21 00:04:24,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-21 00:04:24,888 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 117 [2021-11-21 00:04:24,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:24,891 INFO L225 Difference]: With dead ends: 867 [2021-11-21 00:04:24,892 INFO L226 Difference]: Without dead ends: 451 [2021-11-21 00:04:24,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 87.9s TimeCoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2021-11-21 00:04:24,894 INFO L933 BasicCegarLoop]: 420 mSDtfsCounter, 42 mSDsluCounter, 3694 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3980 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:24,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 3980 Invalid, 1526 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-21 00:04:24,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-21 00:04:24,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2021-11-21 00:04:24,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 279 states have (on average 1.3225806451612903) internal successors, (369), 298 states have internal predecessors, (369), 121 states have call successors, (121), 50 states have call predecessors, (121), 50 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2021-11-21 00:04:24,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 610 transitions. [2021-11-21 00:04:24,952 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 610 transitions. Word has length 117 [2021-11-21 00:04:24,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:24,952 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 610 transitions. [2021-11-21 00:04:24,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2021-11-21 00:04:24,953 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 610 transitions. [2021-11-21 00:04:24,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-21 00:04:24,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:24,955 INFO L514 BasicCegarLoop]: trace histogram [8, 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] [2021-11-21 00:04:24,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:04:25,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:04:25,162 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:04:25,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:25,163 INFO L85 PathProgramCache]: Analyzing trace with hash 12560261, now seen corresponding path program 1 times [2021-11-21 00:04:25,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:04:25,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572451740] [2021-11-21 00:04:25,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:25,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:04:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-21 00:04:25,210 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:04:25,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572451740] [2021-11-21 00:04:25,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572451740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:25,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:25,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:04:25,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033788765] [2021-11-21 00:04:25,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:25,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:04:25,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:04:25,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:04:25,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:04:25,213 INFO L87 Difference]: Start difference. First operand 451 states and 610 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 00:04:25,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:25,360 INFO L93 Difference]: Finished difference Result 847 states and 1154 transitions. [2021-11-21 00:04:25,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:04:25,361 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), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 119 [2021-11-21 00:04:25,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:25,366 INFO L225 Difference]: With dead ends: 847 [2021-11-21 00:04:25,367 INFO L226 Difference]: Without dead ends: 448 [2021-11-21 00:04:25,368 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 00:04:25,369 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 443 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:25,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 442 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:04:25,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-11-21 00:04:25,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2021-11-21 00:04:25,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 279 states have (on average 1.2580645161290323) internal successors, (351), 291 states have internal predecessors, (351), 118 states have call successors, (118), 50 states have call predecessors, (118), 50 states have return successors, (117), 116 states have call predecessors, (117), 117 states have call successors, (117) [2021-11-21 00:04:25,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 586 transitions. [2021-11-21 00:04:25,426 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 586 transitions. Word has length 119 [2021-11-21 00:04:25,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:25,426 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 586 transitions. [2021-11-21 00:04:25,427 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), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 00:04:25,427 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 586 transitions. [2021-11-21 00:04:25,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-21 00:04:25,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:25,429 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] [2021-11-21 00:04:25,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:04:25,430 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:04:25,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:25,431 INFO L85 PathProgramCache]: Analyzing trace with hash 571186167, now seen corresponding path program 1 times [2021-11-21 00:04:25,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:04:25,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198645879] [2021-11-21 00:04:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:25,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:04:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:25,533 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 00:04:25,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:04:25,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198645879] [2021-11-21 00:04:25,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198645879] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:04:25,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036139473] [2021-11-21 00:04:25,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:25,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:04:25,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:04:25,538 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:04:25,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:04:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:25,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:04:25,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:26,111 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 00:04:26,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:04:26,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036139473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:26,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:04:26,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 00:04:26,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458584589] [2021-11-21 00:04:26,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:26,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:04:26,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:04:26,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:04:26,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:04:26,115 INFO L87 Difference]: Start difference. First operand 448 states and 586 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-21 00:04:26,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:26,366 INFO L93 Difference]: Finished difference Result 1246 states and 1677 transitions. [2021-11-21 00:04:26,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:04:26,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 131 [2021-11-21 00:04:26,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:26,375 INFO L225 Difference]: With dead ends: 1246 [2021-11-21 00:04:26,376 INFO L226 Difference]: Without dead ends: 843 [2021-11-21 00:04:26,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:04:26,378 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 392 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:26,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 949 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:04:26,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-11-21 00:04:26,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2021-11-21 00:04:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 527 states have (on average 1.2618595825426946) internal successors, (665), 547 states have internal predecessors, (665), 221 states have call successors, (221), 92 states have call predecessors, (221), 92 states have return successors, (233), 218 states have call predecessors, (233), 219 states have call successors, (233) [2021-11-21 00:04:26,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1119 transitions. [2021-11-21 00:04:26,476 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1119 transitions. Word has length 131 [2021-11-21 00:04:26,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:26,478 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1119 transitions. [2021-11-21 00:04:26,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-21 00:04:26,479 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1119 transitions. [2021-11-21 00:04:26,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-21 00:04:26,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:26,483 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:04:26,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:04:26,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:04:26,701 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:04:26,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:26,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1495676108, now seen corresponding path program 1 times [2021-11-21 00:04:26,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:04:26,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144121314] [2021-11-21 00:04:26,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:26,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:04:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:26,804 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 00:04:26,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:04:26,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144121314] [2021-11-21 00:04:26,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144121314] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:04:26,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598261038] [2021-11-21 00:04:26,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:26,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:04:26,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:04:26,806 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:04:26,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_debe0c54-d106-449c-b1da-17e2bb7b72fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:04:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:27,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:04:27,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:27,404 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 00:04:27,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:04:27,675 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 00:04:27,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598261038] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:04:27,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2068510799] [2021-11-21 00:04:27,680 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2021-11-21 00:04:27,680 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:04:27,681 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:04:27,681 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:04:27,681 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs