./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh --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 c2ee13e5ae0bbed1c37b7eadefb29cbd7041f4c5e0d498dc3d4ea1e000526be8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 03:11:31,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 03:11:31,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 03:11:31,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 03:11:31,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 03:11:31,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 03:11:31,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 03:11:31,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 03:11:31,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 03:11:31,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 03:11:31,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 03:11:31,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 03:11:31,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 03:11:31,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 03:11:31,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 03:11:31,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 03:11:31,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 03:11:31,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 03:11:31,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 03:11:31,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 03:11:31,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 03:11:31,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 03:11:31,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 03:11:31,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 03:11:31,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 03:11:31,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 03:11:31,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 03:11:31,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 03:11:31,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 03:11:31,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 03:11:31,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 03:11:31,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 03:11:31,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 03:11:31,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 03:11:31,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 03:11:31,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 03:11:31,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 03:11:31,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 03:11:31,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 03:11:31,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 03:11:31,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 03:11:31,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 03:11:31,965 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 03:11:31,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 03:11:31,966 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 03:11:31,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 03:11:31,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 03:11:31,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 03:11:31,967 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 03:11:31,967 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 03:11:31,967 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 03:11:31,968 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 03:11:31,968 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 03:11:31,968 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 03:11:31,968 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 03:11:31,968 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 03:11:31,969 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 03:11:31,969 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 03:11:31,969 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 03:11:31,969 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 03:11:31,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 03:11:31,970 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 03:11:31,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 03:11:31,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 03:11:31,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 03:11:31,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 03:11:31,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 03:11:31,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 03:11:31,971 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 03:11:31,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 03:11:31,971 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 03:11:31,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 03:11:31,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 03:11:31,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 03:11:31,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:11:31,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 03:11:31,972 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 03:11:31,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 03:11:31,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 03:11:31,972 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 03:11:31,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 03:11:31,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 03:11:31,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 03:11:31,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2ee13e5ae0bbed1c37b7eadefb29cbd7041f4c5e0d498dc3d4ea1e000526be8 [2022-12-14 03:11:32,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 03:11:32,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 03:11:32,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 03:11:32,156 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 03:11:32,157 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 03:11:32,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c [2022-12-14 03:11:34,817 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 03:11:35,028 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 03:11:35,029 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c [2022-12-14 03:11:35,042 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/data/9a6bca0ca/a54c5b94452b415591de0edeb1379eeb/FLAG0f59bd06d [2022-12-14 03:11:35,053 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/data/9a6bca0ca/a54c5b94452b415591de0edeb1379eeb [2022-12-14 03:11:35,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 03:11:35,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 03:11:35,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 03:11:35,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 03:11:35,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 03:11:35,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:11:35" (1/1) ... [2022-12-14 03:11:35,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ce066e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:35, skipping insertion in model container [2022-12-14 03:11:35,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:11:35" (1/1) ... [2022-12-14 03:11:35,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 03:11:35,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 03:11:35,226 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,321 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,329 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,330 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,335 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,354 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,356 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,402 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,403 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,406 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,410 WARN L237 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_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c[35789,35802] [2022-12-14 03:11:35,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:11:35,488 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 03:11:35,497 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,518 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,520 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,521 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,522 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,529 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,530 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,550 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,551 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,553 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:11:35,555 WARN L237 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_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c[35789,35802] [2022-12-14 03:11:35,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:11:35,609 INFO L208 MainTranslator]: Completed translation [2022-12-14 03:11:35,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:35 WrapperNode [2022-12-14 03:11:35,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 03:11:35,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 03:11:35,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 03:11:35,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 03:11:35,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:35" (1/1) ... [2022-12-14 03:11:35,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:35" (1/1) ... [2022-12-14 03:11:35,673 INFO L138 Inliner]: procedures = 151, calls = 283, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1312 [2022-12-14 03:11:35,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 03:11:35,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 03:11:35,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 03:11:35,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 03:11:35,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:35" (1/1) ... [2022-12-14 03:11:35,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:35" (1/1) ... [2022-12-14 03:11:35,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:35" (1/1) ... [2022-12-14 03:11:35,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:35" (1/1) ... [2022-12-14 03:11:35,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:35" (1/1) ... [2022-12-14 03:11:35,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:35" (1/1) ... [2022-12-14 03:11:35,715 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:35" (1/1) ... [2022-12-14 03:11:35,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:35" (1/1) ... [2022-12-14 03:11:35,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 03:11:35,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 03:11:35,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 03:11:35,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 03:11:35,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:35" (1/1) ... [2022-12-14 03:11:35,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:11:35,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:11:35,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 03:11:35,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 03:11:35,785 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 03:11:35,785 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 03:11:35,785 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-12-14 03:11:35,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-12-14 03:11:35,785 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-12-14 03:11:35,785 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-12-14 03:11:35,785 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 03:11:35,786 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 03:11:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 03:11:35,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 03:11:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 03:11:35,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 03:11:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 03:11:35,786 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 03:11:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-12-14 03:11:35,787 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-12-14 03:11:35,787 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 03:11:35,787 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 03:11:35,787 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-12-14 03:11:35,787 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-12-14 03:11:35,787 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 03:11:35,787 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 03:11:35,787 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 03:11:35,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 03:11:35,788 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 03:11:35,788 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 03:11:35,788 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-12-14 03:11:35,788 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-12-14 03:11:35,788 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-12-14 03:11:35,788 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-12-14 03:11:35,788 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 03:11:35,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 03:11:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 03:11:35,789 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 03:11:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 03:11:35,789 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 03:11:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 03:11:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-12-14 03:11:35,789 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-12-14 03:11:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 03:11:35,790 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 03:11:35,790 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 03:11:35,790 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 03:11:35,790 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 03:11:35,790 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 03:11:35,790 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-12-14 03:11:35,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-12-14 03:11:35,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 03:11:35,790 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 03:11:35,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 03:11:35,790 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 03:11:35,791 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 03:11:35,791 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-12-14 03:11:35,791 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-12-14 03:11:35,791 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-12-14 03:11:35,791 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-12-14 03:11:35,791 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-12-14 03:11:35,791 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-12-14 03:11:35,791 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 03:11:35,791 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 03:11:35,791 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 03:11:35,792 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 03:11:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 03:11:35,792 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 03:11:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 03:11:35,792 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 03:11:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 03:11:35,792 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 03:11:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 03:11:35,792 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 03:11:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 03:11:35,793 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 03:11:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-12-14 03:11:35,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-12-14 03:11:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-12-14 03:11:35,793 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-12-14 03:11:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 03:11:35,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 03:11:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 03:11:35,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 03:11:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 03:11:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 03:11:35,794 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 03:11:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-12-14 03:11:35,794 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-12-14 03:11:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-12-14 03:11:35,794 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-12-14 03:11:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 03:11:35,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 03:11:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 03:11:35,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 03:11:35,976 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 03:11:35,978 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 03:11:36,678 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 03:11:37,092 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 03:11:37,092 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 03:11:37,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:11:37 BoogieIcfgContainer [2022-12-14 03:11:37,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 03:11:37,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 03:11:37,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 03:11:37,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 03:11:37,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:11:35" (1/3) ... [2022-12-14 03:11:37,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d1087b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:11:37, skipping insertion in model container [2022-12-14 03:11:37,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:35" (2/3) ... [2022-12-14 03:11:37,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d1087b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:11:37, skipping insertion in model container [2022-12-14 03:11:37,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:11:37" (3/3) ... [2022-12-14 03:11:37,102 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_productSimulator.cil.c [2022-12-14 03:11:37,122 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 03:11:37,122 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 03:11:37,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 03:11:37,181 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@28deeb78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 03:11:37,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 03:11:37,187 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) [2022-12-14 03:11:37,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-14 03:11:37,201 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:37,202 INFO L195 NwaCegarLoop]: 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] [2022-12-14 03:11:37,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:11:37,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:37,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1001734540, now seen corresponding path program 1 times [2022-12-14 03:11:37,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:37,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145100831] [2022-12-14 03:11:37,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:37,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:37,477 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 03:11:37,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:37,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145100831] [2022-12-14 03:11:37,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145100831] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:11:37,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:11:37,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 03:11:37,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358333143] [2022-12-14 03:11:37,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:11:37,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 03:11:37,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:37,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 03:11:37,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 03:11:37,508 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) [2022-12-14 03:11:37,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:37,657 INFO L93 Difference]: Finished difference Result 602 states and 816 transitions. [2022-12-14 03:11:37,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 03:11:37,659 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 [2022-12-14 03:11:37,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:37,668 INFO L225 Difference]: With dead ends: 602 [2022-12-14 03:11:37,668 INFO L226 Difference]: Without dead ends: 377 [2022-12-14 03:11:37,672 INFO L412 NwaCegarLoop]: 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 [2022-12-14 03:11:37,674 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:37,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 465 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:11:37,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-12-14 03:11:37,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-12-14 03:11:37,720 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) [2022-12-14 03:11:37,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 513 transitions. [2022-12-14 03:11:37,724 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 513 transitions. Word has length 97 [2022-12-14 03:11:37,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:37,725 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 513 transitions. [2022-12-14 03:11:37,725 INFO L496 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) [2022-12-14 03:11:37,725 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 513 transitions. [2022-12-14 03:11:37,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 03:11:37,728 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:37,728 INFO L195 NwaCegarLoop]: 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] [2022-12-14 03:11:37,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 03:11:37,729 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:11:37,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:37,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1898277073, now seen corresponding path program 1 times [2022-12-14 03:11:37,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:37,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129256974] [2022-12-14 03:11:37,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:37,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:37,911 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 03:11:37,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:37,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129256974] [2022-12-14 03:11:37,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129256974] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:11:37,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:11:37,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:11:37,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532716342] [2022-12-14 03:11:37,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:11:37,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:11:37,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:37,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:11:37,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:11:37,915 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) [2022-12-14 03:11:38,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:38,056 INFO L93 Difference]: Finished difference Result 598 states and 796 transitions. [2022-12-14 03:11:38,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:11:38,057 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 [2022-12-14 03:11:38,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:38,061 INFO L225 Difference]: With dead ends: 598 [2022-12-14 03:11:38,061 INFO L226 Difference]: Without dead ends: 379 [2022-12-14 03:11:38,062 INFO L412 NwaCegarLoop]: 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 [2022-12-14 03:11:38,063 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 0 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:38,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 923 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:11:38,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-12-14 03:11:38,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2022-12-14 03:11:38,081 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) [2022-12-14 03:11:38,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 515 transitions. [2022-12-14 03:11:38,083 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 515 transitions. Word has length 98 [2022-12-14 03:11:38,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:38,084 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 515 transitions. [2022-12-14 03:11:38,084 INFO L496 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) [2022-12-14 03:11:38,084 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 515 transitions. [2022-12-14 03:11:38,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-14 03:11:38,086 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:38,086 INFO L195 NwaCegarLoop]: 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] [2022-12-14 03:11:38,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 03:11:38,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:11:38,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:38,087 INFO L85 PathProgramCache]: Analyzing trace with hash -243834396, now seen corresponding path program 1 times [2022-12-14 03:11:38,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:38,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304899568] [2022-12-14 03:11:38,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:38,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:38,175 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 03:11:38,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:38,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304899568] [2022-12-14 03:11:38,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304899568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:11:38,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:11:38,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:11:38,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719330379] [2022-12-14 03:11:38,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:11:38,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:11:38,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:38,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:11:38,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:11:38,178 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) [2022-12-14 03:11:38,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:38,315 INFO L93 Difference]: Finished difference Result 757 states and 1044 transitions. [2022-12-14 03:11:38,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:11:38,315 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 [2022-12-14 03:11:38,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:38,318 INFO L225 Difference]: With dead ends: 757 [2022-12-14 03:11:38,318 INFO L226 Difference]: Without dead ends: 446 [2022-12-14 03:11:38,319 INFO L412 NwaCegarLoop]: 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 [2022-12-14 03:11:38,320 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 84 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:38,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 933 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:11:38,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-12-14 03:11:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 441. [2022-12-14 03:11:38,339 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) [2022-12-14 03:11:38,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 620 transitions. [2022-12-14 03:11:38,341 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 620 transitions. Word has length 103 [2022-12-14 03:11:38,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:38,341 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 620 transitions. [2022-12-14 03:11:38,341 INFO L496 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) [2022-12-14 03:11:38,342 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 620 transitions. [2022-12-14 03:11:38,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-14 03:11:38,343 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:38,343 INFO L195 NwaCegarLoop]: 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] [2022-12-14 03:11:38,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 03:11:38,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:11:38,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:38,344 INFO L85 PathProgramCache]: Analyzing trace with hash -822193235, now seen corresponding path program 1 times [2022-12-14 03:11:38,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:38,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199016078] [2022-12-14 03:11:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:38,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:38,482 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 03:11:38,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:38,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199016078] [2022-12-14 03:11:38,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199016078] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:11:38,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552323918] [2022-12-14 03:11:38,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:38,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:11:38,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:11:38,484 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:11:38,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 03:11:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:38,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 03:11:38,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:11:38,902 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 03:11:38,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:11:38,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552323918] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:11:38,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:11:38,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 03:11:38,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054887451] [2022-12-14 03:11:38,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:11:38,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:11:38,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:38,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:11:38,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:11:38,905 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) [2022-12-14 03:11:39,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:39,035 INFO L93 Difference]: Finished difference Result 859 states and 1224 transitions. [2022-12-14 03:11:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:11:39,036 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 [2022-12-14 03:11:39,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:39,040 INFO L225 Difference]: With dead ends: 859 [2022-12-14 03:11:39,040 INFO L226 Difference]: Without dead ends: 439 [2022-12-14 03:11:39,041 INFO L412 NwaCegarLoop]: 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 [2022-12-14 03:11:39,042 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 420 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:39,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 448 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:11:39,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-12-14 03:11:39,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2022-12-14 03:11:39,061 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) [2022-12-14 03:11:39,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 608 transitions. [2022-12-14 03:11:39,063 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 608 transitions. Word has length 104 [2022-12-14 03:11:39,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:39,063 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 608 transitions. [2022-12-14 03:11:39,063 INFO L496 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) [2022-12-14 03:11:39,063 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 608 transitions. [2022-12-14 03:11:39,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-14 03:11:39,065 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:39,065 INFO L195 NwaCegarLoop]: 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] [2022-12-14 03:11:39,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 03:11:39,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:11:39,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:11:39,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:39,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1525358091, now seen corresponding path program 1 times [2022-12-14 03:11:39,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:39,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023109821] [2022-12-14 03:11:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:39,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:39,503 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 03:11:39,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:39,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023109821] [2022-12-14 03:11:39,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023109821] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:11:39,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507302917] [2022-12-14 03:11:39,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:39,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:11:39,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:11:39,505 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:11:39,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 03:11:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:39,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1301 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 03:11:39,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:11:39,808 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 03:11:39,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:11:39,889 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 03:11:39,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507302917] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:11:39,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [442192000] [2022-12-14 03:11:39,912 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2022-12-14 03:11:39,912 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:11:39,916 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:11:39,921 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:11:39,922 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:11:52,033 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-12-14 03:11:52,355 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:12:25,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [442192000] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:12:25,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:12:25,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 28 [2022-12-14 03:12:25,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381486425] [2022-12-14 03:12:25,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:12:25,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 03:12:25,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:12:25,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 03:12:25,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-12-14 03:12:25,320 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) [2022-12-14 03:12:40,876 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 706 DAG size of output: 521 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:12:46,577 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 706 DAG size of output: 523 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:12:56,590 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 706 DAG size of output: 527 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:13:02,880 WARN L233 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 706 DAG size of output: 529 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:13:08,172 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 706 DAG size of output: 531 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:13:16,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:13:16,260 INFO L93 Difference]: Finished difference Result 874 states and 1200 transitions. [2022-12-14 03:13:16,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-14 03:13:16,261 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 [2022-12-14 03:13:16,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:13:16,262 INFO L225 Difference]: With dead ends: 874 [2022-12-14 03:13:16,262 INFO L226 Difference]: Without dead ends: 467 [2022-12-14 03:13:16,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 79.5s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 03:13:16,264 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 94 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-14 03:13:16,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 2192 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-14 03:13:16,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-12-14 03:13:16,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 459. [2022-12-14 03:13:16,331 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) [2022-12-14 03:13:16,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 624 transitions. [2022-12-14 03:13:16,333 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 624 transitions. Word has length 113 [2022-12-14 03:13:16,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:13:16,333 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 624 transitions. [2022-12-14 03:13:16,333 INFO L496 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) [2022-12-14 03:13:16,333 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 624 transitions. [2022-12-14 03:13:16,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-14 03:13:16,334 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:13:16,335 INFO L195 NwaCegarLoop]: 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] [2022-12-14 03:13:16,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 03:13:16,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:13:16,536 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:13:16,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:13:16,536 INFO L85 PathProgramCache]: Analyzing trace with hash 807096409, now seen corresponding path program 1 times [2022-12-14 03:13:16,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:13:16,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935113707] [2022-12-14 03:13:16,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:13:16,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:13:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:13:16,640 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 03:13:16,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:13:16,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935113707] [2022-12-14 03:13:16,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935113707] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:13:16,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259446871] [2022-12-14 03:13:16,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:13:16,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:13:16,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:13:16,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:13:16,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 03:13:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:13:16,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 1305 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 03:13:16,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:13:16,890 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 03:13:16,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:13:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 03:13:16,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259446871] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:13:16,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [515682881] [2022-12-14 03:13:16,949 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2022-12-14 03:13:16,949 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:13:16,950 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:13:16,950 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:13:16,950 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:13:28,991 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-12-14 03:13:29,314 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:14:02,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [515682881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:14:02,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:14:02,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2022-12-14 03:14:02,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318712623] [2022-12-14 03:14:02,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:14:02,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 03:14:02,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:14:02,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 03:14:02,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-12-14 03:14:02,896 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) [2022-12-14 03:14:12,834 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 708 DAG size of output: 519 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:14:23,368 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 706 DAG size of output: 523 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:14:34,812 WARN L233 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 706 DAG size of output: 527 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:14:48,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:14:48,237 INFO L93 Difference]: Finished difference Result 867 states and 1186 transitions. [2022-12-14 03:14:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-14 03:14:48,238 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 [2022-12-14 03:14:48,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:14:48,240 INFO L225 Difference]: With dead ends: 867 [2022-12-14 03:14:48,240 INFO L226 Difference]: Without dead ends: 451 [2022-12-14 03:14:48,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 74.5s TimeCoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 03:14:48,242 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 52 mSDsluCounter, 2478 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-14 03:14:48,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 2899 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-14 03:14:48,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-12-14 03:14:48,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2022-12-14 03:14:48,297 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) [2022-12-14 03:14:48,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 610 transitions. [2022-12-14 03:14:48,298 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 610 transitions. Word has length 117 [2022-12-14 03:14:48,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:14:48,298 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 610 transitions. [2022-12-14 03:14:48,299 INFO L496 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) [2022-12-14 03:14:48,299 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 610 transitions. [2022-12-14 03:14:48,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-14 03:14:48,300 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:14:48,300 INFO L195 NwaCegarLoop]: 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] [2022-12-14 03:14:48,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 03:14:48,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:14:48,502 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:14:48,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:14:48,503 INFO L85 PathProgramCache]: Analyzing trace with hash 322564112, now seen corresponding path program 1 times [2022-12-14 03:14:48,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:14:48,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769960651] [2022-12-14 03:14:48,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:14:48,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:14:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:14:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 03:14:48,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:14:48,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769960651] [2022-12-14 03:14:48,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769960651] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:14:48,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:14:48,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:14:48,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620010722] [2022-12-14 03:14:48,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:14:48,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:14:48,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:14:48,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:14:48,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:14:48,591 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) [2022-12-14 03:14:48,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:14:48,749 INFO L93 Difference]: Finished difference Result 847 states and 1154 transitions. [2022-12-14 03:14:48,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:14:48,749 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 [2022-12-14 03:14:48,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:14:48,752 INFO L225 Difference]: With dead ends: 847 [2022-12-14 03:14:48,752 INFO L226 Difference]: Without dead ends: 448 [2022-12-14 03:14:48,753 INFO L412 NwaCegarLoop]: 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 [2022-12-14 03:14:48,754 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 443 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:14:48,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 443 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:14:48,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-12-14 03:14:48,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-12-14 03:14:48,823 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) [2022-12-14 03:14:48,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 586 transitions. [2022-12-14 03:14:48,824 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 586 transitions. Word has length 119 [2022-12-14 03:14:48,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:14:48,825 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 586 transitions. [2022-12-14 03:14:48,825 INFO L496 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) [2022-12-14 03:14:48,825 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 586 transitions. [2022-12-14 03:14:48,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-14 03:14:48,826 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:14:48,826 INFO L195 NwaCegarLoop]: 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] [2022-12-14 03:14:48,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 03:14:48,826 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:14:48,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:14:48,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1377184868, now seen corresponding path program 1 times [2022-12-14 03:14:48,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:14:48,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368604503] [2022-12-14 03:14:48,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:14:48,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:14:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:14:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 03:14:48,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:14:48,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368604503] [2022-12-14 03:14:48,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368604503] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:14:48,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656921534] [2022-12-14 03:14:48,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:14:48,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:14:48,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:14:48,922 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:14:48,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 03:14:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:14:49,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 03:14:49,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:14:49,219 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 03:14:49,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:14:49,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656921534] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:14:49,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:14:49,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 03:14:49,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999396691] [2022-12-14 03:14:49,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:14:49,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:14:49,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:14:49,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:14:49,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:14:49,221 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) [2022-12-14 03:14:49,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:14:49,459 INFO L93 Difference]: Finished difference Result 1246 states and 1677 transitions. [2022-12-14 03:14:49,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:14:49,460 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 [2022-12-14 03:14:49,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:14:49,464 INFO L225 Difference]: With dead ends: 1246 [2022-12-14 03:14:49,464 INFO L226 Difference]: Without dead ends: 843 [2022-12-14 03:14:49,466 INFO L412 NwaCegarLoop]: 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 [2022-12-14 03:14:49,467 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 392 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:14:49,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 951 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:14:49,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-12-14 03:14:49,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2022-12-14 03:14:49,601 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) [2022-12-14 03:14:49,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1119 transitions. [2022-12-14 03:14:49,604 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1119 transitions. Word has length 131 [2022-12-14 03:14:49,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:14:49,604 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1119 transitions. [2022-12-14 03:14:49,604 INFO L496 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) [2022-12-14 03:14:49,604 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1119 transitions. [2022-12-14 03:14:49,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-14 03:14:49,606 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:14:49,606 INFO L195 NwaCegarLoop]: 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] [2022-12-14 03:14:49,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 03:14:49,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:14:49,807 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:14:49,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:14:49,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1574070094, now seen corresponding path program 1 times [2022-12-14 03:14:49,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:14:49,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157667204] [2022-12-14 03:14:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:14:49,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:14:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:14:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 03:14:49,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:14:49,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157667204] [2022-12-14 03:14:49,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157667204] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:14:49,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3730937] [2022-12-14 03:14:49,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:14:49,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:14:49,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:14:49,982 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:14:49,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 03:14:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:14:50,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 03:14:50,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:14:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 03:14:50,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:14:50,280 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 03:14:50,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3730937] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:14:50,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [129079841] [2022-12-14 03:14:50,284 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2022-12-14 03:14:50,284 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:14:50,285 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:14:50,285 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:14:50,285 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:15:02,642 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-12-14 03:15:02,963 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:15:40,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [129079841] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:15:40,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:15:40,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [4, 4, 4] total 32 [2022-12-14 03:15:40,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827664944] [2022-12-14 03:15:40,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:15:40,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-14 03:15:40,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:15:40,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-14 03:15:40,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-12-14 03:15:40,006 INFO L87 Difference]: Start difference. First operand 841 states and 1119 transitions. Second operand has 27 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 17 states have internal predecessors, (68), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-12-14 03:15:59,264 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 706 DAG size of output: 523 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:16:04,564 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 706 DAG size of output: 525 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:16:22,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:16:22,128 INFO L93 Difference]: Finished difference Result 1635 states and 2185 transitions. [2022-12-14 03:16:22,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 03:16:22,129 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 17 states have internal predecessors, (68), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 132 [2022-12-14 03:16:22,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:16:22,133 INFO L225 Difference]: With dead ends: 1635 [2022-12-14 03:16:22,133 INFO L226 Difference]: Without dead ends: 840 [2022-12-14 03:16:22,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 75.6s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 03:16:22,136 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 60 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-14 03:16:22,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 2145 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-14 03:16:22,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-12-14 03:16:22,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 840. [2022-12-14 03:16:22,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 526 states have (on average 1.2566539923954372) internal successors, (661), 546 states have internal predecessors, (661), 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) [2022-12-14 03:16:22,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1115 transitions. [2022-12-14 03:16:22,233 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1115 transitions. Word has length 132 [2022-12-14 03:16:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:16:22,234 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1115 transitions. [2022-12-14 03:16:22,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 17 states have internal predecessors, (68), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-12-14 03:16:22,234 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1115 transitions. [2022-12-14 03:16:22,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-14 03:16:22,235 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:16:22,235 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:16:22,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 03:16:22,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:16:22,437 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:16:22,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:16:22,438 INFO L85 PathProgramCache]: Analyzing trace with hash 44203654, now seen corresponding path program 1 times [2022-12-14 03:16:22,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:16:22,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933680909] [2022-12-14 03:16:22,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:16:22,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:16:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:16:22,552 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 03:16:22,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:16:22,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933680909] [2022-12-14 03:16:22,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933680909] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:16:22,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954005720] [2022-12-14 03:16:22,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:16:22,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:16:22,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:16:22,553 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:16:22,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 03:16:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:16:22,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 03:16:22,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:16:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 03:16:22,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:16:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 03:16:22,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954005720] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:16:22,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1588074024] [2022-12-14 03:16:22,860 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2022-12-14 03:16:22,861 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:16:22,861 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:16:22,861 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:16:22,861 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:18:00,491 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 497 for LOIs [2022-12-14 03:18:01,686 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 503 for LOIs [2022-12-14 03:18:03,617 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-12-14 03:18:03,939 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 252 for LOIs [2022-12-14 03:18:04,750 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 441 for LOIs [2022-12-14 03:18:05,042 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 443 for LOIs [2022-12-14 03:18:05,384 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:19:12,834 WARN L233 SmtUtils]: Spent 8.68s on a formula simplification. DAG size of input: 737 DAG size of output: 597 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:19:22,698 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 726 DAG size of output: 521 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:19:30,605 WARN L233 SmtUtils]: Spent 7.19s on a formula simplification. DAG size of input: 732 DAG size of output: 551 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:19:37,132 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 736 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:20:12,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1588074024] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:20:12,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:20:12,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [4, 4, 4] total 60 [2022-12-14 03:20:12,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765024224] [2022-12-14 03:20:12,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:20:12,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-12-14 03:20:12,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:20:12,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-12-14 03:20:12,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=3294, Unknown=0, NotChecked=0, Total=3540 [2022-12-14 03:20:12,969 INFO L87 Difference]: Start difference. First operand 840 states and 1115 transitions. Second operand has 55 states, 37 states have (on average 1.864864864864865) internal successors, (69), 39 states have internal predecessors, (69), 16 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (23), 18 states have call predecessors, (23), 16 states have call successors, (23) [2022-12-14 03:20:18,757 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 709 DAG size of output: 517 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:20:24,692 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 708 DAG size of output: 519 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:20:35,951 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 706 DAG size of output: 523 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:20:41,641 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 706 DAG size of output: 525 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:20:47,710 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 706 DAG size of output: 527 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:21:44,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:21:44,849 INFO L93 Difference]: Finished difference Result 1575 states and 2163 transitions. [2022-12-14 03:21:44,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-12-14 03:21:44,850 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 37 states have (on average 1.864864864864865) internal successors, (69), 39 states have internal predecessors, (69), 16 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (23), 18 states have call predecessors, (23), 16 states have call successors, (23) Word has length 133 [2022-12-14 03:21:44,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:21:44,853 INFO L225 Difference]: With dead ends: 1575 [2022-12-14 03:21:44,853 INFO L226 Difference]: Without dead ends: 1011 [2022-12-14 03:21:44,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 339 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2211 ImplicationChecksByTransitivity, 184.2s TimeCoverageRelationStatistics Valid=369, Invalid=4887, Unknown=0, NotChecked=0, Total=5256 [2022-12-14 03:21:44,855 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 372 mSDsluCounter, 10207 mSDsCounter, 0 mSdLazyCounter, 9343 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 10738 SdHoareTripleChecker+Invalid, 9373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 9343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.6s IncrementalHoareTripleChecker+Time [2022-12-14 03:21:44,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 10738 Invalid, 9373 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [30 Valid, 9343 Invalid, 0 Unknown, 0 Unchecked, 34.6s Time] [2022-12-14 03:21:44,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2022-12-14 03:21:45,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 863. [2022-12-14 03:21:45,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 548 states have (on average 1.2664233576642336) internal successors, (694), 568 states have internal predecessors, (694), 221 states have call successors, (221), 93 states have call predecessors, (221), 93 states have return successors, (233), 218 states have call predecessors, (233), 219 states have call successors, (233) [2022-12-14 03:21:45,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1148 transitions. [2022-12-14 03:21:45,053 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1148 transitions. Word has length 133 [2022-12-14 03:21:45,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:21:45,054 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1148 transitions. [2022-12-14 03:21:45,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 37 states have (on average 1.864864864864865) internal successors, (69), 39 states have internal predecessors, (69), 16 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (23), 18 states have call predecessors, (23), 16 states have call successors, (23) [2022-12-14 03:21:45,054 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1148 transitions. [2022-12-14 03:21:45,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-14 03:21:45,056 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:21:45,056 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:21:45,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 03:21:45,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 03:21:45,256 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:21:45,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:21:45,257 INFO L85 PathProgramCache]: Analyzing trace with hash -602994710, now seen corresponding path program 1 times [2022-12-14 03:21:45,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:21:45,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224071989] [2022-12-14 03:21:45,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:21:45,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:21:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:21:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 03:21:45,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:21:45,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224071989] [2022-12-14 03:21:45,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224071989] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:21:45,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369656908] [2022-12-14 03:21:45,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:21:45,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:21:45,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:21:45,342 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:21:45,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 03:21:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:21:45,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 03:21:45,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:21:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 03:21:45,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:21:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 03:21:45,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369656908] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:21:45,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [156239588] [2022-12-14 03:21:45,613 INFO L159 IcfgInterpreter]: Started Sifa with 110 locations of interest [2022-12-14 03:21:45,613 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:21:45,614 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:21:45,614 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:21:45,614 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:21:57,714 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-12-14 03:21:58,040 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:22:33,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [156239588] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:22:33,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:22:33,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [4, 4, 4] total 31 [2022-12-14 03:22:33,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998736675] [2022-12-14 03:22:33,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:22:33,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 03:22:33,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:22:33,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 03:22:33,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2022-12-14 03:22:33,388 INFO L87 Difference]: Start difference. First operand 863 states and 1148 transitions. Second operand has 26 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 16 states have internal predecessors, (69), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-12-14 03:22:53,561 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 706 DAG size of output: 523 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:22:59,378 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 706 DAG size of output: 525 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:23:10,196 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 706 DAG size of output: 529 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:23:15,836 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 706 DAG size of output: 531 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:23:20,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:23:20,654 INFO L93 Difference]: Finished difference Result 1263 states and 1677 transitions. [2022-12-14 03:23:20,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 03:23:20,655 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 16 states have internal predecessors, (69), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) Word has length 135 [2022-12-14 03:23:20,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:23:20,657 INFO L225 Difference]: With dead ends: 1263 [2022-12-14 03:23:20,657 INFO L226 Difference]: Without dead ends: 863 [2022-12-14 03:23:20,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 76.6s TimeCoverageRelationStatistics Valid=231, Invalid=1251, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 03:23:20,659 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 40 mSDsluCounter, 3828 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 4233 SdHoareTripleChecker+Invalid, 1565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-12-14 03:23:20,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 4233 Invalid, 1565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1559 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-12-14 03:23:20,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-12-14 03:23:20,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2022-12-14 03:23:20,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 548 states have (on average 1.2645985401459854) internal successors, (693), 568 states have internal predecessors, (693), 221 states have call successors, (221), 93 states have call predecessors, (221), 93 states have return successors, (233), 218 states have call predecessors, (233), 219 states have call successors, (233) [2022-12-14 03:23:20,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1147 transitions. [2022-12-14 03:23:20,853 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1147 transitions. Word has length 135 [2022-12-14 03:23:20,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:23:20,854 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1147 transitions. [2022-12-14 03:23:20,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 16 states have internal predecessors, (69), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-12-14 03:23:20,854 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1147 transitions. [2022-12-14 03:23:20,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-12-14 03:23:20,855 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:23:20,855 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:23:20,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 03:23:21,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:23:21,057 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:23:21,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:23:21,058 INFO L85 PathProgramCache]: Analyzing trace with hash -2013185644, now seen corresponding path program 1 times [2022-12-14 03:23:21,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:23:21,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873610074] [2022-12-14 03:23:21,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:23:21,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:23:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:23:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 03:23:21,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:23:21,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873610074] [2022-12-14 03:23:21,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873610074] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:23:21,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:23:21,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:23:21,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31131912] [2022-12-14 03:23:21,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:23:21,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:23:21,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:23:21,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:23:21,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:23:21,141 INFO L87 Difference]: Start difference. First operand 863 states and 1147 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 03:23:21,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:23:21,565 INFO L93 Difference]: Finished difference Result 1818 states and 2456 transitions. [2022-12-14 03:23:21,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:23:21,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 139 [2022-12-14 03:23:21,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:23:21,571 INFO L225 Difference]: With dead ends: 1818 [2022-12-14 03:23:21,571 INFO L226 Difference]: Without dead ends: 1218 [2022-12-14 03:23:21,572 INFO L412 NwaCegarLoop]: 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 [2022-12-14 03:23:21,573 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 444 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:23:21,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 1145 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:23:21,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2022-12-14 03:23:21,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1216. [2022-12-14 03:23:21,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 746 states have (on average 1.2332439678284182) internal successors, (920), 776 states have internal predecessors, (920), 318 states have call successors, (318), 149 states have call predecessors, (318), 151 states have return successors, (361), 318 states have call predecessors, (361), 311 states have call successors, (361) [2022-12-14 03:23:21,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1599 transitions. [2022-12-14 03:23:21,821 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1599 transitions. Word has length 139 [2022-12-14 03:23:21,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:23:21,821 INFO L495 AbstractCegarLoop]: Abstraction has 1216 states and 1599 transitions. [2022-12-14 03:23:21,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 03:23:21,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1599 transitions. [2022-12-14 03:23:21,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 03:23:21,823 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:23:21,823 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:23:21,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 03:23:21,823 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:23:21,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:23:21,824 INFO L85 PathProgramCache]: Analyzing trace with hash 887848484, now seen corresponding path program 1 times [2022-12-14 03:23:21,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:23:21,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126244279] [2022-12-14 03:23:21,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:23:21,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:23:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:23:21,872 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-14 03:23:21,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:23:21,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126244279] [2022-12-14 03:23:21,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126244279] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:23:21,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:23:21,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:23:21,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556435804] [2022-12-14 03:23:21,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:23:21,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:23:21,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:23:21,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:23:21,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:23:21,874 INFO L87 Difference]: Start difference. First operand 1216 states and 1599 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 03:23:22,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:23:22,332 INFO L93 Difference]: Finished difference Result 2609 states and 3527 transitions. [2022-12-14 03:23:22,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:23:22,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 140 [2022-12-14 03:23:22,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:23:22,339 INFO L225 Difference]: With dead ends: 2609 [2022-12-14 03:23:22,339 INFO L226 Difference]: Without dead ends: 1514 [2022-12-14 03:23:22,341 INFO L412 NwaCegarLoop]: 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 [2022-12-14 03:23:22,341 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 74 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:23:22,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 878 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:23:22,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2022-12-14 03:23:22,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1498. [2022-12-14 03:23:22,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 966 states have (on average 1.2763975155279503) internal successors, (1233), 996 states have internal predecessors, (1233), 380 states have call successors, (380), 149 states have call predecessors, (380), 151 states have return successors, (423), 380 states have call predecessors, (423), 373 states have call successors, (423) [2022-12-14 03:23:22,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 2036 transitions. [2022-12-14 03:23:22,646 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 2036 transitions. Word has length 140 [2022-12-14 03:23:22,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:23:22,646 INFO L495 AbstractCegarLoop]: Abstraction has 1498 states and 2036 transitions. [2022-12-14 03:23:22,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 03:23:22,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 2036 transitions. [2022-12-14 03:23:22,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 03:23:22,648 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:23:22,648 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:23:22,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 03:23:22,648 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:23:22,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:23:22,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1971420558, now seen corresponding path program 1 times [2022-12-14 03:23:22,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:23:22,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793255737] [2022-12-14 03:23:22,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:23:22,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:23:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:23:22,733 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 03:23:22,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:23:22,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793255737] [2022-12-14 03:23:22,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793255737] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:23:22,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546182307] [2022-12-14 03:23:22,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:23:22,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:23:22,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:23:22,735 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:23:22,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c43a9ec-80f2-4e9e-b24f-25cd94974a93/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 03:23:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:23:22,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 03:23:22,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:23:22,993 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 03:23:22,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:23:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 03:23:23,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546182307] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:23:23,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1474022093] [2022-12-14 03:23:23,042 INFO L159 IcfgInterpreter]: Started Sifa with 115 locations of interest [2022-12-14 03:23:23,042 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:23:23,042 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:23:23,042 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:23:23,042 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:25:13,474 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 505 for LOIs [2022-12-14 03:25:14,657 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 511 for LOIs [2022-12-14 03:25:16,254 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-12-14 03:25:16,563 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 256 for LOIs [2022-12-14 03:25:17,391 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 441 for LOIs [2022-12-14 03:25:17,689 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 443 for LOIs [2022-12-14 03:25:17,986 INFO L180 IcfgInterpreter]: Interpretation finished