./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 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/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_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur --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-38b53e6 [2022-11-25 22:25:49,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:25:49,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:25:49,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:25:49,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:25:49,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:25:49,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:25:49,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:25:49,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:25:49,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:25:49,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:25:49,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:25:49,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:25:49,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:25:49,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:25:49,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:25:49,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:25:49,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:25:49,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:25:49,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:25:49,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:25:49,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:25:49,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:25:49,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:25:49,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:25:49,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:25:49,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:25:49,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:25:49,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:25:49,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:25:49,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:25:49,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:25:49,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:25:49,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:25:49,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:25:49,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:25:49,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:25:49,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:25:49,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:25:49,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:25:49,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:25:49,982 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 22:25:50,027 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:25:50,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:25:50,028 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:25:50,028 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:25:50,029 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:25:50,029 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:25:50,029 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:25:50,029 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:25:50,029 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:25:50,030 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:25:50,031 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:25:50,031 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:25:50,031 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:25:50,031 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:25:50,031 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:25:50,032 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:25:50,032 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:25:50,032 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:25:50,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:25:50,033 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:25:50,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:25:50,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:25:50,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:25:50,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:25:50,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:25:50,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:25:50,034 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:25:50,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:25:50,035 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:25:50,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:25:50,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:25:50,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:25:50,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:25:50,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:25:50,037 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:25:50,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:25:50,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:25:50,037 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:25:50,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:25:50,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:25:50,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:25:50,038 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_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2ee13e5ae0bbed1c37b7eadefb29cbd7041f4c5e0d498dc3d4ea1e000526be8 [2022-11-25 22:25:50,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:25:50,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:25:50,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:25:50,333 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:25:50,334 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:25:50,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c [2022-11-25 22:25:53,505 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:25:53,913 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:25:53,914 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c [2022-11-25 22:25:53,948 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/data/515d020da/cb41ba3cf73e470db0c8f332b54cbac0/FLAGdeee0683f [2022-11-25 22:25:53,967 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/data/515d020da/cb41ba3cf73e470db0c8f332b54cbac0 [2022-11-25 22:25:53,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:25:53,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:25:53,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:25:53,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:25:53,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:25:53,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:25:53" (1/1) ... [2022-11-25 22:25:53,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cca2a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:53, skipping insertion in model container [2022-11-25 22:25:53,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:25:53" (1/1) ... [2022-11-25 22:25:53,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:25:54,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:25:54,267 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,443 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,465 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,466 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,487 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,508 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,510 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,569 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,571 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,575 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,583 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_c953e2fa-0432-4703-8a95-dd63bfd0978c/sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c[35789,35802] [2022-11-25 22:25:54,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:25:54,754 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:25:54,766 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,786 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,790 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,790 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,793 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,802 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,803 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,822 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,824 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,827 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:25:54,832 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_c953e2fa-0432-4703-8a95-dd63bfd0978c/sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c[35789,35802] [2022-11-25 22:25:54,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:25:54,928 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:25:54,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:54 WrapperNode [2022-11-25 22:25:54,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:25:54,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:25:54,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:25:54,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:25:54,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:54" (1/1) ... [2022-11-25 22:25:54,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:54" (1/1) ... [2022-11-25 22:25:55,063 INFO L138 Inliner]: procedures = 151, calls = 283, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1312 [2022-11-25 22:25:55,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:25:55,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:25:55,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:25:55,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:25:55,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:54" (1/1) ... [2022-11-25 22:25:55,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:54" (1/1) ... [2022-11-25 22:25:55,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:54" (1/1) ... [2022-11-25 22:25:55,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:54" (1/1) ... [2022-11-25 22:25:55,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:54" (1/1) ... [2022-11-25 22:25:55,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:54" (1/1) ... [2022-11-25 22:25:55,129 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:54" (1/1) ... [2022-11-25 22:25:55,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:54" (1/1) ... [2022-11-25 22:25:55,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:25:55,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:25:55,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:25:55,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:25:55,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:54" (1/1) ... [2022-11-25 22:25:55,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:25:55,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:55,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:25:55,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:25:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-25 22:25:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-25 22:25:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-11-25 22:25:55,235 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-11-25 22:25:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-11-25 22:25:55,236 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-11-25 22:25:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-25 22:25:55,237 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-25 22:25:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-25 22:25:55,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-25 22:25:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-25 22:25:55,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-25 22:25:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-25 22:25:55,238 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-25 22:25:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-11-25 22:25:55,238 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-11-25 22:25:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-25 22:25:55,238 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-25 22:25:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-11-25 22:25:55,239 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-11-25 22:25:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-25 22:25:55,239 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-25 22:25:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-25 22:25:55,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-25 22:25:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-25 22:25:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-25 22:25:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-11-25 22:25:55,241 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-11-25 22:25:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-11-25 22:25:55,242 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-11-25 22:25:55,242 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-25 22:25:55,242 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-25 22:25:55,242 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-25 22:25:55,243 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-25 22:25:55,243 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-25 22:25:55,243 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-25 22:25:55,243 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-25 22:25:55,243 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-11-25 22:25:55,243 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-11-25 22:25:55,244 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-25 22:25:55,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-25 22:25:55,244 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-25 22:25:55,244 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-25 22:25:55,244 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-25 22:25:55,244 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-25 22:25:55,245 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-11-25 22:25:55,245 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-11-25 22:25:55,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:25:55,245 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-25 22:25:55,245 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-25 22:25:55,245 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-25 22:25:55,245 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-25 22:25:55,246 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-11-25 22:25:55,246 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-11-25 22:25:55,247 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-11-25 22:25:55,247 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-11-25 22:25:55,247 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-11-25 22:25:55,247 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-11-25 22:25:55,248 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-25 22:25:55,248 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-25 22:25:55,248 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-25 22:25:55,248 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-25 22:25:55,249 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-25 22:25:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-25 22:25:55,249 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-25 22:25:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-25 22:25:55,249 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-25 22:25:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-25 22:25:55,249 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-25 22:25:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-25 22:25:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-25 22:25:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-25 22:25:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-11-25 22:25:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-11-25 22:25:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-11-25 22:25:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-11-25 22:25:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-25 22:25:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-25 22:25:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-25 22:25:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-25 22:25:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:25:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-25 22:25:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-25 22:25:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-11-25 22:25:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-11-25 22:25:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-25 22:25:55,253 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-25 22:25:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-25 22:25:55,257 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-25 22:25:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:25:55,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:25:55,608 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:25:55,616 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:25:56,952 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:25:57,712 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:25:57,712 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 22:25:57,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:25:57 BoogieIcfgContainer [2022-11-25 22:25:57,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:25:57,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:25:57,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:25:57,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:25:57,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:25:53" (1/3) ... [2022-11-25 22:25:57,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd77485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:25:57, skipping insertion in model container [2022-11-25 22:25:57,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:54" (2/3) ... [2022-11-25 22:25:57,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd77485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:25:57, skipping insertion in model container [2022-11-25 22:25:57,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:25:57" (3/3) ... [2022-11-25 22:25:57,734 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_productSimulator.cil.c [2022-11-25 22:25:57,756 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:25:57,756 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 22:25:57,837 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:25:57,845 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;@7a45ea06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:25:57,846 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 22:25:57,853 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) [2022-11-25 22:25:57,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-25 22:25:57,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:57,882 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] [2022-11-25 22:25:57,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:25:57,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:57,891 INFO L85 PathProgramCache]: Analyzing trace with hash -743639747, now seen corresponding path program 1 times [2022-11-25 22:25:57,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:57,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185855597] [2022-11-25 22:25:57,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:57,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:58,402 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:25:58,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:58,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185855597] [2022-11-25 22:25:58,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185855597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:58,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:25:58,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:25:58,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852916776] [2022-11-25 22:25:58,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:58,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 22:25:58,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:58,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 22:25:58,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:25:58,465 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) [2022-11-25 22:25:58,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:58,716 INFO L93 Difference]: Finished difference Result 602 states and 816 transitions. [2022-11-25 22:25:58,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 22:25:58,719 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 [2022-11-25 22:25:58,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:58,748 INFO L225 Difference]: With dead ends: 602 [2022-11-25 22:25:58,749 INFO L226 Difference]: Without dead ends: 377 [2022-11-25 22:25:58,758 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 [2022-11-25 22:25:58,761 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 [2022-11-25 22:25:58,762 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] [2022-11-25 22:25:58,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-25 22:25:58,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-11-25 22:25:58,857 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) [2022-11-25 22:25:58,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 513 transitions. [2022-11-25 22:25:58,866 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 513 transitions. Word has length 97 [2022-11-25 22:25:58,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:58,868 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 513 transitions. [2022-11-25 22:25:58,868 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) [2022-11-25 22:25:58,869 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 513 transitions. [2022-11-25 22:25:58,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 22:25:58,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:58,878 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] [2022-11-25 22:25:58,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:25:58,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:25:58,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:58,881 INFO L85 PathProgramCache]: Analyzing trace with hash -916928243, now seen corresponding path program 1 times [2022-11-25 22:25:58,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:58,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307859645] [2022-11-25 22:25:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:58,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:25:59,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:59,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307859645] [2022-11-25 22:25:59,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307859645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:59,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:25:59,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:25:59,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097833067] [2022-11-25 22:25:59,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:59,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:25:59,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:59,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:25:59,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:25:59,137 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) [2022-11-25 22:25:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:59,336 INFO L93 Difference]: Finished difference Result 598 states and 796 transitions. [2022-11-25 22:25:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:25:59,337 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 [2022-11-25 22:25:59,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:59,343 INFO L225 Difference]: With dead ends: 598 [2022-11-25 22:25:59,343 INFO L226 Difference]: Without dead ends: 379 [2022-11-25 22:25:59,349 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 [2022-11-25 22:25:59,351 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 [2022-11-25 22:25:59,352 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] [2022-11-25 22:25:59,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-11-25 22:25:59,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2022-11-25 22:25:59,387 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) [2022-11-25 22:25:59,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 515 transitions. [2022-11-25 22:25:59,396 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 515 transitions. Word has length 98 [2022-11-25 22:25:59,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:59,400 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 515 transitions. [2022-11-25 22:25:59,400 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) [2022-11-25 22:25:59,400 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 515 transitions. [2022-11-25 22:25:59,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-25 22:25:59,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:59,407 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] [2022-11-25 22:25:59,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 22:25:59,407 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:25:59,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:59,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1444660306, now seen corresponding path program 1 times [2022-11-25 22:25:59,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:59,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499092419] [2022-11-25 22:25:59,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:59,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:25:59,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:59,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499092419] [2022-11-25 22:25:59,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499092419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:59,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:25:59,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:25:59,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104237827] [2022-11-25 22:25:59,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:59,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:25:59,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:59,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:25:59,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:25:59,637 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) [2022-11-25 22:25:59,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:59,855 INFO L93 Difference]: Finished difference Result 757 states and 1044 transitions. [2022-11-25 22:25:59,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:25:59,855 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 [2022-11-25 22:25:59,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:59,859 INFO L225 Difference]: With dead ends: 757 [2022-11-25 22:25:59,859 INFO L226 Difference]: Without dead ends: 446 [2022-11-25 22:25:59,861 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 [2022-11-25 22:25:59,862 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 84 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:59,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 933 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:25:59,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-25 22:25:59,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 441. [2022-11-25 22:25:59,888 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) [2022-11-25 22:25:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 620 transitions. [2022-11-25 22:25:59,892 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 620 transitions. Word has length 103 [2022-11-25 22:25:59,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:59,892 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 620 transitions. [2022-11-25 22:25:59,893 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) [2022-11-25 22:25:59,893 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 620 transitions. [2022-11-25 22:25:59,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-25 22:25:59,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:59,895 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] [2022-11-25 22:25:59,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 22:25:59,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:25:59,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:59,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1092221239, now seen corresponding path program 1 times [2022-11-25 22:25:59,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:59,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880878987] [2022-11-25 22:25:59,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:59,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:26:00,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:00,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880878987] [2022-11-25 22:26:00,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880878987] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:26:00,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323874319] [2022-11-25 22:26:00,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:00,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:00,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:26:00,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:26:00,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:26:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:00,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:26:00,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-25 22:26:00,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:00,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323874319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:00,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:26:00,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-25 22:26:00,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062394881] [2022-11-25 22:26:00,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:00,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:00,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:00,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:00,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:26:00,701 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) [2022-11-25 22:26:00,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:00,849 INFO L93 Difference]: Finished difference Result 859 states and 1224 transitions. [2022-11-25 22:26:00,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:26:00,850 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 [2022-11-25 22:26:00,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:00,853 INFO L225 Difference]: With dead ends: 859 [2022-11-25 22:26:00,853 INFO L226 Difference]: Without dead ends: 439 [2022-11-25 22:26:00,855 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 [2022-11-25 22:26:00,855 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 [2022-11-25 22:26:00,856 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] [2022-11-25 22:26:00,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-11-25 22:26:00,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2022-11-25 22:26:00,881 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) [2022-11-25 22:26:00,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 608 transitions. [2022-11-25 22:26:00,884 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 608 transitions. Word has length 104 [2022-11-25 22:26:00,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:00,884 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 608 transitions. [2022-11-25 22:26:00,885 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) [2022-11-25 22:26:00,885 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 608 transitions. [2022-11-25 22:26:00,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-25 22:26:00,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:00,887 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] [2022-11-25 22:26:00,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:01,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:01,094 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:26:01,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:01,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1680970286, now seen corresponding path program 1 times [2022-11-25 22:26:01,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:01,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776046604] [2022-11-25 22:26:01,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:01,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:01,283 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:26:01,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:01,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776046604] [2022-11-25 22:26:01,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776046604] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:26:01,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628747413] [2022-11-25 22:26:01,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:01,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:01,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:26:01,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:26:01,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:26:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:01,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 1301 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:26:01,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:26:01,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:26:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:26:01,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628747413] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:26:01,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1360896222] [2022-11-25 22:26:01,879 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2022-11-25 22:26:01,879 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:26:01,883 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:26:01,890 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:26:01,890 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:26:16,750 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-11-25 22:26:17,142 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:26:26,247 WARN L233 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 463 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:26:33,403 WARN L233 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 471 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:27:13,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1360896222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:13,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:27:13,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 28 [2022-11-25 22:27:13,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569043324] [2022-11-25 22:27:13,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:13,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 22:27:13,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:27:13,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 22:27:13,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-11-25 22:27:13,748 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) [2022-11-25 22:27:22,765 WARN L233 SmtUtils]: Spent 8.74s 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) [2022-11-25 22:27:31,893 WARN L233 SmtUtils]: Spent 8.81s 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) [2022-11-25 22:27:41,138 WARN L233 SmtUtils]: Spent 8.83s 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) [2022-11-25 22:27:50,355 WARN L233 SmtUtils]: Spent 8.83s 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) [2022-11-25 22:27:59,606 WARN L233 SmtUtils]: Spent 8.86s 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) [2022-11-25 22:28:08,903 WARN L233 SmtUtils]: Spent 8.91s 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) [2022-11-25 22:28:18,221 WARN L233 SmtUtils]: Spent 8.92s 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) [2022-11-25 22:28:27,467 WARN L233 SmtUtils]: Spent 8.85s 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) [2022-11-25 22:28:40,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:28:40,787 INFO L93 Difference]: Finished difference Result 874 states and 1200 transitions. [2022-11-25 22:28:40,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-25 22:28:40,788 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 [2022-11-25 22:28:40,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:28:40,791 INFO L225 Difference]: With dead ends: 874 [2022-11-25 22:28:40,791 INFO L226 Difference]: Without dead ends: 467 [2022-11-25 22:28:40,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 137.3s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2022-11-25 22:28:40,797 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 94 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:28:40,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 2192 Invalid, 1132 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-25 22:28:40,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-11-25 22:28:40,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 459. [2022-11-25 22:28:40,906 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) [2022-11-25 22:28:40,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 624 transitions. [2022-11-25 22:28:40,910 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 624 transitions. Word has length 113 [2022-11-25 22:28:40,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:28:40,910 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 624 transitions. [2022-11-25 22:28:40,910 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) [2022-11-25 22:28:40,911 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 624 transitions. [2022-11-25 22:28:40,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-25 22:28:40,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:28:40,913 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] [2022-11-25 22:28:40,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 22:28:41,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:28:41,121 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:28:41,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:28:41,122 INFO L85 PathProgramCache]: Analyzing trace with hash 435700896, now seen corresponding path program 1 times [2022-11-25 22:28:41,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:28:41,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625249033] [2022-11-25 22:28:41,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:41,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:28:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:28:41,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:28:41,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625249033] [2022-11-25 22:28:41,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625249033] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:28:41,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378681785] [2022-11-25 22:28:41,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:41,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:28:41,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:28:41,295 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:28:41,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 22:28:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:41,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 1305 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:28:41,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:28:41,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:28:41,798 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:28:41,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378681785] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:28:41,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1453596479] [2022-11-25 22:28:41,803 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2022-11-25 22:28:41,803 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:28:41,804 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:28:41,804 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:28:41,805 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:28:53,973 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-11-25 22:28:54,290 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:29:03,319 WARN L233 SmtUtils]: Spent 7.03s on a formula simplification. DAG size of input: 463 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:29:10,576 WARN L233 SmtUtils]: Spent 7.19s on a formula simplification. DAG size of input: 471 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:29:53,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1453596479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:29:53,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:29:53,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2022-11-25 22:29:53,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652726861] [2022-11-25 22:29:53,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:29:53,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 22:29:53,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:29:53,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 22:29:53,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-11-25 22:29:53,899 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) [2022-11-25 22:30:03,189 WARN L233 SmtUtils]: Spent 9.02s 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) [2022-11-25 22:30:12,523 WARN L233 SmtUtils]: Spent 9.04s 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) [2022-11-25 22:30:22,032 WARN L233 SmtUtils]: Spent 9.14s 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) [2022-11-25 22:30:31,552 WARN L233 SmtUtils]: Spent 9.16s 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) [2022-11-25 22:30:41,171 WARN L233 SmtUtils]: Spent 9.24s 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) [2022-11-25 22:30:50,736 WARN L233 SmtUtils]: Spent 9.19s 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) [2022-11-25 22:31:00,330 WARN L233 SmtUtils]: Spent 9.21s 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) [2022-11-25 22:31:09,888 WARN L233 SmtUtils]: Spent 9.17s 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) [2022-11-25 22:31:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:15,254 INFO L93 Difference]: Finished difference Result 867 states and 1186 transitions. [2022-11-25 22:31:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-25 22:31:15,256 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 [2022-11-25 22:31:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:15,259 INFO L225 Difference]: With dead ends: 867 [2022-11-25 22:31:15,259 INFO L226 Difference]: Without dead ends: 451 [2022-11-25 22:31:15,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 134.1s TimeCoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 22:31:15,261 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 52 mSDsluCounter, 2478 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s 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, 6.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:15,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 2899 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-25 22:31:15,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-25 22:31:15,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2022-11-25 22:31:15,359 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) [2022-11-25 22:31:15,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 610 transitions. [2022-11-25 22:31:15,362 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 610 transitions. Word has length 117 [2022-11-25 22:31:15,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:15,362 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 610 transitions. [2022-11-25 22:31:15,363 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) [2022-11-25 22:31:15,363 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 610 transitions. [2022-11-25 22:31:15,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-25 22:31:15,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:15,365 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] [2022-11-25 22:31:15,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:15,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 22:31:15,571 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:15,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:15,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1711579497, now seen corresponding path program 1 times [2022-11-25 22:31:15,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:15,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332551829] [2022-11-25 22:31:15,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:15,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-25 22:31:15,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:15,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332551829] [2022-11-25 22:31:15,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332551829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:15,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:31:15,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:31:15,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266861039] [2022-11-25 22:31:15,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:15,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:31:15,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:15,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:31:15,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:31:15,721 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) [2022-11-25 22:31:15,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:15,967 INFO L93 Difference]: Finished difference Result 847 states and 1154 transitions. [2022-11-25 22:31:15,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:31:15,968 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 [2022-11-25 22:31:15,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:15,972 INFO L225 Difference]: With dead ends: 847 [2022-11-25 22:31:15,972 INFO L226 Difference]: Without dead ends: 448 [2022-11-25 22:31:15,974 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 [2022-11-25 22:31:15,975 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 [2022-11-25 22:31:15,975 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] [2022-11-25 22:31:15,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-25 22:31:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-11-25 22:31:16,084 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) [2022-11-25 22:31:16,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 586 transitions. [2022-11-25 22:31:16,088 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 586 transitions. Word has length 119 [2022-11-25 22:31:16,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:16,088 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 586 transitions. [2022-11-25 22:31:16,089 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) [2022-11-25 22:31:16,089 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 586 transitions. [2022-11-25 22:31:16,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-25 22:31:16,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:16,092 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] [2022-11-25 22:31:16,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 22:31:16,092 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:16,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:16,093 INFO L85 PathProgramCache]: Analyzing trace with hash -979485820, now seen corresponding path program 1 times [2022-11-25 22:31:16,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:16,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135215019] [2022-11-25 22:31:16,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:16,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:16,267 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:31:16,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:16,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135215019] [2022-11-25 22:31:16,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135215019] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:31:16,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103737159] [2022-11-25 22:31:16,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:16,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:16,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:16,271 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:16,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 22:31:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:16,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:31:16,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:16,835 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:31:16,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:31:16,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103737159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:16,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:31:16,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-25 22:31:16,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135063930] [2022-11-25 22:31:16,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:16,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:31:16,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:16,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:31:16,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:31:16,839 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) [2022-11-25 22:31:17,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:17,205 INFO L93 Difference]: Finished difference Result 1246 states and 1677 transitions. [2022-11-25 22:31:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:31:17,206 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 [2022-11-25 22:31:17,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:17,212 INFO L225 Difference]: With dead ends: 1246 [2022-11-25 22:31:17,212 INFO L226 Difference]: Without dead ends: 843 [2022-11-25 22:31:17,214 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 [2022-11-25 22:31:17,216 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 392 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:17,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 951 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:31:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-25 22:31:17,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2022-11-25 22:31:17,414 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) [2022-11-25 22:31:17,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1119 transitions. [2022-11-25 22:31:17,420 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1119 transitions. Word has length 131 [2022-11-25 22:31:17,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:17,422 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1119 transitions. [2022-11-25 22:31:17,423 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) [2022-11-25 22:31:17,423 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1119 transitions. [2022-11-25 22:31:17,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-25 22:31:17,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:17,428 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] [2022-11-25 22:31:17,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:17,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:17,647 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:17,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:17,647 INFO L85 PathProgramCache]: Analyzing trace with hash 263314312, now seen corresponding path program 1 times [2022-11-25 22:31:17,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:17,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685184444] [2022-11-25 22:31:17,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:17,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:31:17,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:17,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685184444] [2022-11-25 22:31:17,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685184444] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:31:17,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123991677] [2022-11-25 22:31:17,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:17,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:17,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:17,822 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:17,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 22:31:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:18,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:31:18,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:31:18,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:31:18,398 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:31:18,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123991677] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:31:18,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1888280096] [2022-11-25 22:31:18,412 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2022-11-25 22:31:18,412 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:31:18,413 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:31:18,414 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:31:18,414 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:31:30,267 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-11-25 22:31:30,608 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:31:39,988 WARN L233 SmtUtils]: Spent 7.21s on a formula simplification. DAG size of input: 463 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:31:47,501 WARN L233 SmtUtils]: Spent 7.43s on a formula simplification. DAG size of input: 471 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:32:39,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1888280096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:32:39,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:32:39,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [4, 4, 4] total 32 [2022-11-25 22:32:39,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934240327] [2022-11-25 22:32:39,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:32:39,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-25 22:32:39,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:32:39,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-25 22:32:39,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-11-25 22:32:39,386 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) [2022-11-25 22:32:48,804 WARN L233 SmtUtils]: Spent 9.18s 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) [2022-11-25 22:32:58,291 WARN L233 SmtUtils]: Spent 9.21s 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) [2022-11-25 22:33:07,960 WARN L233 SmtUtils]: Spent 9.29s 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) [2022-11-25 22:33:17,637 WARN L233 SmtUtils]: Spent 9.30s 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) [2022-11-25 22:33:27,157 WARN L233 SmtUtils]: Spent 9.15s 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) [2022-11-25 22:33:36,446 WARN L233 SmtUtils]: Spent 8.91s 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) [2022-11-25 22:33:45,754 WARN L233 SmtUtils]: Spent 8.93s 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) [2022-11-25 22:33:55,055 WARN L233 SmtUtils]: Spent 8.89s 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) [2022-11-25 22:33:59,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:33:59,116 INFO L93 Difference]: Finished difference Result 1635 states and 2185 transitions. [2022-11-25 22:33:59,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-25 22:33:59,117 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 [2022-11-25 22:33:59,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:33:59,123 INFO L225 Difference]: With dead ends: 1635 [2022-11-25 22:33:59,123 INFO L226 Difference]: Without dead ends: 840 [2022-11-25 22:33:59,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 143.0s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2022-11-25 22:33:59,130 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 60 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s 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, 5.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:33:59,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 2145 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-25 22:33:59,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-11-25 22:33:59,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 840. [2022-11-25 22:33:59,273 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) [2022-11-25 22:33:59,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1115 transitions. [2022-11-25 22:33:59,279 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1115 transitions. Word has length 132 [2022-11-25 22:33:59,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:33:59,280 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1115 transitions. [2022-11-25 22:33:59,280 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) [2022-11-25 22:33:59,280 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1115 transitions. [2022-11-25 22:33:59,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-25 22:33:59,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:33:59,284 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] [2022-11-25 22:33:59,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 22:33:59,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:33:59,493 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:33:59,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:33:59,493 INFO L85 PathProgramCache]: Analyzing trace with hash -420342915, now seen corresponding path program 1 times [2022-11-25 22:33:59,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:33:59,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906010160] [2022-11-25 22:33:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:33:59,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:33:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:33:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:33:59,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:33:59,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906010160] [2022-11-25 22:33:59,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906010160] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:33:59,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425338323] [2022-11-25 22:33:59,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:33:59,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:33:59,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:33:59,677 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:33:59,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c953e2fa-0432-4703-8a95-dd63bfd0978c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 22:34:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:00,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:34:00,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:34:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:34:00,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:34:00,210 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:34:00,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425338323] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:34:00,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [104073039] [2022-11-25 22:34:00,214 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2022-11-25 22:34:00,214 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:34:00,214 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:34:00,215 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:34:00,215 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:35:36,590 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 497 for LOIs [2022-11-25 22:35:37,758 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 503 for LOIs [2022-11-25 22:35:39,349 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-11-25 22:35:39,654 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 252 for LOIs [2022-11-25 22:35:40,393 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 441 for LOIs [2022-11-25 22:35:40,672 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 443 for LOIs [2022-11-25 22:35:40,982 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:35:49,834 WARN L233 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 463 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:35:56,958 WARN L233 SmtUtils]: Spent 7.05s on a formula simplification. DAG size of input: 471 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:36:53,028 WARN L233 SmtUtils]: Spent 6.53s on a formula simplification. DAG size of input: 516 DAG size of output: 508 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:36:59,857 WARN L233 SmtUtils]: Spent 6.63s on a formula simplification. DAG size of input: 520 DAG size of output: 512 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:37:28,613 WARN L233 SmtUtils]: Spent 13.16s 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) [2022-11-25 22:37:46,876 WARN L233 SmtUtils]: Spent 9.82s 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) [2022-11-25 22:37:57,941 WARN L233 SmtUtils]: Spent 10.16s 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) [2022-11-25 22:38:07,247 WARN L233 SmtUtils]: Spent 8.84s 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) [2022-11-25 22:38:27,528 WARN L233 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 516 DAG size of output: 342 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:36,021 WARN L233 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 560 DAG size of output: 396 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:43,998 WARN L233 SmtUtils]: Spent 7.42s on a formula simplification. DAG size of input: 560 DAG size of output: 396 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:50,017 WARN L233 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 562 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:56,001 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 560 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:39:03,517 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 551 DAG size of output: 391 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:39:03,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [104073039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:39:03,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:39:03,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [4, 4, 4] total 60 [2022-11-25 22:39:03,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389105228] [2022-11-25 22:39:03,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:39:03,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-25 22:39:03,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:39:03,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-25 22:39:03,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=3294, Unknown=0, NotChecked=0, Total=3540 [2022-11-25 22:39:03,529 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) [2022-11-25 22:39:12,845 WARN L233 SmtUtils]: Spent 8.76s 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)